CVE-2021-22865

 

Published at: - 02-04-2021 08:15

Last modified: - 25-10-2022 04:04

Total changes: - 3

Description

An improper access control vulnerability was identified in GitHub Enterprise Server that allowed access tokens generated from a GitHub App's web authentication flow to read private repository metadata via the REST API without having been granted the appropriate permissions. To exploit this vulnerability, an attacker would need to create a GitHub App on the instance and have a user authorize the application through the web authentication flow. The private repository metadata returned would be limited to repositories owned by the user the token identifies. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.0.4 and was fixed in versions 3.0.4, 2.22.10, 2.21.18. This vulnerability was reported via the GitHub Bug Bounty program.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

 

Verification logic

 

Reference

• https://docs.github.com/en/enterprise-server@2.21/admin/release-notes#2.21.18
• https://docs.github.com/en/enterprise-server@2.22/admin/release-notes#2.22.10
• https://docs.github.com/en/enterprise-server@3.0/admin/release-notes#3.0.4

 

Keywords

NVD

 

CVE-2021-22865

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures