CVE Vulnerability

CVE-2021-22865

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / 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 NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://docs.github.com/en/enterprise-server@2.21/admin/release-notes#2.21.18 Release Notes Vendor Advisory
https://docs.github.com/en/enterprise-server@2.22/admin/release-notes#2.22.10 Release Notes Vendor Advisory
https://docs.github.com/en/enterprise-server@3.0/admin/release-notes#3.0.4 Release Notes Vendor 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 : 2021-04-02 06:15

Updated : 2022-10-25 02:04

NVD link : CVE-2021-22865

Mitre link : CVE-2021-22865

Products Affected
No products.
CWE
NVD-CWE-Other