OSV-2018-358 Use-of-uninitialized-value in jbig2_arith_bytein
An attacker can cause a denial of service via a use-of-uninitialized-value bug in the JBIG2 arithmetic decoder.
- 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-2018-358?
OSV-2018-358 is an use after free vulnerability in mupdf, published on 15 Jan 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=9677
Crash type: Use-of-uninitialized-value
Crash state:
jbig2_arith_bytein
jbig2_arith_new
jbig2_decode_pattern_dict
Which versions are affected by OSV-2018-358?
1 open source package ship an affected version, including mupdf.
| Package | Affected | Fixed in |
|---|---|---|
mupdf OSS-Fuzz | All versions | None |
How do I fix OSV-2018-358?
No fix has been published for OSV-2018-358 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-2018-358 being exploited?
There is no known exploitation of OSV-2018-358 in the wild and no public exploit code.