OSV-2020-1564 Use-of-uninitialized-value in pb_encode_varint
Not scored
Published
Check this codebase for OSV-2020-1564 and fix it if it is affected.
What it is: OSV-2020-1564 is a vulnerability in nanopb, published on 2 Aug 2020.
Exploitation: There is no known exploitation of OSV-2020-1564 in the wild and no public exploit code.
Affected packages and fixed versions:
- nanopb (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-2020-1564/ (Markdown: https://insights.sbomify.com/OSV-2020-1564/index.md)
An attacker can cause a denial of service in the nanopb library by triggering a use-of-uninitialized-value error during varint encoding.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-1564?
OSV-2020-1564 is a vulnerability in nanopb, published on 2 Aug 2020.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24582
Crash type: Use-of-uninitialized-value
Crash state:
pb_encode_varint
pb_enc_varint
encode_array
Which versions are affected by OSV-2020-1564?
1 open source package ship an affected version, including nanopb.
| Package | Affected | Fixed in |
|---|---|---|
nanopb OSS-Fuzz | All versions | None |
How do I fix OSV-2020-1564?
No fix has been published for OSV-2020-1564 yet. Limit exposure of the affected software until one is available.
Is OSV-2020-1564 being exploited?
There is no known exploitation of OSV-2020-1564 in the wild and no public exploit code.