Vulnerabilities > CVE-2019-6111 - Path Traversal vulnerability in multiple products
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
NONE Integrity impact
HIGH Availability impact
NONE Summary
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).
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Relative Path Traversal An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
- Directory Traversal An attacker with access to file system resources, either directly or via application logic, will use various file path specification or navigation mechanisms such as ".." in path strings and absolute paths to extend their range of access to inappropriate areas of the file system. The attacker attempts to either explore the file system for recon purposes or access directories and files that are intended to be restricted from their access. Exploring the file system can be achieved through constructing paths presented to directory listing programs, such as "ls" and 'dir', or through specially crafted programs that attempt to explore the file system. The attacker engaging in this type of activity is searching for information that can be used later in a more exploitive attack. Access to restricted directories or files can be achieved through modification of path references utilized by system applications.
- File System Function Injection, Content Based An attack of this type exploits the host's trust in executing remote content including binary files. The files are poisoned with a malicious payload (targeting the file systems accessible by the target software) by the attacker and may be passed through standard channels such as via email, and standard web content like PDF and multimedia files. The attacker exploits known vulnerabilities or handling routines in the target processes. Vulnerabilities of this type have been found in a wide variety of commercial applications from Microsoft Office to Adobe Acrobat and Apple Safari web browser. When the attacker knows the standard handling routines and can identify vulnerabilities and entry points they can be exploited by otherwise seemingly normal content. Once the attack is executed, the attackers' program can access relative directories such as C:\Program Files or other standard system directories to launch further attacks. In a worst case scenario, these programs are combined with other propagation logic and work as a virus.
- Using Slashes and URL Encoding Combined to Bypass Validation Logic This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL. An URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
- Manipulating Input to File System Calls An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
Exploit-Db
id EDB-ID:46516 last seen 2019-03-07 modified 2019-01-11 published 2019-01-11 reporter Exploit-DB source https://www.exploit-db.com/download/46516 title OpenSSH SCP Client - Write Arbitrary Files file exploits/multiple/remote/46193.py id EDB-ID:46193 last seen 2019-01-18 modified 2019-01-18 platform multiple port published 2019-01-18 reporter Exploit-DB source https://www.exploit-db.com/download/46193 title SCP Client - Multiple Vulnerabilities (SSHtranger Things) type remote
Nessus
NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-0132-1.NASL description This update for openssh fixes the following issues : Security issue fixed : CVE-2018-20685: Fixed an issue where scp client allows remote SSH servers to bypass intended access restrictions (bsc#1121571) CVE-2019-6109: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate terminal output via the object name, e.g. by inserting ANSI escape sequences (bsc#1121816) CVE-2019-6110: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate stderr output, e.g. by inserting ANSI escape sequences (bsc#1121818) CVE-2019-6111: Fixed an issue where the scp client would allow malicious remote SSH servers to execute directory traversal attacks and overwrite files (bsc#1121821) 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. last seen 2020-03-18 modified 2019-01-22 plugin id 121300 published 2019-01-22 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121300 title SUSE SLED12 / SLES12 Security Update : openssh (SUSE-SU-2019:0132-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from SUSE update advisory SUSE-SU-2019:0132-1. # The text itself is copyright (C) SUSE. # include("compat.inc"); if (description) { script_id(121300); script_version("1.7"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/24"); script_cve_id("CVE-2018-20685", "CVE-2019-6109", "CVE-2019-6110", "CVE-2019-6111"); script_name(english:"SUSE SLED12 / SLES12 Security Update : openssh (SUSE-SU-2019:0132-1)"); 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 issue fixed : CVE-2018-20685: Fixed an issue where scp client allows remote SSH servers to bypass intended access restrictions (bsc#1121571) CVE-2019-6109: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate terminal output via the object name, e.g. by inserting ANSI escape sequences (bsc#1121816) CVE-2019-6110: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate stderr output, e.g. by inserting ANSI escape sequences (bsc#1121818) CVE-2019-6111: Fixed an issue where the scp client would allow malicious remote SSH servers to execute directory traversal attacks and overwrite files (bsc#1121821) 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=1121571" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1121816" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1121818" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1121821" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2018-20685/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-6109/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-6110/" ); script_set_attribute( attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-6111/" ); # https://www.suse.com/support/update/announcement/2019/suse-su-20190132-1/ script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?2f3bb078" ); 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 OpenStack Cloud 7:zypper in -t patch SUSE-OpenStack-Cloud-7-2019-132=1 SUSE Linux Enterprise Server for SAP 12-SP2:zypper in -t patch SUSE-SLE-SAP-12-SP2-2019-132=1 SUSE Linux Enterprise Server 12-SP4:zypper in -t patch SUSE-SLE-SERVER-12-SP4-2019-132=1 SUSE Linux Enterprise Server 12-SP3:zypper in -t patch SUSE-SLE-SERVER-12-SP3-2019-132=1 SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2019-132=1 SUSE Linux Enterprise Server 12-SP2-BCL:zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2019-132=1 SUSE Linux Enterprise Desktop 12-SP4:zypper in -t patch SUSE-SLE-DESKTOP-12-SP4-2019-132=1 SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch SUSE-SLE-DESKTOP-12-SP3-2019-132=1 SUSE Enterprise Storage 4:zypper in -t patch SUSE-Storage-4-2019-132=1 SUSE CaaS Platform ALL : To install this update, use the SUSE CaaS Platform Velum dashboard. It will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way. SUSE CaaS Platform 3.0 : To install this update, use the SUSE CaaS Platform Velum dashboard. It will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way. OpenStack Cloud Magnum Orchestration 7:zypper in -t patch SUSE-OpenStack-Cloud-Magnum-Orchestration-7-2019-132=1" ); 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:"cvss_score_source", value:"CVE-2019-6111"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); 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:"2019/01/10"); script_set_attribute(attribute:"patch_publication_date", value:"2019/01/21"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/22"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 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/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:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if (cpu !~ "^i[3-6]86$" && "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:"^(2|3|4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2/3/4", os_ver + " SP" + sp); if (os_ver == "SLED12" && (! preg(pattern:"^(3|4)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP3/4", os_ver + " SP" + sp); flag = 0; if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-askpass-gnome-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-askpass-gnome-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-debugsource-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-fips-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-helpers-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"4", reference:"openssh-helpers-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-askpass-gnome-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-askpass-gnome-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-debugsource-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-fips-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-helpers-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"3", reference:"openssh-helpers-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"openssh-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"openssh-askpass-gnome-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"openssh-askpass-gnome-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"openssh-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"openssh-debugsource-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"openssh-fips-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"openssh-helpers-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"openssh-helpers-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-askpass-gnome-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-askpass-gnome-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-debugsource-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-fips-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-helpers-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLES12", sp:"2", reference:"openssh-helpers-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-askpass-gnome-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-askpass-gnome-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-debugsource-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-helpers-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"4", cpu:"x86_64", reference:"openssh-helpers-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-askpass-gnome-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-askpass-gnome-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-debuginfo-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-debugsource-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-helpers-7.2p2-74.35.1")) flag++; if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"openssh-helpers-debuginfo-7.2p2-74.35.1")) 