CVE-2023-22742
Libgit2 SSH Certificate Validation Bypass
Description
libgit2 is a cross-platform, linkable library implementation of Git. When using an SSH remote with the optional libssh2 backend, libgit2 does not perform certificate checking by default. Prior versions of libgit2 require the caller to set the `certificate_check` field of libgit2's `git_remote_callbacks` structure - if a certificate check callback is not set, libgit2 does not perform any certificate checking. This means that by default - without configuring a certificate check callback, clients will not perform validation on the server SSH keys and may be subject to a man-in-the-middle attack. Users are encouraged to upgrade to v1.4.5 or v1.5.1. Users unable to upgrade should ensure that all relevant certificates are manually checked.
INFO
Published Date :
Jan. 20, 2023, 11:15 p.m.
Last Modified :
Nov. 7, 2023, 4:07 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.2
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-2023-22742.
| URL | Resource |
|---|---|
| http://www.openwall.com/lists/oss-security/2023/11/06/5 | |
| https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 | Patch Third Party Advisory |
| https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea | Patch Third Party Advisory |
| https://github.com/libgit2/libgit2/releases/tag/v1.4.5 | Release Notes Third Party Advisory |
| https://github.com/libgit2/libgit2/releases/tag/v1.5.1 | Release Notes Third Party Advisory |
| https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq | Third Party Advisory |
| https://www.libssh2.org | Third Party Advisory |
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-2023-22742 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-22742 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.
-
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. http://www.openwall.com/lists/oss-security/2023/11/06/5 [No types assigned] -
Initial Analysis by [email protected]
Jan. 30, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 No Types Assigned https://github.com/libgit2/libgit2/commit/42e5db98b963ae503229c63e44e06e439df50e56 Patch, Third Party Advisory Changed Reference Type https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea No Types Assigned https://github.com/libgit2/libgit2/commit/cd6f679af401eda1f172402006ef8265f8bd58ea Patch, Third Party Advisory Changed Reference Type https://github.com/libgit2/libgit2/releases/tag/v1.4.5 No Types Assigned https://github.com/libgit2/libgit2/releases/tag/v1.4.5 Release Notes, Third Party Advisory Changed Reference Type https://github.com/libgit2/libgit2/releases/tag/v1.5.1 No Types Assigned https://github.com/libgit2/libgit2/releases/tag/v1.5.1 Release Notes, Third Party Advisory Changed Reference Type https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq No Types Assigned https://github.com/libgit2/libgit2/security/advisories/GHSA-8643-3wh5-rmjq Third Party Advisory Changed Reference Type https://www.libssh2.org No Types Assigned https://www.libssh2.org Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:libgit2:libgit2:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.5 *cpe:2.3:a:libgit2:libgit2:1.5.0:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-22742 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-2023-22742
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.13 }} -0.00%
score
0.48538
percentile