CVE-2023-22742

 

Published at: - 21-01-2023 12:15

Last modified: - 30-01-2023 09:53

Total changes: - 3

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

 

Verification logic

 

Reference

• https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56
• https://github.com/libgit2/libgit2/releases/tag/v1.5.1
• https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq
• https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea
• https://github.com/libgit2/libgit2/releases/tag/v1.4.5
• https://www.libssh2.org

 

Keywords

NVD

 

CVE-2023-22742

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures