CVE Vulnerability

CVE-2021-22862

An improper access control vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user with the ability to fork a repository to disclose Actions secrets for the parent repository of the fork. This vulnerability existed due to a flaw that allowed the base reference of a pull request to be updated to point to an arbitrary SHA or another pull request outside of the fork repository. By establishing this incorrect reference in a PR, the restrictions that limit the Actions secrets sent a workflow from forks could be bypassed. This vulnerability affected GitHub Enterprise Server version 3.0.0, 3.0.0.rc2, and 3.0.0.rc1. This vulnerability was reported via the GitHub Bug Bounty program.

4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://docs.github.com/en/enterprise-server@3.0/admin/release-notes#3.0.1 Release Notes Vendor Advisory
Configurations

Configuration 1

cpe:2.3:a:github:github:3.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:github:github:3.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:github:github:3.0.0:-:*:*:*:*:*:*
Information

Published : 2021-03-03 04:15

Updated : 2022-10-25 02:03

NVD link : CVE-2021-22862

Mitre link : CVE-2021-22862

Products Affected
No products.
CWE
NVD-CWE-Other