OSV-2022-949 Heap-use-after-free in s_file_write_flush
Not scored
Published
Check this codebase for OSV-2022-949 and fix it if it is affected.
What it is: OSV-2022-949 is an use after free vulnerability in ghostscript, published on 24 Sep 2022.
Exploitation: There is no known exploitation of OSV-2022-949 in the wild and no public exploit code.
Affected packages and fixed versions:
- ghostscript (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-2022-949/ (Markdown: https://insights.sbomify.com/OSV-2022-949/index.md)
A heap-use-after-free vulnerability in file writing functions allows attackers to potentially execute code or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2022-949?
OSV-2022-949 is an use after free vulnerability in ghostscript, published on 24 Sep 2022.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=51745
Crash type: Heap-use-after-free READ 8
Crash state:
s_file_write_flush
sclose
stream_finalize
Which versions are affected by OSV-2022-949?
1 open source package ship an affected version, including ghostscript.
| Package | Affected | Fixed in |
|---|---|---|
ghostscript OSS-Fuzz | All versions | None |
How do I fix OSV-2022-949?
No fix has been published for OSV-2022-949 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is OSV-2022-949 being exploited?
There is no known exploitation of OSV-2022-949 in the wild and no public exploit code.