OSV-2020-856 Use-of-uninitialized-value in deflate_slow
Not scored
Published
Check this codebase for OSV-2020-856 and fix it if it is affected.
What it is: OSV-2020-856 is a vulnerability in qpdf, published on 14 Jul 2020.
Exploitation: There is no known exploitation of OSV-2020-856 in the wild and no public exploit code.
Affected packages and fixed versions:
- qpdf (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-2020-856/ (Markdown: https://insights.sbomify.com/OSV-2020-856/index.md)
An attacker can cause a denial of service via a use-of-uninitialized-value bug in the deflate_slow function of a compression library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-856?
OSV-2020-856 is a vulnerability in qpdf, published on 14 Jul 2020.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18745
Crash type: Use-of-uninitialized-value
Crash state:
deflate_slow
deflate
Pl_Flate::handleData
Which versions are affected by OSV-2020-856?
1 open source package ship an affected version, including qpdf.
| Package | Affected | Fixed in |
|---|---|---|
qpdf OSS-Fuzz | All versions | None |
How do I fix OSV-2020-856?
No fix has been published for OSV-2020-856 yet. Limit exposure of the affected software until one is available.
Is OSV-2020-856 being exploited?
There is no known exploitation of OSV-2020-856 in the wild and no public exploit code.