PT-2021-15241 · Github · Github Enterprise Server

Yvvdwf · Published 2021-09-24 · Updated 2021-10-01 · CVE-2021-22868

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions GitHub Enterprise Server versions prior to 3.1.8 GitHub Enterprise Server versions prior to 3.0.16 GitHub Enterprise Server versions prior to 2.22.22

Description A path traversal issue was identified that could be exploited when building a GitHub Pages site, allowing an attacker to read files on the GitHub Enterprise Server instance. This is due to insufficient restrictions on user-controlled configuration options used by GitHub Pages. To exploit this, an attacker would need permission to create and build a GitHub Pages site. The issue was reported via the GitHub Bug Bounty program and is related to an incomplete fix for a previous issue.

Recommendations For versions prior to 3.1.8, update to version 3.1.8 or later. For versions prior to 3.0.16, update to version 3.0.16 or later. For versions prior to 2.22.22, update to version 2.22.22 or later.

Fix

Command Injection

Path traversal

Weakness Enumeration

CWE-77

CWE-22

Related Identifiers

CVE-2021-22868

Affected Products

Github Enterprise Server

References · 6

• https://osv.dev/vulnerability/CVE-2021-22868 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-22868 · Security Note
• https://t.me/cibsecurity/29400 · Telegram Post
• https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.22 · Note
• https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.16 · Note
• https://docs.github.com/en/enterprise-server%403.1/admin/release-notes#3.1.8 · Note