OSV-2020-851 Use-of-uninitialized-value in Mat_VarRead5
Not scored
Published
Check this codebase for OSV-2020-851 and fix it if it is affected.
What it is: OSV-2020-851 is a vulnerability in matio, published on 14 Jul 2020.
Exploitation: There is no known exploitation of OSV-2020-851 in the wild and no public exploit code.
Affected packages and fixed versions:
- matio (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-2020-851/ (Markdown: https://insights.sbomify.com/OSV-2020-851/index.md)
A use-of-uninitialized-value bug in Mat_VarRead5 can cause a crash when processing malformed MATLAB files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-851?
OSV-2020-851 is a vulnerability in matio, published on 14 Jul 2020.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=17115
Crash type: Use-of-uninitialized-value
Crash state:
Mat_VarRead5
ReadNextStructField
Mat_VarReadNextInfo5
Which versions are affected by OSV-2020-851?
1 open source package ship an affected version, including matio.
| Package | Affected | Fixed in |
|---|---|---|
matio OSS-Fuzz | All versions | None |
How do I fix OSV-2020-851?
No fix has been published for OSV-2020-851 yet. Limit exposure of the affected software until one is available.
Is OSV-2020-851 being exploited?
There is no known exploitation of OSV-2020-851 in the wild and no public exploit code.