Ecosyste.ms: Advisories

Advisories: GSA_kwCzR0hTQS1tNGNoLXJmdjUteDVnM84AAxHC

git2-rs fails to verify SSH keys by default

The git2 and libgit2-sys crates are Rust wrappers around the libgit2 C library. It was discovered that libgit2 1.5.0 and below did not verify SSH host keys when establishing an SSH connection, exposing users of the library to Man-In-the-Middle attacks.

The libgit2 team assigned CVE-2023-22742 to this vulnerability. The following versions of the libgit2-sys Rust crate have been released:

• libgit2-sys 0.14.2, updating the underlying libgit2 C library to version 1.5.1.
• libgit2-sys 0.13.5, updating the underlying libgit2 C library to version 1.4.5.

A new git2 crate version has also been released, 0.16.1. This version only bumps its libgit2-sys dependency to ensure no vulnerable libgit2-sys versions are used, but contains no code changes: if you update the libgit2-sys version there is no need to also update the git2 crate version.

You can learn more about this vulnerability in libgit2's advisory

Permalink: https://github.com/advisories/GHSA-m4ch-rfv5-x5g3

Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 8 days ago
Updated: 6 days ago

CVSS Score: 6.8
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Identifiers: GHSA-m4ch-rfv5-x5g3
References:

• https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq
• https://github.com/rust-lang/git2-rs/security/advisories/GHSA-m4ch-rfv5-x5g3
• https://nvd.nist.gov/vuln/detail/CVE-2023-22742
• https://github.com/rust-lang/git2-rs/commit/87934f87d36753ed702792ec063be7246444a8e1
• https://rustsec.org/advisories/RUSTSEC-2023-0003.html
• https://github.com/advisories/GHSA-m4ch-rfv5-x5g3

Affected Packages