OSV-2020-161 Heap-use-after-free in jbig2_release_huffman_table
A heap-use-after-free vulnerability in the JBIG2 image library allows attackers to execute arbitrary code or cause denial of service via crafted images.
- 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-2020-161?
OSV-2020-161 is an use after free vulnerability in jbig2dec, published on 24 Jun 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=21587
Crash type: Heap-use-after-free READ 8
Crash state:
jbig2_release_huffman_table
jbig2_text_region
jbig2_data_in
Which versions are affected by OSV-2020-161?
1 open source package ship an affected version, including jbig2dec.
| Package | Affected | Fixed in |
|---|---|---|
jbig2dec OSS-Fuzz | All versions | None |
How do I fix OSV-2020-161?
No fix has been published for OSV-2020-161 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-2020-161 being exploited?
There is no known exploitation of OSV-2020-161 in the wild and no public exploit code.