CVE-2023-29007highCWE-74

CVE-2023-29007: high-severity vulnerability in git

Arbitrary configuration injection via `git submodule deinit`

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7epss 5.6%
In short

Git can be tricked into injecting malicious settings into its configuration file when removing a submodule from a specially crafted repository. An attacker can exploit this to execute arbitrary code on a developer's machine.

Technical detail

A buffer overflow in `git_config_copy_or_rename_section_in_file()` allows injection of arbitrary configuration directives via submodule URLs exceeding 1024 characters. When `git submodule deinit` processes a malicious `.gitmodules` file, injected settings like `core.pager` or `core.sshCommand` can trigger remote code execution with user privileges.

Summary generated and translated by AI from the official 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`.
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
git · git
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