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-2019-1324.NASL description According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - 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. last seen 2020-06-01 modified 2020-06-02 plugin id 124610 published 2019-05-06 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124610 title EulerOS 2.0 SP5 : openssh (EulerOS-SA-2019-1324) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1355.NASL description According to the versions of the openssh packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - 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. last seen 2020-06-01 modified 2020-06-02 plugin id 124733 published 2019-05-10 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124733 title EulerOS Virtualization 2.5.3 : openssh (EulerOS-SA-2019-1355) NASL family Fedora Local Security Checks NASL id FEDORA_2019-0F4190CDB0.NASL description New upstream release with significantly reworked PKCS#11 support, GSSAPI key exchange and several fixes for CVE-2019-6111 and CVE-2019-6109 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 124599 published 2019-05-06 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124599 title Fedora 30 : openssh (2019-0f4190cdb0) NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-0125-1.NASL description This update for openssh fixes the following issues : Security issue fixed : CVE-2018-20685: Fixed an issue where scp client allows remote SSH servers to bypass intended access restrictions (bsc#1121571) CVE-2019-6109: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate terminal output via the object name, e.g. by inserting ANSI escape sequences (bsc#1121816) CVE-2019-6110: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate stderr output, e.g. by inserting ANSI escape sequences (bsc#1121818) CVE-2019-6111: Fixed an issue where the scp client would allow malicious remote SSH servers to execute directory traversal attacks and overwrite files (bsc#1121821) 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. last seen 2020-03-18 modified 2019-01-22 plugin id 121295 published 2019-01-22 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121295 title SUSE SLES12 Security Update : openssh (SUSE-SU-2019:0125-1) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2019-3702.NASL description An update for openssh is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. The following packages have been upgraded to a later upstream version: openssh (8.0p1). (BZ#1691045) Security Fix(es) : * openssh: scp client improper directory name validation (CVE-2018-20685) * openssh: Improper validation of object names allows malicious server to overwrite files via scp client (CVE-2019-6111) * openssh: Missing character encoding in progress display allows for spoofing of scp client output (CVE-2019-6109) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.1 Release Notes linked from the References section. last seen 2020-06-01 modified 2020-06-02 plugin id 130569 published 2019-11-06 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130569 title RHEL 8 : openssh (RHSA-2019:3702) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3885-1.NASL description Harry Sintonen discovered multiple issues in the OpenSSH scp utility. If a user or automated system were tricked into connecting to an untrusted server, a remote attacker could possibly use these issues to write to arbitrary files, change directory permissions, and spoof client output. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 122055 published 2019-02-08 reporter Ubuntu Security Notice (C) 2019-2020 Canonical, Inc. / NASL script (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/122055 title Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : openssh vulnerabilities (USN-3885-1) NASL family Amazon Linux Local Security Checks NASL id AL2_ALAS-2019-1216.NASL description An issue was discovered in OpenSSH. 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) In OpenSSH, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.(CVE-2018-20685) An issue was discovered in OpenSSH. 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 ) last seen 2020-06-01 modified 2020-06-02 plugin id 125599 published 2019-05-31 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/125599 title Amazon Linux 2 : openssh (ALAS-2019-1216) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1630.NASL description According to the versions of the openssh packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - 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. last seen 2020-06-01 modified 2020-06-02 plugin id 125582 published 2019-05-30 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/125582 title EulerOS Virtualization for ARM 64 3.0.2.0 : openssh (EulerOS-SA-2019-1630) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1426.NASL description According to the versions of the openssh packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.(CVE-2017-15906) - In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.(CVE-2018-20685) - 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) - OpenSSH through 7.7 is prone to a user enumeration 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.(CVE-2018-15473) 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. last seen 2020-06-01 modified 2020-06-02 plugin id 124929 published 2019-05-14 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124929 title EulerOS Virtualization 3.0.1.0 : openssh (EulerOS-SA-2019-1426) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3885-2.NASL description USN-3885-1 fixed vulnerabilities in OpenSSH. It was discovered that the fix for CVE-2019-6111 turned out to be incomplete. This update fixes the problem. Original advisory details : Harry Sintonen discovered multiple issues in the OpenSSH scp utility. If a user or automated system were tricked into connecting to an untrusted server, a remote attacker could possibly use these issues to write to arbitrary files, change directory permissions, and spoof client output. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 122610 published 2019-03-05 reporter Ubuntu Security Notice (C) 2019 Canonical, Inc. / NASL script (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/122610 title Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : openssh vulnerability (USN-3885-2) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1728.NASL description Multiple scp client vulnerabilities have been discovered in OpenSSH, the premier connectivity tool for secure remote shell login and secure file transfer. CVE-2018-20685 In scp.c, the scp client allowed remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact was modifying the permissions of the target directory on the client side. CVE-2019-6109 Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) was able to employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affected refresh_progress_meter() in progressmeter.c. CVE-2019-6111 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 performed cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) was able to overwrite arbitrary files in the scp client target directory. If recursive operation (-r) was performed, the server was able to manipulate subdirectories, as well (for example, to overwrite the .ssh/authorized_keys file). For Debian 8 last seen 2020-06-01 modified 2020-06-02 plugin id 123095 published 2019-03-26 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/123095 title Debian DLA-1728-1 : openssh security update NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-91.NASL description This update for openssh fixes the following issues : Security issues fixed : - CVE-2018-20685: Fixed an issue where scp client allows remote SSH servers to bypass intended access restrictions (bsc#1121571) - CVE-2019-6109: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate terminal output via the object name, e.g. by inserting ANSI escape sequences (bsc#1121816) - CVE-2019-6110: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate stderr output, e.g. by inserting ANSI escape sequences (bsc#1121818) - CVE-2019-6111: Fixed an issue where the scp client would allow malicious remote SSH servers to execute directory traversal attacks and overwrite files (bsc#1121821) This update was imported from the SUSE:SLE-15:Update update project. last seen 2020-03-18 modified 2019-01-29 plugin id 121430 published 2019-01-29 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121430 title openSUSE Security Update : openssh (openSUSE-2019-91) NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-13931-1.NASL description This update for openssh fixes the following issues : Security issue fixed : CVE-2018-20685: Fixed an issue where scp client allows remote SSH servers to bypass intended access restrictions (bsc#1121571) CVE-2019-6109: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate terminal output via the object name, e.g. by inserting ANSI escape sequences (bsc#1121816) CVE-2019-6110: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate stderr output, e.g. by inserting ANSI escape sequences (bsc#1121818) CVE-2019-6111: Fixed an issue where the scp client would allow malicious remote SSH servers to execute directory traversal attacks and overwrite files (bsc#1121821) 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. last seen 2020-03-18 modified 2019-01-22 plugin id 121306 published 2019-01-22 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121306 title SUSE SLES11 Security Update : openssh (SUSE-SU-2019:13931-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-93.NASL description This update for openssh fixes the following issues : Security issue fixed : - CVE-2018-20685: Fixed an issue where scp client allows remote SSH servers to