OSV-2022-621 Segv on unknown address in mpz_add
Not scored
Published
Check this codebase for OSV-2022-621 and fix it if it is affected.
What it is: OSV-2022-621 is a memory corruption vulnerability in mruby, published on 25 Jul 2022.
Exploitation: There is no known exploitation of OSV-2022-621 in the wild and no public exploit code.
Affected packages and fixed versions:
- mruby (OSS-Fuzz): affected all versions; no fix listed
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/OSV-2022-621/ (Markdown: https://insights.sbomify.com/OSV-2022-621/index.md)
A segmentation fault in mpz_add can cause a denial of service in applications using the affected Ruby math library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2022-621?
OSV-2022-621 is a memory corruption vulnerability in mruby, published on 25 Jul 2022.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49427
Crash type: Segv on unknown address
Crash state:
mpz_add
mrb_bint_add
int_add
Which versions are affected by OSV-2022-621?
1 open source package ship an affected version, including mruby.
| Package | Affected | Fixed in |
|---|---|---|
mruby OSS-Fuzz | All versions | None |
How do I fix OSV-2022-621?
No fix has been published for OSV-2022-621 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2022-621 being exploited?
There is no known exploitation of OSV-2022-621 in the wild and no public exploit code.