OSV-2021-1682 Heap-buffer-overflow in pdfi_repair_file
Not scored
Published
Check this codebase for OSV-2021-1682 and fix it if it is affected.
What it is: OSV-2021-1682 is a memory corruption vulnerability in ghostscript, published on 14 Dec 2021.
Exploitation: There is no known exploitation of OSV-2021-1682 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-2021-1682/ (Markdown: https://insights.sbomify.com/OSV-2021-1682/index.md)
A heap-buffer-overflow in the PDF repair function allows attackers to cause crashes or potentially execute code via malicious PDF files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is OSV-2021-1682?
OSV-2021-1682 is a memory corruption vulnerability in ghostscript, published on 14 Dec 2021.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=42325
Crash type: Heap-buffer-overflow WRITE 4
Crash state:
pdfi_repair_file
pdfi_read_xref_stream_dict
pdfi_read_xref
Which versions are affected by OSV-2021-1682?
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-2021-1682?
No fix has been published for OSV-2021-1682 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2021-1682 being exploited?
There is no known exploitation of OSV-2021-1682 in the wild and no public exploit code.