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CVE-2023-22742

5.3 · MEDIUM

libgit2 is a cross-platform, linkable library implementation of Git.

Published Jan 20, 2023CWE-347EPSS 0.58%

Overview

CVE-2023-22742 is a medium-severity vulnerability. It was published on January 20, 2023 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.openwall.com/lists/oss-security/2023/11/06/5GitHubgithub.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56GitHubgithub.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58eaGitHubgithub.com/libgit2/libgit2/releases/tag/v1.4.5GitHubgithub.com/libgit2/libgit2/releases/tag/v1.5.1GitHubgithub.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjqRefwww.libssh2.orgRefwww.openwall.com/lists/oss-security/2023/11/06/5GitHubgithub.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56GitHubgithub.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea

How CyberStrike helps

Frequently asked questions

What is CVE-2023-22742?

CVE-2023-22742 is a medium-severity vulnerability. It was published on January 20, 2023 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2023-22742?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-22742?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-22742?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-22742 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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