CVE-2021-22868 Unsafe configuration options in GitHub Pages leading to path traversal on GitHub Enterprise Server

2021-09-2417:50:16

CWE-77

GitHub_P

www.cve.org

github

enterprise server

vulnerability

configuration options

path traversal

AI Score

5.2

Confidence

High

EPSS

0.003

Percentile

65.4%

JSON

A path traversal vulnerability was identified in GitHub Enterprise Server that could be exploited when building a GitHub Pages site. User-controlled configuration options used by GitHub Pages were not sufficiently restricted and made it possible to read files on the GitHub Enterprise Server instance. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.1.8 and was fixed in 3.1.8, 3.0.16, and 2.22.22. This vulnerability was reported via the GitHub Bug Bounty program. This is the result of an incomplete fix for CVE-2021-22867.

CNA Affected

[
  {
    "product": "GitHub Enterprise Server",
    "vendor": "GitHub",
    "versions": [
      {
        "lessThan": "2.22.22",
        "status": "affected",
        "version": "2.22",
        "versionType": "custom"
      },
      {
        "lessThan": "3.0.16",
        "status": "affected",
        "version": "3.0",
        "versionType": "custom"
      },
      {
        "lessThan": "3.1.8",
        "status": "affected",
        "version": "3.1",
        "versionType": "custom"
      }
    ]
  }
]