Vulnerabilities > CVE-2018-15919 - Information Exposure vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
LOW Integrity impact
NONE Availability impact
NONE Summary
Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.'
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | Openbsd
| 59 |
Application | 4 | |
OS | 1 | |
Hardware | 1 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Subverting Environment Variable Values The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
- Footprinting An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
- Exploiting Trust in Client (aka Make the Client Invisible) An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
- Browser Fingerprinting An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
- Session Credential Falsification through Prediction This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
Nessus
NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-3686-1.NASL description This update for openssh fixes the following issues : CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or last seen 2020-06-01 modified 2020-06-02 plugin id 120162 published 2019-01-02 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/120162 title SUSE SLED15 / SLES15 Security Update : openssh (SUSE-SU-2018:3686-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from SUSE update advisory SUSE-SU-2018:3686-1. # The text itself is copyright (C) SUSE. # include("compat.inc"); if (description) { script_id(120162); script_version("1.4"); script_cvs_date("Date: 2019/09/10 13:51:49"); script_cve_id("CVE-2018-15473", "CVE-2018-15919"); script_name(english:"SUSE SLED15 / SLES15 Security Update : openssh (SUSE-SU-2018:3686-1)"); script_summary(english:"Checks rpm output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote SUSE host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "This update for openssh fixes the following issues : CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability. (bsc#1106163) CVE-2018-15473: OpenSSH was prone to a user existance oracle vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. (bsc#1105010) The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1081947" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1091396" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1105010" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1106163" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=964336" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-15473/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-15919/" ); # https://www.suse.com/support/update/announcement/2018/suse-su-20183686-1/ script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?3e302042" ); script_set_attribute( attribute:"solution", value: "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'. Alternatively you can run the command listed for your product : SUSE Linux Enterprise Module for Server Applications 15:zypper in -t patch SUSE-SLE-Module-Server-Applications-15-2018-2619=1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15:zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-2018-2619=1 SUSE Linux Enterprise Module for Desktop Applications 15:zypper in -t patch SUSE-SLE-Module-Desktop-Applications-15-2018-2619=1 SUSE Linux Enterprise Module for Basesystem 15:zypper in -t patch SUSE-SLE-Module-Basesystem-15-2018-2619=1" ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploit_framework_canvas", value:"true"); script_set_attribute(attribute:"canvas_package", value:'CANVAS'); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass-gnome"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass-gnome-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-cavs"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-cavs-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-fips"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-helpers"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-helpers-debuginfo"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/17"); script_set_attribute(attribute:"patch_publication_date", value:"2018/11/08"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/02"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE"); os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE"); os_ver = os_ver[1]; if (! preg(pattern:"^(SLED15|SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED15 / SLES15", "SUSE " + os_ver); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu); sp = get_kb_item("Host/SuSE/patchlevel"); if (isnull(sp)) sp = "0"; if (os_ver == "SLES15" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP0", os_ver + " SP" + sp); if (os_ver == "SLED15" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP0", os_ver + " SP" + sp); flag = 0; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-debuginfo-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-debugsource-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-fips-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-cavs-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-cavs-debuginfo-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-debuginfo-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-debugsource-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-askpass-gnome-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-askpass-gnome-debuginfo-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-debuginfo-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-debugsource-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-helpers-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLES15", sp:"0", reference:"openssh-helpers-debuginfo-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"openssh-cavs-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"openssh-cavs-debuginfo-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"openssh-debuginfo-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"openssh-debugsource-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"openssh-askpass-gnome-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"openssh-askpass-gnome-debuginfo-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"openssh-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"openssh-debuginfo-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"openssh-debugsource-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"openssh-helpers-7.6p1-9.3.1")) flag++; if (rpm_check(release:"SLED15", sp:"0", reference:"openssh-helpers-debuginfo-7.6p1-9.3.1")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh"); }
NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1316.NASL description According to the version of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states last seen 2020-05-06 modified 2020-03-23 plugin id 134807 published 2020-03-23 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/134807 title EulerOS 2.0 SP5 : openssh (EulerOS-SA-2020-1316) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(134807); script_version("1.3"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/04"); script_cve_id( "CVE-2018-15919" ); script_name(english:"EulerOS 2.0 SP5 : openssh (EulerOS-SA-2020-1316)"); script_summary(english:"Checks the rpm output for the updated package."); script_set_attribute(attribute:"synopsis", value: "The remote EulerOS host is missing a security update."); script_set_attribute(attribute:"description", value: "According to the version of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability.'(CVE-2018-15919) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues."); # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1316 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2c8d51cc"); script_set_attribute(attribute:"solution", value: "Update the affected openssh package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"patch_publication_date", value:"2020/03/23"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/23"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-askpass"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-clients"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-keycat"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-server"); script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Huawei Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp"); script_exclude_keys("Host/EulerOS/uvp_version"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/EulerOS/release"); if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS"); if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0"); sp = get_kb_item("Host/EulerOS/sp"); if (isnull(sp) || sp !~ "^(5)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5"); uvp = get_kb_item("Host/EulerOS/uvp_version"); if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5", "EulerOS UVP " + uvp); if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu); flag = 0; pkgs = ["openssh-7.4p1-16.h16.eulerosv2r7", "openssh-askpass-7.4p1-16.h16.eulerosv2r7", "openssh-clients-7.4p1-16.h16.eulerosv2r7", "openssh-keycat-7.4p1-16.h16.eulerosv2r7", "openssh-server-7.4p1-16.h16.eulerosv2r7"]; foreach (pkg in pkgs) if (rpm_check(release:"EulerOS-2.0", sp:"5", reference:pkg)) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh"); }
NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1521.NASL description According to the version of the openssh packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states last seen 2020-05-08 modified 2020-05-01 plugin id 136224 published 2020-05-01 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136224 title EulerOS Virtualization for ARM 64 3.0.2.0 : openssh (EulerOS-SA-2020-1521) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(136224); script_version("1.2"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/07"); script_cve_id( "CVE-2018-15919" ); script_name(english:"EulerOS Virtualization for ARM 64 3.0.2.0 : openssh (EulerOS-SA-2020-1521)"); script_summary(english:"Checks the rpm output for the updated package."); script_set_attribute(attribute:"synopsis", value: "The remote EulerOS Virtualization for ARM 64 host is missing a security update."); script_set_attribute(attribute:"description", value: "According to the version of the openssh packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability.'(CVE-2018-15919) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues."); # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1521 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5ecb56ea"); script_set_attribute(attribute:"solution", value: "Update the affected openssh package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"patch_publication_date", value:"2020/04/30"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/01"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-clients"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-keycat"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-server"); script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.2.0"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Huawei Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/EulerOS/release"); if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS"); uvp = get_kb_item("Host/EulerOS/uvp_version"); if (uvp != "3.0.2.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.2.0"); if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu); if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu); flag = 0; pkgs = ["openssh-7.4p1-16.h17", "openssh-clients-7.4p1-16.h17", "openssh-keycat-7.4p1-16.h17", "openssh-server-7.4p1-16.h17"]; foreach (pkg in pkgs) if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh"); }
NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1170.NASL description According to the version of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states last seen 2020-05-03 modified 2020-02-25 plugin id 134004 published 2020-02-25 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/134004 title EulerOS 2.0 SP8 : openssh (EulerOS-SA-2020-1170) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(134004); script_version("1.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/01"); script_cve_id( "CVE-2018-15919" ); script_name(english:"EulerOS 2.0 SP8 : openssh (EulerOS-SA-2020-1170)"); script_summary(english:"Checks the rpm output for the updated package."); script_set_attribute(attribute:"synopsis", value: "The remote EulerOS host is missing a security update."); script_set_attribute(attribute:"description", value: "According to the version of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability.'(CVE-2018-15919) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues."); # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1170 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?66f73191"); script_set_attribute(attribute:"solution", value: "Update the affected openssh package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"patch_publication_date", value:"2020/02/25"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/25"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-askpass"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-cavs"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-clients"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-keycat"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-ldap"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-server"); script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Huawei Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp"); script_exclude_keys("Host/EulerOS/uvp_version"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/EulerOS/release"); if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS"); if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0"); sp = get_kb_item("Host/EulerOS/sp"); if (isnull(sp) || sp !