OSV-2021-1170 Heap-buffer-overflow in exif_get_slong
Not scored
Published
Check this codebase for OSV-2021-1170 and fix it if it is affected.
What it is: OSV-2021-1170 is a memory corruption vulnerability in libexif, published on 26 Aug 2021.
Exploitation: There is no known exploitation of OSV-2021-1170 in the wild and no public exploit code.
Affected packages and fixed versions:
- libexif (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-2021-1170/ (Markdown: https://insights.sbomify.com/OSV-2021-1170/index.md)
A heap-buffer-overflow in libexif allows attackers to cause denial of service or potentially execute code via crafted EXIF data.
- 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-2021-1170?
OSV-2021-1170 is a memory corruption vulnerability in libexif, published on 26 Aug 2021.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=37581
Crash type: Heap-buffer-overflow READ 1
Crash state:
exif_get_slong
exif_get_srational
mnote_apple_entry_get_value
Which versions are affected by OSV-2021-1170?
1 open source package ship an affected version, including libexif.
| Package | Affected | Fixed in |
|---|---|---|
libexif OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1170?
No fix has been published for OSV-2021-1170 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-2021-1170 being exploited?
There is no known exploitation of OSV-2021-1170 in the wild and no public exploit code.