GHSA-m4ch-rfv5-x5g3

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Source
https://github.com/advisories/GHSA-m4ch-rfv5-x5g3
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/01/GHSA-m4ch-rfv5-x5g3/GHSA-m4ch-rfv5-x5g3.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-m4ch-rfv5-x5g3
Aliases
Published
2023-01-20T23:36:41Z
Modified
2023-11-08T04:11:38.429673Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N CVSS Calculator
Summary
git2-rs fails to verify SSH keys by default
Details

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

References

Affected packages

crates.io / libgit2-sys

Package

Affected ranges

Type
SEMVER
Events
Introduced
0.14.0
Fixed
0.14.2

crates.io / libgit2-sys

Package

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.13.5

crates.io / git2

Package

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.16.1