CVE-2021-22865
GitHub Enterprise Server Token Privilege Escalation Vulnerability
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.
INFO
Published Date :
April 2, 2021, 6:15 p.m.
Last Modified :
Nov. 21, 2024, 5:50 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-22865.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-22865 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-22865 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.18 Added Reference https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.10 Added Reference https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.4 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference GitHub, Inc. (Products Only) https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.4 [No types assigned] Added Reference GitHub, Inc. (Products Only) https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.10 [No types assigned] Added Reference GitHub, Inc. (Products Only) https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.18 [No types assigned] Removed Reference GitHub, Inc. (Products Only) https://docs.github.com/en/[email protected]/admin/release-notes#2.21.18 Removed Reference GitHub, Inc. (Products Only) https://docs.github.com/en/[email protected]/admin/release-notes#2.22.10 Removed Reference GitHub, Inc. (Products Only) https://docs.github.com/en/[email protected]/admin/release-notes#3.0.4 -
Reanalysis by [email protected]
Oct. 25, 2022
Action Type Old Value New Value Removed CWE NIST CWE-863 Added CWE NIST NVD-CWE-Other -
Initial Analysis by [email protected]
Apr. 08, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Changed Reference Type https://docs.github.com/en/[email protected]/admin/release-notes#2.21.18 No Types Assigned https://docs.github.com/en/[email protected]/admin/release-notes#2.21.18 Release Notes, Vendor Advisory Changed Reference Type https://docs.github.com/en/[email protected]/admin/release-notes#2.22.10 No Types Assigned https://docs.github.com/en/[email protected]/admin/release-notes#2.22.10 Release Notes, Vendor Advisory Changed Reference Type https://docs.github.com/en/[email protected]/admin/release-notes#3.0.4 No Types Assigned https://docs.github.com/en/[email protected]/admin/release-notes#3.0.4 Release Notes, Vendor Advisory Added CWE NIST CWE-863 Added CPE Configuration OR *cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* versions up to (excluding) 2.21.18 *cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* versions from (including) 2.22.0 up to (excluding) 2.22.10 *cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.0.4
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-22865 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-22865
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.00%
score
0.50199
percentile