$ cve CVE-2022-41903 JSON

CVE-2022-41903

9.8

CRITICAL · CVSS 3.1 · EPSS 44.3% (pctl 99)

Patch early

EPSS 44.3% — above the 10% action threshold.

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`.

Scoring

CVSS	9.8 (CRITICAL, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS	44.27% — more likely to be exploited than 99% of all CVEs
Weakness	CWE-190
On CISA KEV	no
Public exploit	none known
Published	2023-01-17
Last modified	2026-06-17

Affected (1)

Vendor	Product
git-scm	git

References

→ the Explorer · watch your stack · NVD