OSV-2021-1011 Use-of-uninitialized-value in jxl::N_AVX2::AddNoise
An attacker can cause a denial of service in applications using the JPEG XL library by triggering a use-of-uninitialized-value bug during image decoding.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2021-1011?
OSV-2021-1011 is an use after free vulnerability in libjxl, published on 15 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36158
Crash type: Use-of-uninitialized-value
Crash state:
jxl::N_AVX2::AddNoise
jxl::FinalizeImageRect
jxl::ThreadPool::RunCallState<jxl::FinalizeFrameDecoding
Which versions are affected by OSV-2021-1011?
1 open source package ship an affected version, including libjxl.
| Package | Affected | Fixed in |
|---|---|---|
libjxl OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1011?
No fix has been published for OSV-2021-1011 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-2021-1011 being exploited?
There is no known exploitation of OSV-2021-1011 in the wild and no public exploit code.