CVE-2022-41903 (GCVE-0-2022-41903)
Vulnerability from cvelistv5
Published
2023-01-17 22:17
Modified
2025-03-10 21:21
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-190 - Integer Overflow or Wraparound
Summary
Git is distributed revision control system. `git log` can display commits in an arbitrary format using its `--format` specifiers. This functionality is also exposed to `git archive` via the `export-subst` gitattribute. When processing the padding operators, there is a integer overflow in `pretty.c::format_and_pad_commit()` where a `size_t` is stored improperly as an `int`, and then added as an offset to a `memcpy()`. This overflow can be triggered directly by a user running a command which invokes the commit formatting machinery (e.g., `git log --format=...`). It may also be triggered indirectly through git archive via the export-subst mechanism, which expands format specifiers inside of files within the repository during a git archive. This integer overflow can result in arbitrary heap writes, which may result in arbitrary code execution. The problem has been patched in the versions published on 2023-01-17, going back to v2.30.7. Users are advised to upgrade. Users who are unable to upgrade should disable `git archive` in untrusted repositories. If you expose git archive via `git daemon`, disable it by running `git config --global daemon.uploadArch false`.
References
Impacted products
Vendor Product Version
git git Version: < 2.30.7
Version: >= 2.31.0, < 2.31.6
Version: >= 2.32.0, < 2.32.5
Version: >= 2.33.0, < 2.33.6
Version: >= 2.34.0, < 2.34.6
Version: >= 2.35.0, < 2.35.6
Version: >= 2.36.0, < 2.36.4
Version: >= 2.37.0, < 2.37.5
Version: >= 2.38.0, < 2.38.3
Version: = 2.39.0
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