rustsec-2023-0003
Vulnerability from osv_rustsec
Published
2023-01-20 12:00
Modified
2023-01-20 23:06
Summary
git2 does not 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

To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "crypto-failure"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "libgit2-sys",
        "purl": "pkg:cargo/libgit2-sys"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.13.5"
            },
            {
              "introduced": "0.14.0"
            },
            {
              "fixed": "0.14.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2023-22742",
    "GHSA-m4ch-rfv5-x5g3",
    "GHSA-8643-3wh5-rmjq"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "The git2 and libgit2-sys crates are Rust wrappers around the\n[libgit2]() C library. It was discovered that libgit2 1.5.0\nand below did not verify SSH host keys when establishing an SSH connection,\nexposing users of the library to Man-In-the-Middle attacks.\n\nThe libgit2 team assigned [CVE-2023-22742][libgit2-advisory] to this\nvulnerability. The following versions of the libgit2-sys Rust crate have been\nreleased:\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\nbumps its libgit2-sys dependency to ensure no vulnerable libgit2-sys versions\nare used, but contains no code changes: if you update the libgit2-sys version\nthere is no need to also update the git2 crate version.\n\n[You can learn more about this vulnerability in libgit2\u0027s advisory][libgit2-advisory]\n\n[libgit2]: https://libgit2.org/\n[libgit2-advisory]: https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq",
  "id": "RUSTSEC-2023-0003",
  "modified": "2023-01-20T23:06:55Z",
  "published": "2023-01-20T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/libgit2-sys"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2023-0003.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/rust-lang/git2-rs/security/advisories/GHSA-m4ch-rfv5-x5g3"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "git2 does not verify SSH keys by default"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.