title: Arbitrary configuration injection via `git submodule deinit`
description: Git is a revision control system. Prior to versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8, 2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1, a specially crafted `.gitmodules` file with submodule URLs that are longer than 1024 characters can used to exploit a bug in `config.c::git_config_copy_or_rename_section_in_file()`. This bug can be used to inject arbitrary configuration into a user's `$GIT_DIR/config` when attempting to remove the configuration section associated with that submodule. When the attacker injects configuration values which specify executables to run (such as `core.pager`, `core.editor`, `core.sshCommand`, etc.) this can lead to a remote code execution. A fix A fix is available in versions 2.30.9, 2.31.8, 2.32.7, 2.33.8, 2.34.8, 2.35.8, 2.36.6, 2.37.7, 2.38.5, 2.39.3, and 2.40.1. As a workaround, avoid running `git submodule deinit` on untrusted repositories or without prior inspection of any submodule sections in `$GIT_DIR/config`.
problem types: CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
affected:
{
vendor: git
product: git
versions:
version: < 2.30.9, status: affected
version: >= 2.31.0, < 2.31.8, status: affected
version: >= 2.32.0, < 2.32.7, status: affected
version: >= 2.33.0, < 2.33.8, status: affected
version: >= 2.34.0, < 2.34.8, status: affected
version: >= 2.35.0, < 2.35.8, status: affected
version: >= 2.36.0, < 2.36.6, status: affected
version: >= 2.37.0, < 2.37.7, status: affected
version: >= 2.38.0, < 2.38.5, status: affected
version: >= 2.39.0, < 2.39.3, status: affected
version: >= 2.40.0, < 2.40.1, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: LOCAL
availabilityImpact: HIGH
baseScore: 7
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
version: 3.1
]