OSV-2018-367 Use-of-uninitialized-value in cf2_glyphpath_lineTo
An attacker can cause a denial of service by providing a crafted font file that triggers the use of an uninitialized value in the FreeType library.
- 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-2018-367?
OSV-2018-367 is an use after free vulnerability in mupdf, published on 15 Jan 2021. 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=8323
Crash type: Use-of-uninitialized-value
Crash state:
cf2_glyphpath_lineTo
cf2_glyphpath_closeOpenPath
cf2_glyphpath_moveTo
Which versions are affected by OSV-2018-367?
1 open source package ship an affected version, including mupdf.
| Package | Affected | Fixed in |
|---|---|---|
mupdf OSS-Fuzz | All versions | None |
How do I fix OSV-2018-367?
No fix has been published for OSV-2018-367 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-2018-367 being exploited?
There is no known exploitation of OSV-2018-367 in the wild and no public exploit code.