libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of libgit2 require the caller to set the `certificate_check` field of libgit2's `git_remote_callbacks` structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking. This means that by default - without configuring a certificate check callback, clients will not perform validation on the server SSH keys and may be subject to a man-in-the-middle attack. Users are encouraged to upgrade to v1.4.5 or v1.5.1. Users unable to upgrade should ensure that all relevant certificates are manually checked.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2024:0586 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2023-22742:
    libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the     optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of     libgit2 require the caller to set the `certificate_check` field of libgit2/'s `git_remote_callbacks`     structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking.
    This means that by default - without configuring a certificate check callback, clients will not perform     validation on the server SSH keys and may be subject to a man-in-the-middle attack. Users are encouraged     to upgrade to v1.4.5 or v1.5.1. Users unable to upgrade should ensure that all relevant certificates are     manually checked.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-202411-05 (libgit2: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in libgit2. Please review the CVE identifiers referenced     below for details.

Tenable has extracted the preceding description block directly from the Gentoo Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of libgit2 / rust installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-22742 advisory.

  - libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the     optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of     libgit2 require the caller to set the `certificate_check` field of libgit2's `git_remote_callbacks`     structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking.
    This means that by default - without configuring a certificate check callback, clients will not perform     validation on the server SSH keys and May be subject to a man-in-the-middle attack. Users are encouraged     to upgrade to v1.4.5 or v1.5.1. Users unable to upgrade should ensure that all relevant certificates are     manually checked. (CVE-2023-22742)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 23.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6678-1 advisory.

    It was discovered that libgit2 mishandled equivalent filenames on NTFS partitions. If a user or automated     system were tricked into cloning a specially crafted repository, an attacker could possibly use this issue     to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
    (CVE-2020-12278, CVE-2020-12279)

    It was discovered that libgit2 did not perform certificate checking by default. An attacker could possibly     use this issue to perform a machine-in-the-middle attack. This issue only affected Ubuntu 16.04 LTS,     Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2023-22742)

    It was discovered that libgit2 could be made to run into an infinite loop. An attacker could possibly use     this issue to cause a denial of service. This issue only affected Ubuntu 23.10. (CVE-2024-24575)

    It was discovered that libgit2 did not properly manage memory. An attacker could possibly use this issue     to cause a denial of service or execute arbitrary code. (CVE-2024-24577)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the
    optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of
    libgit2 require the caller to set the `certificate_check` field of libgit2's `git_remote_callbacks`
    structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking.
    This means that by default - without configuring a certificate check callback, clients will not perform
    validation on the server SSH keys and may be subject to a man-in-the-middle attack. Users are encouraged
    to upgrade to v1.4.5 or v1.5.1. Users unable to upgrade should ensure that all relevant certificates are
    manually checked. (CVE-2023-22742)

The remote SUSE Linux SLES15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:1909-1 advisory.

    - CVE-2023-22742: Fixed SSH keys verification failure (bsc#1207364).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:1788-1 advisory.

    - CVE-2023-22742: Verify ssh remote host keys (bsc#1207364)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2023:1570-1 advisory.

    - CVE-2023-22742: Fixed SSH keys verification failure (bsc#1207364).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3340 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3340-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                         Tobias Frost     February 23, 2023                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : libgit2     Version        : 0.27.7+dfsg.1-0.2+deb10u1     CVE ID         : CVE-2020-12278 CVE-2020-12279 CVE-2023-22742     Debian Bug     : 1029368

    A vulnerability have been found in libgit2, a cross-platform, linkable     library implementation of Git, which may result in remote code execution     when cloning a repository on a NTFS-like filesystem or man-in-the-middle     attacks due to improper verification of cryptographic Signature.

    CVE-2020-12278

        An issue was discovered in libgit2 before 0.28.4 and 0.9x before         0.99.0.  path.c mishandles equivalent filenames that exist because of         NTFS Alternate Data Streams. This may allow remote code execution when         cloning a repository.

    CVE-2020-12279

        An issue was discovered in libgit2 before 0.28.4 and 0.9x before         0.99.0.  checkout.c mishandles equivalent filenames that exist because         of NTFS short names. This may allow remote code execution when cloning a         repository

    CVE-2023-22742

        libgit2 is a cross-platform, linkable library implementation of Git.
        When using an SSH remote with the optional libssh2 backend, libgit2 does         not perform certificate checking by default. Prior versions of libgit2         require the caller to set the `certificate_check` field of libgit2's         `git_remote_callbacks` structure - if a certificate check callback is         not set, libgit2 does not perform any certificate checking. This means         that by default - without configuring a certificate check callback,         clients will not perform validation on the server SSH keys and may be         subject to a man-in-the-middle attack.

    For Debian 10 buster, these problems have been fixed in version     0.27.7+dfsg.1-0.2+deb10u1.

    We recommend that you upgrade your libgit2 packages.

    For the detailed security status of libgit2 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libgit2

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
239535	TencentOS Server 4: libgit2 (TSSA-2024:0586)	Nessus	Tencent Local Security Checks	Local	medium
210448	GLSA-202411-05 : libgit2: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	Local	medium
202348	CBL Mariner 2.0 Security Update: libgit2 / rust (CVE-2023-22742)	Nessus	MarinerOS Local Security Checks	Local	medium
191559	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 23.10 : libgit2 vulnerabilities (USN-6678-1)	Nessus	Ubuntu Local Security Checks	Local	critical
405197	Alpine: multiple libgit2 packages: security update to 1.5.1-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	medium
405197	Alpine: multiple libgit2 packages: security update to 1.5.1-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	medium
174493	SUSE SLES15 / openSUSE 15 Security Update : libgit2 (SUSE-SU-2023:1909-1)	Nessus	SuSE Local Security Checks	Local	medium
174011	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : libgit2 (SUSE-SU-2023:1788-1)	Nessus	SuSE Local Security Checks	Local	medium
173410	openSUSE 15 Security Update : libgit2 (SUSE-SU-2023:1570-1)	Nessus	SuSE Local Security Checks	Local	medium
171871	Debian dla-3340 : libgit2-27 - security update	Nessus	Debian Local Security Checks	Local	critical

Detections

Analytics

CVE-2023-22742

medium

Tenable Plugins

medium

medium

medium

critical

medium

medium

medium

medium

medium

critical