CVE-2024-50349: git Improper Encoding — Fix

Description

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals. When Git asks for credentials via a terminal prompt (i.e. without using any credential helper), it prints out the host name for which the user is expected to provide a username and/or a password. At this stage, any URL-encoded parts have been decoded already, and are printed verbatim. This allows attackers to craft URLs that contain ANSI escape sequences that the terminal interpret to confuse users e.g. into providing passwords for trusted Git hosting sites when in fact they are then sent to untrusted sites that are under the attacker's control. This issue has been patch via commits `7725b81` and `c903985` which are included in release versions v2.48.1, v2.47.2, v2.46.3, v2.45.3, v2.44.3, v2.43.6, v2.42.4, v2.41.3, and v2.40.4. Users are advised to upgrade. Users unable to upgrade should avoid cloning from untrusted URLs, especially recursive clones.

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CVSS v3.1 Score

4.7

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Weakness Type (CWE)

CWE-116 CWE-116

CWE-147 CWE-147

CWE-150 CWE-150

Affected Products

Vendor	Product	Versions
git	git	< 2.40.4
git	git	2.41.0 — 2.41.3
git	git	2.42.0 — 2.42.4
git	git	2.43.0 — 2.43.6
git	git	2.44.3 — 2.44.3
git	git	2.45.3 — 2.45.3
git	git	2.46.3 — 2.46.3
git	git	2.47.0 — 2.47.2
git	git	All
debian	debian_linux	All

References

Advisories & Patches

https://github.com/git/git/commit/7725b8100ffbbff2750ee4d61a0fcc1f53a086e8 https://github.com/git/git/commit/c903985bf7e772e2d08275c1a95c8a55ab011577 https://github.com/git/git/security/advisories/GHSA-hmg8-h7qf-7cxr

Other References

https://lists.debian.org/debian-lts-announce/2025/01/msg00025.html

Frequently Asked Questions

What is CVE-2024-50349? +

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals. When Git asks for credentials via a terminal prompt (i.e. without using any credential helper), it prints out the host name for which the user is expected to provide a username and/or a password. At this stage, any URL-encoded parts have been decoded already, and are printed verbatim. This allows attackers to craft URLs that contain ANSI escape sequences that the terminal interpret to confuse users e.g. into providing passwords for trusted Git hosting sites when in fact they are then sent to untrusted sites that are under the attacker's control. This issue has been patch via commits `7725b81` and `c903985` which are included in release versions v2.48.1, v2.47.2, v2.46.3, v2.45.3, v2.44.3, v2.43.6, v2.42.4, v2.41.3, and v2.40.4. Users are advised to upgrade. Users unable to upgrade should avoid cloning from untrusted URLs, especially recursive clones. It has a CVSS v3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2024-50349? +

CVE-2024-50349 has a CVSS v3.1 score of 4.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-50349? +

CVE-2024-50349 affects products from debian, git, specifically: debian_linux, git. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-50349? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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