OSV-2020-1340 Use-of-uninitialized-value in Gfx::fillPatch
An attacker can cause a denial of service by triggering a use-of-uninitialized-value error in the PDF rendering library during patch mesh shading.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is OSV-2020-1340?
OSV-2020-1340 is a memory corruption vulnerability in poppler, published on 22 Jul 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15395
Crash type: Use-of-uninitialized-value
Crash state:
Gfx::fillPatch
Gfx::doPatchMeshShFill
Gfx::doShadingPatternFill
Which versions are affected by OSV-2020-1340?
1 open source package ship an affected version, including poppler.
| Package | Affected | Fixed in |
|---|---|---|
poppler OSS-Fuzz | All versions | None |
How do I fix OSV-2020-1340?
No fix has been published for OSV-2020-1340 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-2020-1340 being exploited?
There is no known exploitation of OSV-2020-1340 in the wild and no public exploit code.