CVE-2023-22742

Published Jan 20, 2023

Last updated a year ago

Overview

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.
Source: security-advisories@github.com
NVD status: Modified

Hype score: Not currently trending

Risk scores

CVSS 3.1

Type: Primary
Base score: 5.9
Impact score: 3.6
Exploitability score: 2.2
Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity: MEDIUM

Weaknesses

security-advisories@github.com: CWE-347

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:libgit2:libgit2:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "211986E1-A66C-4735-8B6B-668FC843933C",
            "versionEndExcluding": "1.4.5"
          },
          {
            "criteria": "cpe:2.3:a:libgit2:libgit2:1.5.0:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "B2042615-3246-4D57-9182-2FAFE3397667"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

Overview

Social media

Risk scores

CVSS 3.1

Weaknesses

Configurations

References