OSV-2021-1314 Use-of-uninitialized-value in LoadBinarySchema
Not scored
Published
Check this codebase for OSV-2021-1314 and fix it if it is affected.
What it is: OSV-2021-1314 is a vulnerability in flatbuffers, published on 18 Sep 2021.
Exploitation: There is no known exploitation of OSV-2021-1314 in the wild and no public exploit code.
Affected packages and fixed versions:
- flatbuffers (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-2021-1314/ (Markdown: https://insights.sbomify.com/OSV-2021-1314/index.md)
An attacker can cause a denial of service in the FlatBuffers library by triggering a use-of-uninitialized-value error during binary schema loading.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2021-1314?
OSV-2021-1314 is a vulnerability in flatbuffers, published on 18 Sep 2021.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38817
Crash type: Use-of-uninitialized-value
Crash state:
LoadBinarySchema
do_test
flatbuffers_monster_fuzzer.cc
Which versions are affected by OSV-2021-1314?
1 open source package ship an affected version, including flatbuffers.
| Package | Affected | Fixed in |
|---|---|---|
flatbuffers OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1314?
No fix has been published for OSV-2021-1314 yet. Limit exposure of the affected software until one is available.
Is OSV-2021-1314 being exploited?
There is no known exploitation of OSV-2021-1314 in the wild and no public exploit code.