OSV-2020-95 Use-of-uninitialized-value in jbig2_arith_decode
Not scored
Published
Check this codebase for OSV-2020-95 and fix it if it is affected.
What it is: OSV-2020-95 is a vulnerability in jbig2dec, published on 24 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of OSV-2020-95 in the wild and no public exploit code.
Affected packages and fixed versions:
- jbig2dec (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-2020-95/ (Markdown: https://insights.sbomify.com/OSV-2020-95/index.md)
A use-of-uninitialized-value bug in the JBIG2 decoder can cause a crash when processing malicious images, affecting applications using the library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-95?
OSV-2020-95 is a vulnerability in jbig2dec, published on 24 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20493
Crash type: Use-of-uninitialized-value
Crash state:
jbig2_arith_decode
jbig2_decode_generic_template0_TPGDON
jbig2_immediate_generic_region
Which versions are affected by OSV-2020-95?
1 open source package ship an affected version, including jbig2dec.
| Package | Affected | Fixed in |
|---|---|---|
jbig2dec OSS-Fuzz | All versions | None |
How do I fix OSV-2020-95?
No fix has been published for OSV-2020-95 yet. Limit exposure of the affected software until one is available.
Is OSV-2020-95 being exploited?
There is no known exploitation of OSV-2020-95 in the wild and no public exploit code.