OSV-2022-622 Segv on unknown address in urshift
Not scored
Published
Check this codebase for OSV-2022-622 and fix it if it is affected.
What it is: OSV-2022-622 is a memory corruption vulnerability in mruby, published on 25 Jul 2022.
Exploitation: There is no known exploitation of OSV-2022-622 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-2022-622/ (Markdown: https://insights.sbomify.com/OSV-2022-622/index.md)
A segmentation fault in the mruby library's integer shift operation can cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2022-622?
OSV-2022-622 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=49429
Crash type: Segv on unknown address
Crash state:
urshift
mpz_div_2exp
mrb_bint_rshift
Which versions are affected by OSV-2022-622?
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-2022-622?
No fix has been published for OSV-2022-622 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-2022-622 being exploited?
There is no known exploitation of OSV-2022-622 in the wild and no public exploit code.