OSV-2023-840 Null-dereference READ in isvcd_parse_inter_slice_data_cavlc_enh_lyr
Not scored
Published
Check this codebase for OSV-2023-840 and fix it if it is affected.
What it is: OSV-2023-840 is a vulnerability in libavc, published on 13 Sep 2023. 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-2023-840 in the wild and no public exploit code.
Affected packages and fixed versions:
- libavc (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-2023-840/ (Markdown: https://insights.sbomify.com/OSV-2023-840/index.md)
A null pointer dereference in the video codec library allows attackers to cause a denial of service via crafted media files.
- 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-2023-840?
OSV-2023-840 is a vulnerability in libavc, published on 13 Sep 2023. 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=62290
Crash type: Null-dereference READ
Crash state:
isvcd_parse_inter_slice_data_cavlc_enh_lyr
isvcd_parse_epslice
isvcd_parse_decode_slice_ext_nal
Which versions are affected by OSV-2023-840?
1 open source package ship an affected version, including libavc.
| Package | Affected | Fixed in |
|---|---|---|
libavc OSS-Fuzz | All versions | None |
How do I fix OSV-2023-840?
No fix has been published for OSV-2023-840 yet. Limit exposure of the affected software until one is available.
Is OSV-2023-840 being exploited?
There is no known exploitation of OSV-2023-840 in the wild and no public exploit code.