OSV-2018-252 Heap-use-after-free in fz_fin_cached_color_converter
Not scored
Published
Check this codebase for OSV-2018-252 and fix it if it is affected.
What it is: OSV-2018-252 is an use after free vulnerability in mupdf, published on 15 Jan 2021.
Exploitation: There is no known exploitation of OSV-2018-252 in the wild and no public exploit code.
Affected packages and fixed versions:
- mupdf (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-2018-252/ (Markdown: https://insights.sbomify.com/OSV-2018-252/index.md)
A heap-use-after-free vulnerability in the MuPDF library allows attackers to cause denial of service or potentially execute code via crafted documents.
- 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-2018-252?
OSV-2018-252 is an use after free vulnerability in mupdf, published on 15 Jan 2021.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5604
Crash type: Heap-use-after-free READ 8
Crash state:
fz_fin_cached_color_converter
fz_paint_shade
fz_draw_fill_shade
Which versions are affected by OSV-2018-252?
1 open source package ship an affected version, including mupdf.
| Package | Affected | Fixed in |
|---|---|---|
mupdf OSS-Fuzz | All versions | None |
How do I fix OSV-2018-252?
No fix has been published for OSV-2018-252 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-2018-252 being exploited?
There is no known exploitation of OSV-2018-252 in the wild and no public exploit code.