OSV-2021-1081 Heap-use-after-free in gx_pattern_accum_finalize_cw
A heap-use-after-free vulnerability in Ghostscript allows attackers to potentially execute arbitrary code or cause a denial of service via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2021-1081?
OSV-2021-1081 is an use after free vulnerability in ghostscript, published on 1 Aug 2021.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36714
Crash type: Heap-use-after-free READ 8
Crash state:
gx_pattern_accum_finalize_cw
gx_device_finalize
gc_objects_set_reloc
Which versions are affected by OSV-2021-1081?
1 open source package ship an affected version, including ghostscript.
| Package | Affected | Fixed in |
|---|---|---|
ghostscript OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1081?
No fix has been published for OSV-2021-1081 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-2021-1081 being exploited?
There is no known exploitation of OSV-2021-1081 in the wild and no public exploit code.