OSV-2020-2018 Heap-use-after-free in fpixChangeRefcount
A heap-use-after-free vulnerability in the Leptonica image processing library allows attackers to cause crashes or potentially execute arbitrary code via crafted images.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2020-2018?
OSV-2020-2018 is an use after free vulnerability in leptonica, published on 12 Oct 2020.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26260
Crash type: Heap-use-after-free READ 4
Crash state:
fpixChangeRefcount
fpixDestroy
fpix2_fuzzer.cc
Which versions are affected by OSV-2020-2018?
1 open source package ship an affected version, including leptonica.
| Package | Affected | Fixed in |
|---|---|---|
leptonica OSS-Fuzz | All versions | None |
How do I fix OSV-2020-2018?
No fix has been published for OSV-2020-2018 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-2020-2018 being exploited?
There is no known exploitation of OSV-2020-2018 in the wild and no public exploit code.