OSV-2022-772 Heap-use-after-free in pdfi_cidtype2_get_glyph_index
A heap-use-after-free vulnerability in Ghostscript's 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
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is OSV-2022-772?
OSV-2022-772 is an use after free vulnerability in ghostscript, published on 24 Aug 2022. 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=50527
Crash type: Heap-use-after-free READ 1
Crash state:
pdfi_cidtype2_get_glyph_index
gs_type42_glyph_info
pdfi_cidtype2_glyph_info
Which versions are affected by OSV-2022-772?
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-2022-772?
No fix has been published for OSV-2022-772 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-2022-772 being exploited?
There is no known exploitation of OSV-2022-772 in the wild and no public exploit code.