OSV-2022-73 Heap-use-after-free in pdfi_cspace_free_callback
A heap-use-after-free vulnerability in the Ghostscript PDF interpreter allows attackers to execute arbitrary code or cause a denial of service via crafted PDF files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is OSV-2022-73?
OSV-2022-73 is an use after free vulnerability in ghostscript, published on 22 Jan 2022.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=43904
Crash type: Heap-use-after-free READ 8
Crash state:
pdfi_cspace_free_callback
gs_cspace_final
alloc_restore_step_in
Which versions are affected by OSV-2022-73?
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-2022-73?
No fix has been published for OSV-2022-73 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-2022-73 being exploited?
There is no known exploitation of OSV-2022-73 in the wild and no public exploit code.