Vulnerability Details : 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.
Published 2021-04-02 18:15:22
Updated 2022-10-25 14:04:01
Source GitHub, Inc. (Products Only)
View at NVD,   CVE.org
Vulnerability category: BypassGain privilege

Products affected by CVE-2021-22865

Exploit prediction scoring system (EPSS) score for CVE-2021-22865

EPSS FAQ
0.14%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-22865

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
 MEDIUM AV:N/AC:M/Au:N/C:P/I:N/A:N
8.6
2.9
 NIST
6.5
 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
2.8
3.6
 NIST

CWE ids for CVE-2021-22865

  • The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
    Assigned by: product-cna@github.com (Secondary)

References for CVE-2021-22865

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