bypass intended access restrictions (bsc#1121571) - CVE-2019-6109: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate terminal output via the object name, e.g. by inserting ANSI escape sequences (bsc#1121816) - CVE-2019-6110: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate stderr output, e.g. by inserting ANSI escape sequences (bsc#1121818) - CVE-2019-6111: Fixed an issue where the scp client would allow malicious remote SSH servers to execute directory traversal attacks and overwrite files (bsc#1121821) This update was imported from the SUSE:SLE-12-SP2:Update update project. last seen 2020-03-18 modified 2019-01-30 plugin id 121460 published 2019-01-30 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121460 title openSUSE Security Update : openssh (openSUSE-2019-93) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-2113.NASL description According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - 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. last seen 2020-05-03 modified 2019-11-12 plugin id 130822 published 2019-11-12 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130822 title EulerOS 2.0 SP8 : openssh (EulerOS-SA-2019-2113) NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-14030-1.NASL description This update for openssh fixes the following issues : Security vulnerabilities addressed : CVE-2019-6109: Fixed an character encoding issue in the progress display of the scp client that could be used to manipulate client output, allowing for spoofing during file transfers (bsc#1121816). CVE-2019-6111: Properly validate object names received by the scp client to prevent arbitrary file overwrites when interacting with a malicious SSH server (bsc#1121821). Other issues fixed: Fixed two race conditions in sshd relating to SIGHUP (bsc#1119183). Returned proper reason for port forwarding failures (bsc#1090671). Fixed SSHD termination of multichannel sessions with non-root users (bsc#1115550). 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. last seen 2020-06-01 modified 2020-06-02 plugin id 124321 published 2019-04-26 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124321 title SUSE SLES11 Security Update : openssh (SUSE-SU-2019:14030-1) NASL family NewStart CGSL Local Security Checks NASL id NEWSTART_CGSL_NS-SA-2019-0060_OPENSSH.NASL description The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has openssh packages installed that are affected by multiple vulnerabilities: - In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side. (CVE-2018-20685) - 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) - In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred. (CVE-2019-6110) - 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 Nessus has not tested for this issue but has instead relied only on the application last seen 2020-06-01 modified 2020-06-02 plugin id 127253 published 2019-08-12 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/127253 title NewStart CGSL CORE 5.04 / MAIN 5.04 : openssh Multiple Vulnerabilities (NS-SA-2019-0060) NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-307.NASL description This update for openssh fixes the following issues : Security vulnerabilities addressed : - CVE-2019-6109: Fixed an character encoding issue in the progress display of the scp client that could be used to manipulate client output, allowing for spoofing during file transfers (bsc#1121816) - CVE-2019-6111: Properly validate object names received by the scp client to prevent arbitrary file overwrites when interacting with a malicious SSH server (bsc#1121821) Other bug fixes and changes : - Handle brace expansion in scp when checking that filenames sent by the server side match what the client requested (bsc#1125687) This update was imported from the SUSE:SLE-15:Update update project. last seen 2020-06-01 modified 2020-06-02 plugin id 122743 published 2019-03-11 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/122743 title openSUSE Security Update : openssh (openSUSE-2019-307) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4387.NASL description Harry Sintonen from F-Secure Corporation discovered multiple vulnerabilities in OpenSSH, an implementation of the SSH protocol suite. All the vulnerabilities are in found in the scp client implementing the SCP protocol. - CVE-2018-20685 Due to improper directory name validation, the scp client allows servers to modify permissions of the target directory by using empty or dot directory name. - CVE-2019-6109 Due to missing character encoding in the progress display, the object name can be used to manipulate the client output, for example to employ ANSI codes to hide additional files being transferred. - CVE-2019-6111 Due to scp client insufficient input validation in path names sent by server, a malicious server can do arbitrary file overwrites in target directory. If the recursive (-r) option is provided, the server can also manipulate subdirectories as well. The check added in this version can lead to regression if the client and the server have differences in wildcard expansion rules. If the server is trusted for that