CVE-2023-23761
GitHub Enterprise Server SSH Certificate Authority Unauthorized Authentication
Description
An improper authentication vulnerability was identified in GitHub Enterprise Server that allowed an unauthorized actor to modify other users' secret gists by authenticating through an SSH certificate authority. To do so, a user had to know the secret gist's URL. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.9 and was fixed in versions 3.4.18, 3.5.15, 3.6.11, 3.7.8, and 3.8.1. This vulnerability was reported via the GitHub Bug Bounty program.
INFO
Published Date :
April 7, 2023, 7:15 p.m.
Last Modified :
April 18, 2023, 4:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.8
Exploitability Score :
1.3
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-2023-23761.
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-2023-23761 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-23761 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Apr. 18, 2023
Action Type Old Value New Value Changed Description An improper authentication vulnerability was identified in GitHub Enterprise Server that allowed an unauthorized actor to modify other users' secret gists by authenticating through an SSH certificate authority. To do so, a user had to know the secret gist’s URL. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.9 and was fixed in versions 3.4.18, 3.5.15, 3.6.11, 3.7.8, and 3.8.1. This vulnerability was reported via the GitHub Bug Bounty program. An improper authentication vulnerability was identified in GitHub Enterprise Server that allowed an unauthorized actor to modify other users' secret gists by authenticating through an SSH certificate authority. To do so, a user had to know the secret gist's URL. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.9 and was fixed in versions 3.4.18, 3.5.15, 3.6.11, 3.7.8, and 3.8.1. This vulnerability was reported via the GitHub Bug Bounty program. -
Initial Analysis by [email protected]
Apr. 14, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://docs.github.com/en/[email protected]/admin/release-notes#3.4.18 No Types Assigned https://docs.github.com/en/[email protected]/admin/release-notes#3.4.18 Release Notes Changed Reference Type https://docs.github.com/en/[email protected]/admin/release-notes#3.5.15 No Types Assigned https://docs.github.com/en/[email protected]/admin/release-notes#3.5.15 Release Notes Changed Reference Type https://docs.github.com/en/[email protected]/admin/release-notes#3.6.11 No Types Assigned https://docs.github.com/en/[email protected]/admin/release-notes#3.6.11 Release Notes Changed Reference Type https://docs.github.com/en/[email protected]/admin/release-notes#3.7.8 No Types Assigned https://docs.github.com/en/[email protected]/admin/release-notes#3.7.8 Release Notes Changed Reference Type https://docs.github.com/en/[email protected]/admin/release-notes#3.8.1 No Types Assigned https://docs.github.com/en/[email protected]/admin/release-notes#3.8.1 Release Notes Added CWE NIST CWE-287 Added CPE Configuration OR *cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* versions up to (excluding) 3.4.18 *cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* versions from (including) 3.5.0 up to (excluding) 3.5.15 *cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* versions from (including) 3.6.0 up to (excluding) 3.6.11 *cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* versions from (including) 3.7.0 up to (excluding) 3.7.8 *cpe:2.3:a:github:enterprise_server:3.8.0:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-23761 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-2023-23761
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.13 }} 0.01%
score
0.47755
percentile