OSV-2021-1239 Heap-buffer-overflow in stbi__load_and_postprocess_8bit
Not scored
Published
Check this codebase for OSV-2021-1239 and fix it if it is affected.
What it is: OSV-2021-1239 is a memory corruption vulnerability in stb, published on 12 Sep 2021.
Exploitation: There is no known exploitation of OSV-2021-1239 in the wild and no public exploit code.
Affected packages and fixed versions:
- stb (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-2021-1239/ (Markdown: https://insights.sbomify.com/OSV-2021-1239/index.md)
A heap-buffer-overflow in the stb_image library allows attackers to cause crashes or potentially execute code via crafted image 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-2021-1239?
OSV-2021-1239 is a memory corruption vulnerability in stb, published on 12 Sep 2021.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=38394
Crash type: Heap-buffer-overflow READ 2
Crash state:
stbi__load_and_postprocess_8bit
stb_image.h
Which versions are affected by OSV-2021-1239?
1 open source package ship an affected version, including stb.
| Package | Affected | Fixed in |
|---|---|---|
stb OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1239?
No fix has been published for OSV-2021-1239 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-2021-1239 being exploited?
There is no known exploitation of OSV-2021-1239 in the wild and no public exploit code.