{
  "schema_version": "1.4.0",
  "id": "GHSA-m4ch-rfv5-x5g3",
  "modified": "2023-01-20T23:36:41Z",
  "published": "2023-01-20T23:36:41Z",
  "aliases": [],
  "summary": "git2-rs fails to verify SSH keys by default",
  "details": "The git2 and libgit2-sys crates are Rust wrappers around the [libgit2](https://libgit2.org/) 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.\n\nThe libgit2 team assigned [CVE-2023-22742](https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq) to this vulnerability. The following versions of the libgit2-sys Rust crate have been released:\n\n* libgit2-sys 0.14.2, updating the underlying libgit2 C library to version 1.5.1.\n* libgit2-sys 0.13.5, updating the underlying libgit2 C library to version 1.4.5.\n\nA 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.\n\n[You can learn more about this vulnerability in libgit2's advisory](https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq)",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "libgit2-sys"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0.14.0"
            },
            {
              "fixed": "0.14.2"
            }
          ]
        }
      ]
    },
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "libgit2-sys"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.13.5"
            }
          ]
        }
      ]
    },
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "git2"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.16.1"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-lang/git2-rs/security/advisories/GHSA-m4ch-rfv5-x5g3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-22742"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-lang/git2-rs/commit/87934f87d36753ed702792ec063be7246444a8e1"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rust-lang/git2-rs"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2023-0003.html"
    }
  ],
  "database_specific": {
    "cwe_ids": [],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2023-01-20T23:36:41Z",
    "nvd_published_at": null
  }
}