~ "^(8)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8"); uvp = get_kb_item("Host/EulerOS/uvp_version"); if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP8", "EulerOS UVP " + uvp); if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu); if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu); flag = 0; pkgs = ["openssh-7.8p1-3.h26.eulerosv2r8", "openssh-askpass-7.8p1-3.h26.eulerosv2r8", "openssh-cavs-7.8p1-3.h26.eulerosv2r8", "openssh-clients-7.8p1-3.h26.eulerosv2r8", "openssh-keycat-7.8p1-3.h26.eulerosv2r8", "openssh-ldap-7.8p1-3.h26.eulerosv2r8", "openssh-server-7.8p1-3.h26.eulerosv2r8"]; foreach (pkg in pkgs) if (rpm_check(release:"EulerOS-2.0", sp:"8", reference:pkg)) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh"); }
NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1360.NASL description According to the version of the openssh packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states last seen 2020-04-07 modified 2020-04-02 plugin id 135147 published 2020-04-02 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/135147 title EulerOS Virtualization for ARM 64 3.0.6.0 : openssh (EulerOS-SA-2020-1360) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(135147); script_version("1.2"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/06"); script_cve_id( "CVE-2018-15919" ); script_name(english:"EulerOS Virtualization for ARM 64 3.0.6.0 : openssh (EulerOS-SA-2020-1360)"); script_summary(english:"Checks the rpm output for the updated package."); script_set_attribute(attribute:"synopsis", value: "The remote EulerOS Virtualization for ARM 64 host is missing a security update."); script_set_attribute(attribute:"description", value: "According to the version of the openssh packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability.'(CVE-2018-15919) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues."); # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1360 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1b1c8522"); script_set_attribute(attribute:"solution", value: "Update the affected openssh package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"patch_publication_date", value:"2020/04/02"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/02"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-clients"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-keycat"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-server"); script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.6.0"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Huawei Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/EulerOS/release"); if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS"); uvp = get_kb_item("Host/EulerOS/uvp_version"); if (uvp != "3.0.6.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.6.0"); if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu); if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu); flag = 0; pkgs = ["openssh-7.8p1-3.h28.eulerosv2r8", "openssh-clients-7.8p1-3.h28.eulerosv2r8", "openssh-keycat-7.8p1-3.h28.eulerosv2r8", "openssh-server-7.8p1-3.h28.eulerosv2r8"]; foreach (pkg in pkgs) if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh"); }
NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-3781-1.NASL description This update for openssh fixes the following issues : Following security issues have been fixed : CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or last seen 2020-06-01 modified 2020-06-02 plugin id 119032 published 2018-11-19 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/119032 title SUSE SLES11 Security Update : openssh (SUSE-SU-2018:3781-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from SUSE update advisory SUSE-SU-2018:3781-1. # The text itself is copyright (C) SUSE. # include("compat.inc"); if (description) { script_id(119032); script_version("1.3"); script_cvs_date("Date: 2019/09/10 13:51:49"); script_cve_id("CVE-2018-15473", "CVE-2018-15919"); script_name(english:"SUSE SLES11 Security Update : openssh (SUSE-SU-2018:3781-1)"); script_summary(english:"Checks rpm output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote SUSE host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "This update for openssh fixes the following issues : Following security issues have been fixed : CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability. (bsc#1106163) CVE-2018-15473: OpenSSH was prone to a user existance oracle vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. (bsc#1105010) Also the following security related hardening change was done: Removed arcfour,blowfish,cast from list of default ciphers as they are long discontinued and should no longer be used. (bsc#982273) And The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1091396" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1105010" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1106163" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=964336" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=982273" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-15473/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-15919/" ); # https://www.suse.com/support/update/announcement/2018/suse-su-20183781-1/ script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?ee5de829" ); script_set_attribute( attribute:"solution", value: "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'. Alternatively you can run the command listed for your product : SUSE Linux Enterprise Server 11-SP4:zypper in -t patch slessp4-openssh-13867=1 SUSE Linux Enterprise Debuginfo 11-SP4:zypper in -t patch dbgsp4-openssh-13867=1" ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploit_framework_canvas", value:"true"); script_set_attribute(attribute:"canvas_package", value:'CANVAS'); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass-gnome"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-fips"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-helpers"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/17"); script_set_attribute(attribute:"patch_publication_date", value:"2018/11/16"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/19"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE"); os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE"); os_ver = os_ver[1]; if (! preg(pattern:"^(SLES11)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES11", "SUSE " + os_ver); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu); sp = get_kb_item("Host/SuSE/patchlevel"); if (isnull(sp)) sp = "0"; if (os_ver == "SLES11" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP4", os_ver + " SP" + sp); flag = 0; if (rpm_check(release:"SLES11", sp:"4", reference:"openssh-6.6p1-36.6.1")) flag++; if (rpm_check(release:"SLES11", sp:"4", reference:"openssh-askpass-gnome-6.6p1-36.6.1")) flag++; if (rpm_check(release:"SLES11", sp:"4", reference:"openssh-fips-6.6p1-36.6.1")) flag++; if (rpm_check(release:"SLES11", sp:"4", reference:"openssh-helpers-6.6p1-36.6.1")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh"); }
NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-3776-1.NASL description This update for openssh fixes the following issues : Following security issues have been fixed : CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or last seen 2020-06-01 modified 2020-06-02 plugin id 119031 published 2018-11-19 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/119031 title SUSE SLES12 Security Update : openssh (SUSE-SU-2018:3776-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from SUSE update advisory SUSE-SU-2018:3776-1. # The text itself is copyright (C) SUSE. # include("compat.inc"); if (description) { script_id(119031); script_version("1.3"); script_cvs_date("Date: 2019/09/10 13:51:49"); script_cve_id("CVE-2018-15473", "CVE-2018-15919"); script_name(english:"SUSE SLES12 Security Update : openssh (SUSE-SU-2018:3776-1)"); script_summary(english:"Checks rpm output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote SUSE host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "This update for openssh fixes the following issues : Following security issues have been fixed : CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability. (bsc#1106163) CVE-2018-15473: OpenSSH was prone to a user existance oracle vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. (bsc#1105010) Also the following security related hardening change was done: Remove arcfour,cast,blowfish from list of default ciphers. (bsc#982273) And The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1091396" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1105010" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1106163" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=964336" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=982273" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-15473/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-15919/" ); # https://www.suse.com/support/update/announcement/2018/suse-su-20183776-1/ script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?9c9c2d19" ); script_set_attribute( attribute:"solution", value: "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'. Alternatively you can run the command listed for your product : SUSE Linux Enterprise Server 12-SP1-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP1-2018-2698=1 SUSE Linux Enterprise Server 12-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-2018-2698=1" ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploit_framework_canvas", value:"true"); script_set_attribute(attribute:"canvas_package", value:'CANVAS'); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass-gnome"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass-gnome-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-fips"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-helpers"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-helpers-debuginfo"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/17"); script_set_attribute(attribute:"patch_publication_date", value:"2018/11/16"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/19"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE"); os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE"); os_ver = os_ver[1]; if (! preg(pattern:"^(SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES12", "SUSE " + os_ver); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu); sp = get_kb_item("Host/SuSE/patchlevel"); if (isnull(sp)) sp = "0"; if (os_ver == "SLES12" && (! preg(pattern:"^(0|1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP0/1", os_ver + " SP" + sp); flag = 0; if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-askpass-gnome-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-askpass-gnome-debuginfo-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-debuginfo-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-debugsource-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-fips-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-helpers-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-helpers-debuginfo-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-askpass-gnome-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-askpass-gnome-debuginfo-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-debuginfo-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-debugsource-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-fips-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-helpers-6.6p1-54.18.1")) flag++; if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-helpers-debuginfo-6.6p1-54.18.1")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh"); }
NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1419.NASL description According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states last seen 2020-05-06 modified 2020-04-15 plugin id 135548 published 2020-04-15 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/135548 title EulerOS 2.0 SP3 : openssh (EulerOS-SA-2020-1419) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(135548); script_version("1.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/04"); script_cve_id( "CVE-2018-15919", "CVE-2019-6109", "CVE-2019-6111" ); script_name(english:"EulerOS 2.0 SP3 : openssh (EulerOS-SA-2020-1419)"); script_summary(english:"Checks the rpm output for the updated packages."); script_set_attribute(attribute:"synopsis", value: "The remote EulerOS host is missing multiple security updates."); script_set_attribute(attribute:"description", value: "According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability.'(CVE-2018-15919) - An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.(CVE-2019-6109) - An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file).(CVE-2019-6111) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues."); # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-1419 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d693e492"); script_set_attribute(attribute:"solution", value: "Update the affected openssh packages."