Vulnerabilities > CVE-2019-17498 - Integer Overflow or Wraparound vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
NONE Availability impact
HIGH Summary
In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Forced Integer Overflow This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.
Nessus
NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-2536.NASL description According to the version of the libssh2 package installed, the EulerOS installation on the remote host is affected by the following vulnerability : - In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.(CVE-2019-17498) 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 2019-12-09 plugin id 131810 published 2019-12-09 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/131810 title EulerOS 2.0 SP5 : libssh2 (EulerOS-SA-2019-2536) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(131810); script_version("1.3"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/07"); script_cve_id( "CVE-2019-17498" ); script_name(english:"EulerOS 2.0 SP5 : libssh2 (EulerOS-SA-2019-2536)"); 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 libssh2 package installed, the EulerOS installation on the remote host is affected by the following vulnerability : - In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.(CVE-2019-17498) 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-2019-2536 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a35dcd17"); script_set_attribute(attribute:"solution", value: "Update the affected libssh2 package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P"); 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:R/S:U/C:H/I:N/A:H"); 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:"2019/12/09"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/09"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libssh2"); 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) 2019-2020 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 = ["libssh2-1.4.3-10.1.h5.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, "libssh2"); }
NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1263.NASL description According to the version of the libssh2 package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.(CVE-2019-17498) 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 2020-03-19 modified 2020-03-13 plugin id 134552 published 2020-03-13 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/134552 title EulerOS Virtualization for ARM 64 3.0.2.0 : libssh2 (EulerOS-SA-2020-1263) code # # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(134552); script_version("1.2"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/19"); script_cve_id( "CVE-2019-17498" ); script_name(english:"EulerOS Virtualization for ARM 64 3.0.2.0 : libssh2 (EulerOS-SA-2020-1263)"); 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 libssh2 package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.(CVE-2019-17498) 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-2020-1263 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e0d65885"); script_set_attribute(attribute:"solution", value: "Update the affected libssh2 package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P"); 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:R/S:U/C:H/I:N/A:H"); 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:"2020/03/13"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/13"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libssh2"); 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 = ["libssh2-1.4.3-10.1.h5"]; 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, "libssh2"); }
NASL family Fedora Local Security Checks NASL id FEDORA_2019-91529F19E4.NASL description - fix integer overflow in SSH_MSG_DISCONNECT logic (CVE-2019-17498) 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 130615 published 2019-11-07 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130615 title Fedora 31 : libssh2 (2019-91529f19e4) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory FEDORA-2019-91529f19e4. # include("compat.inc"); if (description) { script_id(130615); script_version("1.3"); script_cvs_date("Date: 2019/12/17"); script_cve_id("CVE-2019-17498"); script_xref(name:"FEDORA", value:"2019-91529f19e4"); script_name(english:"Fedora 31 : libssh2 (2019-91529f19e4)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: " - fix integer overflow in SSH_MSG_DISCONNECT logic (CVE-2019-17498) 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." ); script_set_attribute( attribute:"see_also", value:"https://bodhi.fedoraproject.org/updates/FEDORA-2019-91529f19e4" ); script_set_attribute( attribute:"solution", value:"Update the affected libssh2 package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P"); 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:R/S:U/C:H/I:N/A:H"); 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:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:libssh2"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:31"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/21"); script_set_attribute(attribute:"patch_publication_date", value:"2019/11/07"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/07"); 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:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release"); if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! preg(pattern:"^31([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 31", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC31", reference:"libssh2-1.9.0-3.fc31")) 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, "libssh2"); }
NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-2482.NASL description This update for libssh2_org fixes the following issue : - CVE-2019-17498: Fixed an integer overflow in a bounds check that might have led to the disclosure of sensitive information or a denial of service (bsc#1154862). This update was imported from the SUSE:SLE-15:Update update project. last seen 2020-06-01 modified 2020-06-02 plugin id 130894 published 2019-11-12 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130894 title openSUSE Security Update : libssh2_org (openSUSE-2019-2482) NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-2900-1.NASL description This update for libssh2_org fixes the following issue : CVE-2019-17498: Fixed an integer overflow in a bounds check that might have led to the disclosure of sensitive information or a denial of service (bsc#1154862). 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 130619 published 2019-11-07 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130619 title SUSE SLED15 / SLES15 Security Update : libssh2_org (SUSE-SU-2019:2900-1) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1991.NASL description In libssh2, SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server For Debian 8 last seen 2020-06-01 modified 2020-06-02 plugin id 130980 published 2019-11-14 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130980 title Debian DLA-1991-1 : libssh2 security update NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2019-1_0-0263_LIBSSH2.NASL description An update of the libssh2 package has been released. last seen 2020-06-01 modified 2020-06-02 plugin id 132966 published 2020-01-16 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/132966 title Photon OS 1.0: Libssh2 PHSA-2019-1.0-0263 NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-2483.NASL description This update for libssh2_org fixes the following issue : - CVE-2019-17498: Fixed an integer overflow in a bounds check that might have led to the disclosure of sensitive information or a denial of service (bsc#1154862). This update was imported from the SUSE:SLE-15:Update update project. last seen 2020-06-01 modified 2020-06-02 plugin id 130895 published 2019-11-12 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130895 title openSUSE Security Update : libssh2_org (openSUSE-2019-2483) NASL family SuSE Local Security Checks NASL id SUSE_SU-2019-2936-1.NASL description This update for libssh2_org fixes the following issue : CVE-2019-17498: Fixed an integer overflow in a bounds check that might have led to the disclosure of sensitive information or a denial of service (bsc#1154862). 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 130898 published 2019-11-12 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130898 title SUSE SLED12 / SLES12 Security Update : libssh2_org (SUSE-SU-2019:2936-1) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-2618.NASL description According to the version of the libssh2 package installed, the EulerOS installation on the remote host is affected by the following vulnerability : - In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.(CVE-2019-17498) 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 2019-12-18 plugin id 132153 published 2019-12-18 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/132153 title EulerOS 2.0 SP3 : libssh2 (EulerOS-SA-2019-2618) NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2019-2_0-0196_LIBSSH2.NASL description An update of the libssh2 package has been released. last seen 2020-06-01 modified 2020-06-02 plugin id 132973 published 2020-01-16 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/132973 title Photon OS 2.0: Libssh2 PHSA-2019-2.0-0196 NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2020-3_0-0047_LIBSSH2.NASL description An update of the libssh2 package has been released. last seen 2020-06-01 modified 2020-06-02 plugin id 133065 published 2020-01-18 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/133065 title Photon OS 3.0: Libssh2 PHSA-2020-3.0-0047 NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1089.NASL description According to the version of the libssh2 package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerability : - In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.(CVE-2019-17498) 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 132843 published 2020-01-13 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/132843 title EulerOS Virtualization for ARM 64 3.0.5.0 : libssh2 (EulerOS-SA-2020-1089) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-2287.NASL description According to the version of the libssh2 package installed, the EulerOS installation on the remote host is affected by the following vulnerability : - In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.(CVE-2019-17498) 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 2019-11-27 plugin id 131353 published 2019-11-27 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/131353 title EulerOS 2.0 SP8 : libssh2 (EulerOS-SA-2019-2287) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2020-1282.NASL description According to the version of the libssh2 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability : - In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.(CVE-2019-17498) 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 2020-03-26 modified 2020-03-20 plugin id 134748 published 2020-03-20 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/134748 title EulerOS Virtualization 3.0.2.2 : libssh2 (EulerOS-SA-2020-1282) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2019-2473.NASL description According to the version of the libssh2 package installed, the EulerOS installation on the remote host is affected by the following vulnerability : - In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.(CVE-2019-17498) 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 2019-12-04 plugin id 131626 published 2019-12-04 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/131626 title EulerOS 2.0 SP2 : libssh2 (EulerOS-SA-2019-2473)
References
- https://github.com/kevinbackhouse/SecurityExploits/tree/8cbdbbe6363510f7d9ceec685373da12e6fc752d/libssh2/out_of_bounds_read_disconnect_CVE-2019-17498
- https://github.com/libssh2/libssh2/blob/42d37aa63129a1b2644bf6495198923534322d64/src/packet.c#L480
- https://blog.semmle.com/libssh2-integer-overflow-CVE-2019-17498/
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00026.html
- https://lists.debian.org/debian-lts-announce/2019/11/msg00010.html
- https://github.com/libssh2/libssh2/commit/dedcbd106f8e52d5586b0205bc7677e4c9868f9c
- https://lists.debian.org/debian-lts-announce/2021/12/msg00013.html
- https://security.netapp.com/advisory/ntap-20220909-0004/
- http://packetstormsecurity.com/files/172835/libssh2-1.9.0-Out-Of-Bounds-Read.html
- https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TY7EEE34RFKCTXTMBQQWWSLXZWSCXNDB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/22H4Q5XMGS3QNSA7OCL3U7UQZ4NXMR5O/