CVE-2022-41903

Severity by source

Trivy's own label is CRITICAL. Rated critical by NVD, CBL-Mariner, Photon OS. Rated lower by Red Hat (high), AlmaLinux (high), Amazon (high), Oracle (high), Rocky Linux (high), Ubuntu (medium).

Description

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`.

Affected packages and fixed versions

References

• https://access.redhat.com/errata/RHSA-2023:0611
• https://access.redhat.com/security/cve/CVE-2022-41903
• https://bugzilla.redhat.com/2162055
• https://bugzilla.redhat.com/2162056
• https://bugzilla.redhat.com/show_bug.cgi?id=2162055
• https://bugzilla.redhat.com/show_bug.cgi?id=2162056
• https://creativecommons.org/licenses/by/4.0/
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-23521