OSV-2021-1261 UNKNOWN READ in kh_get_ucl_hash_node
Not scored
Published
Check this codebase for OSV-2021-1261 and fix it if it is affected.
What it is: OSV-2021-1261 is a memory corruption vulnerability in libucl, published on 15 Sep 2021.
Exploitation: There is no known exploitation of OSV-2021-1261 in the wild and no public exploit code.
Affected packages and fixed versions:
- libucl (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-2021-1261/ (Markdown: https://insights.sbomify.com/OSV-2021-1261/index.md)
An unknown read vulnerability in the UCL parser library can cause a crash, potentially leading to 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-2021-1261?
OSV-2021-1261 is a memory corruption vulnerability in libucl, published on 15 Sep 2021.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38660
Crash type: UNKNOWN READ
Crash state:
kh_get_ucl_hash_node
ucl_hash_search
ucl_inherit_handler
Which versions are affected by OSV-2021-1261?
1 open source package ship an affected version, including libucl.
| Package | Affected | Fixed in |
|---|---|---|
libucl OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1261?
No fix has been published for OSV-2021-1261 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-2021-1261 being exploited?
There is no known exploitation of OSV-2021-1261 in the wild and no public exploit code.