OSV-2020-197 Heap-buffer-overflow in jbig2_image_get_pixels_fast
A heap-buffer-overflow in the JBIG2 image decoder allows attackers to cause denial of service or potentially execute code 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-2020-197?
OSV-2020-197 is a memory corruption 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=20358
Crash type: Heap-buffer-overflow READ 1
Crash state:
jbig2_image_get_pixels_fast
jbig2_decode_generic_template0_TPGDON
jbig2_immediate_generic_region
Which versions are affected by OSV-2020-197?
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-2020-197?
No fix has been published for OSV-2020-197 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2020-197 being exploited?
There is no known exploitation of OSV-2020-197 in the wild and no public exploit code.