OSV-2021-858 Use-of-uninitialized-value in jxl::N_SCALAR::Epf0Row
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 processing.
- 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-2021-858?
OSV-2021-858 is an use after free vulnerability in libjxl, published on 15 Jun 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=35234
Crash type: Use-of-uninitialized-value
Crash state:
jxl::N_SCALAR::Epf0Row
jxl::FilterPipeline::ApplyFiltersRow
jxl::FinalizeImageRect
Which versions are affected by OSV-2021-858?
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-2021-858?
No fix has been published for OSV-2021-858 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-2021-858 being exploited?
There is no known exploitation of OSV-2021-858 in the wild and no public exploit code.