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"patch_publication_date", value:"2020/04/16"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/15"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-askpass"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-clients"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-keycat"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:openssh-server"); script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"Huawei Local Security Checks"); script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp"); script_exclude_keys("Host/EulerOS/uvp_version"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/EulerOS/release"); if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS"); if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0"); sp = get_kb_item("Host/EulerOS/sp"); if (isnull(sp) || sp !~ "^(3)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3"); uvp = get_kb_item("Host/EulerOS/uvp_version"); if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP3", "EulerOS UVP " + uvp); if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu); flag = 0; pkgs = ["openssh-6.6.1p1-28.h21", "openssh-askpass-6.6.1p1-28.h21", "openssh-clients-6.6.1p1-28.h21", "openssh-keycat-6.6.1p1-28.h21", "openssh-server-6.6.1p1-28.h21"]; foreach (pkg in pkgs) if (rpm_check(release:"EulerOS-2.0", sp:"3", reference:pkg)) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh"); }
NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-3540-1.NASL description This update for openssh fixes the following issues : Security issues fixed : CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or last seen 2020-06-01 modified 2020-06-02 plugin id 118498 published 2018-10-30 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118498 title SUSE SLES11 Security Update : openssh (SUSE-SU-2018:3540-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from SUSE update advisory SUSE-SU-2018:3540-1. # The text itself is copyright (C) SUSE. # include("compat.inc"); if (description) { script_id(118498); script_version("1.5"); script_cvs_date("Date: 2019/09/10 13:51:49"); script_cve_id("CVE-2016-10012", "CVE-2016-10708", "CVE-2017-15906", "CVE-2018-15473", "CVE-2018-15919"); script_name(english:"SUSE SLES11 Security Update : openssh (SUSE-SU-2018:3540-1)"); script_summary(english:"Checks rpm output for the updated packages."); script_set_attribute( attribute:"synopsis", value:"The remote SUSE host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "This update for openssh fixes the following issues : Security issues fixed : CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability. (bsc#1106163) CVE-2017-15906: The process_open function in sftp-server.c in OpenSSH did not properly prevent write operations in readonly mode, which allowed attackers to create zero-length files. (bsc#1065000, bsc#1106726) CVE-2016-10708: sshd allowed remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence NEWKEYS message, as demonstrated by Honggfuzz, related to kex.c and packet.c. (bsc#1076957) CVE-2018-15473: OpenSSH was prone to a user existance oracle vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. (bsc#1105010) CVE-2016-10012: Removed pre-auth compression support from the server to prevent possible cryptographic attacks. (bsc#1016370) Bugs fixed: Fixed failing 'AuthorizedKeysCommand' within a 'Match User' block in sshd_config (bsc#1105180) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1016370" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1065000" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1076957" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1105010" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1105180" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1106163" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1106726" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2016-10012/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2016-10708/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2017-15906/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-15473/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-15919/" ); # https://www.suse.com/support/update/announcement/2018/suse-su-20183540-1/ script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?bf4c0b95" ); script_set_attribute( attribute:"solution", value: "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'. Alternatively you can run the command listed for your product : SUSE Linux Enterprise Server 11-SP3-LTSS:zypper in -t patch slessp3-openssh-13848=1 SUSE Linux Enterprise Point of Sale 11-SP3:zypper in -t patch sleposp3-openssh-13848=1 SUSE Linux Enterprise Debuginfo 11-SP3:zypper in -t patch dbgsp3-openssh-13848=1" ); script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploit_framework_canvas", value:"true"); script_set_attribute(attribute:"canvas_package", value:'CANVAS'); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass-gnome"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11"); script_set_attribute(attribute:"vuln_publication_date", value:"2017/01/05"); script_set_attribute(attribute:"patch_publication_date", value:"2018/10/28"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/10/30"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE"); os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE"); os_ver = os_ver[1]; if (! preg(pattern:"^(SLES11)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES11", "SUSE " + os_ver); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu); sp = get_kb_item("Host/SuSE/patchlevel"); if (isnull(sp)) sp = "0"; if (os_ver == "SLES11" && (! preg(pattern:"^(3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP3", os_ver + " SP" + sp); flag = 0; if (rpm_check(release:"SLES11", sp:"3", reference:"openssh-6.2p2-0.41.5.1")) flag++; if (rpm_check(release:"SLES11", sp:"3", reference:"openssh-askpass-6.2p2-0.41.5.1")) flag++; if (rpm_check(release:"SLES11", sp:"3", reference:"openssh-askpass-gnome-6.2p2-0.41.5.1")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get()); else security_hole(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh"); }