purpose, the check can be disabled with a new -T option to the scp client. last seen 2020-06-01 modified 2020-06-02 plugin id 122068 published 2019-02-11 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/122068 title Debian DSA-4387-1 : openssh - security update NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-0941-1.NASL description This update for openssh fixes the following issues : Security vulnerabilities addressed : CVE-2019-6109: Fixed an character encoding issue in the progress display of the scp client that could be used to manipulate client output, allowing for spoofing during file transfers (bsc#1121816). CVE-2019-6111: Properly validate object names received by the scp client to prevent arbitrary file overwrites when interacting with a malicious SSH server (bsc#1121821). Other issues fixed: Fixed two race conditions in sshd relating to SIGHUP (bsc#1119183). Returned proper reason for port forwarding failures (bsc#1090671). Fixed SSHD termination of multichannel sessions with non-root users (bsc#1115550). 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. last seen 2020-06-01 modified 2020-06-02 plugin id 124057 published 2019-04-15 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/124057 title SUSE SLES12 Security Update : openssh (SUSE-SU-2019:0941-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-1602.NASL description This update for openssh fixes the following issues : Security vulnerabilities addressed : - CVE-2019-6109: Fixed an character encoding issue in the progress display of the scp client that could be used to manipulate client output, allowing for spoofing during file transfers (bsc#1121816). - CVE-2019-6111: Properly validate object names received by the scp client to prevent arbitrary file overwrites when interacting with a malicious SSH server (bsc#1121821). Other issues fixed : - Fixed two race conditions in sshd relating to SIGHUP (bsc#1119183). - Returned proper reason for port forwarding failures (bsc#1090671). - Fixed a double free() in the KDF CAVS testing tool (bsc#1065237). This update was imported from the SUSE:SLE-12-SP2:Update update project. last seen 2020-06-01 modified 2020-06-02 plugin id 126227 published 2019-06-25 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/126227 title openSUSE Security Update : openssh (openSUSE-2019-1602) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-1908.NASL description According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - 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. last seen 2020-05-08 modified 2019-09-16 plugin id 128831 published 2019-09-16 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/128831 title EulerOS 2.0 SP5 : openssh (EulerOS-SA-2019-1908) 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) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2019-1313.NASL description 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) In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side. (CVE-2018-20685) last seen 2020-06-01 modified 2020-06-02 plugin id 130403 published 2019-10-31 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130403 title Amazon Linux AMI : openssh (ALAS-2019-1313) NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-0126-1.NASL description This update for openssh fixes the following issues : Security issues fixed : CVE-2018-20685: Fixed an issue where scp client allows remote SSH servers to bypass intended access restrictions (bsc#1121571) CVE-2019-6109: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate terminal output via the object name, e.g. by inserting ANSI escape sequences (bsc#1121816) CVE-2019-6110: Fixed an issue where the scp client would allow malicious remote SSH servers to manipulate stderr output, e.g. by inserting ANSI escape sequences (bsc#1121818) CVE-2019-6111: Fixed an issue where the scp client would allow malicious remote SSH servers to execute directory traversal attacks and overwrite files (bsc#1121821) 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. last seen 2020-03-18 modified 2019-01-22 plugin id 121296 published 2019-01-22 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121296 title SUSE SLED15 / SLES15 Security Update : openssh (SUSE-SU-2019:0126-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-0496-1.NASL description This update for openssh fixes the following issues : Security vulnerabilities addressed : CVE-2019-6109: Fixed an character encoding issue in the progress display of the scp client that could be used to manipulate client output, allowing for spoofing during file transfers (bsc#1121816) CVE-2019-6111: Properly validate object names received by the scp client to prevent arbitrary file overwrites when interacting with a malicious SSH server (bsc#1121821) Other bug fixes and changes: Handle brace expansion in scp when checking that filenames sent by the server side match what the client requested (bsc#1125687) 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. last seen 2020-06-01 modified 2020-06-02 plugin id 122473 published 2019-02-27 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/122473 title SUSE SLED15 / SLES15 Security Update : openssh (SUSE-SU-2019:0496-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-1524-1.NASL description This update for openssh fixes the following issues : Security vulnerabilities addressed : CVE-2019-6109: Fixed an character encoding issue in the progress display of the scp client that could be used to manipulate client output, allowing for spoofing during file transfers (bsc#1121816). CVE-2019-6111: Properly validate object names received by the scp client to prevent arbitrary file overwrites when interacting with a malicious SSH server (bsc#1121821). Other issues fixed: Fixed two race conditions in sshd relating to SIGHUP (bsc#1119183). Returned proper reason for port forwarding failures (bsc#1090671). Fixed a double free() in the KDF CAVS testing tool (bsc#1065237). 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. last seen 2020-06-01 modified 2020-06-02 plugin id 125988 published 2019-06-18 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/125988 title SUSE SLED12 / SLES12 Security Update : openssh (SUSE-SU-2019:1524-1) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201903-16.NASL description The remote host is affected by the vulnerability described in GLSA-201903-16 (OpenSSH: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in OpenSSH. Please review the CVE identifiers referenced below for details. Impact : A remote attacker could overwrite arbitrary files, transfer malicious files, or gain unauthorized access. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 122990 published 2019-03-21 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/122990 title GLSA-201903-16 : OpenSSH: Multiple vulnerabilities
Packetstorm
| data source | https://packetstormsecurity.com/files/download/151227/sshtrangerthings-fileadd.txt |
| id | PACKETSTORM:151227 |
| last seen | 2019-01-19 |
| published | 2019-01-18 |
| reporter | Mark E. Haase |
| source | https://packetstormsecurity.com/files/151227/SSHtranger-Things-SCP-Client-File-Issue.html |
| title | SSHtranger Things SCP Client File Issue |
Redhat
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The Hacker News
| id | THN:445A5A09D3930F981A45FE5AFA1E4CEC |
| last seen | 2019-01-15 |
| modified | 2019-01-15 |
| published | 2019-01-15 |
| reporter | The Hacker News |
| source | https://thehackernews.com/2019/01/scp-software-vulnerabilities.html |
| title | 36-Year-Old SCP Clients' Implementation Flaws Discovered |
References
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html
- http://www.openwall.com/lists/oss-security/2019/04/18/1
- http://www.openwall.com/lists/oss-security/2019/04/18/1
- http://www.openwall.com/lists/oss-security/2022/08/02/1
- http://www.openwall.com/lists/oss-security/2022/08/02/1
- http://www.securityfocus.com/bid/106741
- http://www.securityfocus.com/bid/106741
- https://access.redhat.com/errata/RHSA-2019:3702
- https://access.redhat.com/errata/RHSA-2019:3702
- https://bugzilla.redhat.com/show_bug.cgi?id=1677794
- https://bugzilla.redhat.com/show_bug.cgi?id=1677794
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c
- https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c
- https://lists.apache.org/thread.html/c45d9bc90700354b58fb7455962873c44229841880dcb64842fa7d23%40%3Cdev.mina.apache.org%3E
- https://lists.apache.org/thread.html/c45d9bc90700354b58fb7455962873c44229841880dcb64842fa7d23%40%3Cdev.mina.apache.org%3E
- https://lists.apache.org/thread.html/c7301cab36a86825359e1b725fc40304d1df56dc6d107c1fe885148b%40%3Cdev.mina.apache.org%3E
- https://lists.apache.org/thread.html/c7301cab36a86825359e1b725fc40304d1df56dc6d107c1fe885148b%40%3Cdev.mina.apache.org%3E
- https://lists.apache.org/thread.html/d540139359de999b0f1c87d05b715be4d7d4bec771e1ae55153c5c7a%40%3Cdev.mina.apache.org%3E
- https://lists.apache.org/thread.html/d540139359de999b0f1c87d05b715be4d7d4bec771e1ae55153c5c7a%40%3Cdev.mina.apache.org%3E
- https://lists.apache.org/thread.html/e47597433b351d6e01a5d68d610b4ba195743def9730e49561e8cf3f%40%3Cdev.mina.apache.org%3E
- https://lists.apache.org/thread.html/e47597433b351d6e01a5d68d610b4ba195743def9730e49561e8cf3f%40%3Cdev.mina.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
- https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W3YVQ2BPTOVDCFDVNC2GGF5P5ISFG37G/
- https://security.gentoo.org/glsa/201903-16
- https://security.gentoo.org/glsa/201903-16
- https://security.netapp.com/advisory/ntap-20190213-0001/
- https://security.netapp.com/advisory/ntap-20190213-0001/
- https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
- https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
- https://usn.ubuntu.com/3885-1/
- https://usn.ubuntu.com/3885-1/
- https://usn.ubuntu.com/3885-2/
- https://usn.ubuntu.com/3885-2/
- https://www.debian.org/security/2019/dsa-4387
- https://www.debian.org/security/2019/dsa-4387
- https://www.exploit-db.com/exploits/46193/
- https://www.exploit-db.com/exploits/46193/
- https://www.freebsd.org/security/advisories/FreeBSD-EN-19:10.scp.asc
- https://www.freebsd.org/security/advisories/FreeBSD-EN-19:10.scp.asc
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html