CVE Vulnerability

CVE-2021-22864

A remote code execution 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 override environment variables leading to code execution 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 3.0.3 and was fixed in 3.0.3, 2.22.9, and 2.21.17. This vulnerability was reported via the GitHub Bug Bounty program.

6.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://docs.github.com/en/enterprise-server@2.21/admin/release-notes#2.21.17 Release Notes Third Party Advisory
https://docs.github.com/en/enterprise-server@2.22/admin/release-notes#2.22.9 Release Notes Third Party Advisory
https://docs.github.com/en/enterprise-server@3.0/admin/release-notes#3.0.3 Release Notes Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
Information

Published : 2021-03-23 10:15

Updated : 2021-03-26 09:08

NVD link : CVE-2021-22864

Mitre link : CVE-2021-22864

Products Affected
No products.
CWE
CWE-77