NASL family SuSE Local Security Checks NASL id OPENSUSE-2018-1419.NASL description This update for openssh fixes the following issues : - CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or last seen 2020-06-05 modified 2018-11-19 plugin id 119024 published 2018-11-19 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/119024 title openSUSE Security Update : openssh (openSUSE-2018-1419) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update openSUSE-2018-1419. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(119024); script_version("1.3"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04"); script_cve_id("CVE-2018-15473", "CVE-2018-15919"); script_name(english:"openSUSE Security Update : openssh (openSUSE-2018-1419)"); script_summary(english:"Check for the openSUSE-2018-1419 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value: "This update for openssh fixes the following issues : - CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability. (bsc#1106163) - CVE-2018-15473: OpenSSH was prone to a user existance oracle vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. (bsc#1105010) The following non-security issues were fixed : - Stop leaking File descriptors (bsc#964336) - sftp-client.c returns wrong error code upon failure (bsc#1091396) - added pam_keyinit to pam configuration file (bsc#1081947) This update was imported from the SUSE:SLE-15:Update update project." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1081947" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1091396" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1105010" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1106163" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=964336" ); script_set_attribute( attribute:"solution", value:"Update the affected openssh packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploit_framework_canvas", value:"true"); script_set_attribute(attribute:"canvas_package", value:'CANVAS'); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-askpass-gnome"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-askpass-gnome-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-cavs"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-cavs-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-fips"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-helpers"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-helpers-debuginfo"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.0"); script_set_attribute(attribute:"patch_publication_date", value:"2018/11/16"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/19"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE"); if (release !~ "^(SUSE15\.0)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.0", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE15.0", reference:"openssh-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-cavs-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-cavs-debuginfo-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-debuginfo-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-debugsource-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-fips-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-helpers-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-helpers-debuginfo-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"openssh-askpass-gnome-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"openssh-askpass-gnome-debuginfo-7.6p1-lp150.8.3.1") ) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh-askpass-gnome / openssh-askpass-gnome-debuginfo / openssh / etc"); }
NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-914.NASL description This update for openssh fixes the following issues : - CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or last seen 2020-06-01 modified 2020-06-02 plugin id 123374 published 2019-03-27 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/123374 title openSUSE Security Update : openssh (openSUSE-2019-914) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update openSUSE-2019-914. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(123374); script_version("1.3"); script_cvs_date("Date: 2019/04/04 11:19:02"); script_cve_id("CVE-2018-15473", "CVE-2018-15919"); script_name(english:"openSUSE Security Update : openssh (openSUSE-2019-914)"); script_summary(english:"Check for the openSUSE-2019-914 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value: "This update for openssh fixes the following issues : - CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or 'oracle') as a vulnerability. (bsc#1106163) - CVE-2018-15473: OpenSSH was prone to a user existance oracle vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. (bsc#1105010) The following non-security issues were fixed : - Stop leaking File descriptors (bsc#964336) - sftp-client.c returns wrong error code upon failure (bsc#1091396) - added pam_keyinit to pam configuration file (bsc#1081947) This update was imported from the SUSE:SLE-15:Update update project." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1081947" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1091396" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1105010" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1106163" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=964336" ); script_set_attribute( attribute:"solution", value:"Update the affected openssh packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploit_framework_canvas", value:"true"); script_set_attribute(attribute:"canvas_package", value:'CANVAS'); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-askpass-gnome"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-askpass-gnome-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-cavs"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-cavs-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-fips"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-helpers"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-helpers-debuginfo"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.0"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/17"); script_set_attribute(attribute:"patch_publication_date", value:"2019/03/23"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/27"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE"); if (release !~ "^(SUSE15\.0)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.0", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE15.0", reference:"openssh-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-cavs-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-cavs-debuginfo-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-debuginfo-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-debugsource-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-fips-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-helpers-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", reference:"openssh-helpers-debuginfo-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"openssh-askpass-gnome-7.6p1-lp150.8.3.1") ) flag++; if ( rpm_check(release:"SUSE15.0", cpu:"x86_64", reference:"openssh-askpass-gnome-debuginfo-7.6p1-lp150.8.3.1") ) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openssh-askpass-gnome / openssh-askpass-gnome-debuginfo / openssh / etc"); }