EUVD-2025-20677
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Lifecycle Timeline
5Description
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 reading a config value, Git strips any trailing carriage return and line feed (CRLF). When writing a config entry, values with a trailing CR are not quoted, causing the CR to be lost when the config is later read. When initializing a submodule, if the submodule path contains a trailing CR, the altered path is read resulting in the submodule being checked out to an incorrect location. If a symlink exists that points the altered path to the submodule hooks directory, and the submodule contains an executable post-checkout hook, the script may be unintentionally executed after checkout. This vulnerability is fixed in v2.43.7, v2.44.4, v2.45.4, v2.46.4, v2.47.3, v2.48.2, v2.49.1, and v2.50.1.
Analysis
Git contains a CRLF injection vulnerability (CVE-2025-48384, CVSS 8.0) in its config handling that allows attackers to escape header lines and modify config values. KEV-listed, this vulnerability in the world's most widely used version control system enables config injection attacks that could lead to arbitrary code execution through Git hooks, credential theft, or repository manipulation.
Technical Context
When Git writes a config entry, it strips trailing CRLF from values but does not quote values containing only a trailing CR. This allows an attacker who can influence config values to inject additional lines into the git config file. Injected config entries could: set malicious hooks (core.hooksPath), modify credential helpers (credential.helper), change remote URLs, or alter other security-sensitive settings. Git config is implicitly trusted by Git operations.
Affected Products
['Git (versions prior to security update)']
Remediation
Update Git immediately. Review .gitconfig and repository configs for suspicious entries. Audit core.hooksPath and credential.helper settings. Enterprise: deploy Git updates through software management.
Priority Score
Vendor Status
Ubuntu
Priority: High| Release | Status | Version |
|---|---|---|
| bionic | released | 1:2.17.1-1ubuntu0.18+esm2 |
| focal | released | 1:2.25.1-1ubuntu3.14+esm1 |
| jammy | released | 1:2.34.1-1ubuntu1.13 |
| noble | released | 1:2.43.0-1ubuntu7.3 |
| oracular | released | 1:2.45.2-1ubuntu1.2 |
| plucky | released | 1:2.48.1-0ubuntu1.1 |
| upstream | released | 2.43.7 |
| xenial | released | 1:2.7.4-0ubuntu1.10+esm9 |
Debian
Bug #1108983| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | fixed | 1:2.30.2-1+deb11u5 | - |
| bullseye (security) | fixed | 1:2.30.2-1+deb11u5 | - |
| bookworm | vulnerable | 1:2.39.5-0+deb12u3 | - |
| bookworm (security) | vulnerable | 1:2.39.5-0+deb12u2 | - |
| trixie | fixed | 1:2.47.3-0+deb13u1 | - |
| forky | fixed | 1:2.51.0-1 | - |
| sid | fixed | 1:2.53.0-1 | - |
| (unstable) | fixed | 1:2.50.1-0.1 | - |
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External POC / Exploit Code
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