CVE-2022-41903
What it is
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`.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 44.3% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 44.3% in the next 30 days (EPSS).
- Severity: 9.8 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
- It meets the bar for Drop everything: critical, and exploited or very likely to be.
Details
- Published
- Last modified
- Exploit probability
- 44.3% · EPSS, next 30 days
- Weakness
- CWE-190 · Integer overflow
- Record status
- Modified
Affected
- git-scm Git ≤ 2.30.6
- git-scm Git ≤ 2.31.5
- git-scm Git ≤ 2.32.4
- git-scm Git ≤ 2.33.5
- git-scm Git ≤ 2.34.5
- git-scm Git ≤ 2.35.5
- git-scm Git ≤ 2.36.3
- git-scm Git ≤ 2.37.4
Attack profile CVSS 3.1 · 9.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-41903.md and follow it. Check whether this project is affected by CVE-2022-41903. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git-scm.com/book/en/v2/Customizing-Git-Git-Attributes#_export_subst
- https://git-scm.com/docs/pretty-formats#Documentation/pretty-formats.txt-emltltNgttruncltruncmtruncem
- https://github.com/git/git/commit/508386c6c5857b4faa2c3e491f422c98cc69ae76
- https://github.com/git/git/security/advisories/GHSA-475x-2q3q-hvwq
- https://git-scm.com/book/en/v2/Customizing-Git-Git-Attributes#_export_subst
- https://git-scm.com/docs/pretty-formats#Documentation/pretty-formats.txt-emltltNgttruncltruncmtruncem
- https://github.com/git/git/commit/508386c6c5857b4faa2c3e491f422c98cc69ae76
- https://github.com/git/git/security/advisories/GHSA-475x-2q3q-hvwq
References
- https://git-scm.com/book/en/v2/Customizing-Git-Git-Attributes#_export_subst
- https://git-scm.com/docs/pretty-formats#Documentation/pretty-formats.txt-emltltNgttruncltruncmtruncem
- https://github.com/git/git/commit/508386c6c5857b4faa2c3e491f422c98cc69ae76
- https://github.com/git/git/security/advisories/GHSA-475x-2q3q-hvwq
- https://security.gentoo.org/glsa/202312-15
- https://git-scm.com/book/en/v2/Customizing-Git-Git-Attributes#_export_subst
- https://git-scm.com/docs/pretty-formats#Documentation/pretty-formats.txt-emltltNgttruncltruncmtruncem
- https://github.com/git/git/commit/508386c6c5857b4faa2c3e491f422c98cc69ae76
- https://github.com/git/git/security/advisories/GHSA-475x-2q3q-hvwq
- https://security.gentoo.org/glsa/202312-15