OSV-2021-719 Heap-buffer-overflow in tt_face_get_paint_layers
A heap-buffer-overflow in FreeType's COLRv1 paint layer processing allows attackers to cause crashes or potentially execute code via malicious fonts.
- 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-2021-719?
OSV-2021-719 is a memory corruption vulnerability in freetype2, published on 2 May 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=33855
Crash type: Heap-buffer-overflow READ 1
Crash state:
tt_face_get_paint_layers
FT_Get_Paint_Layers
colrv1_traverse_paint
Which versions are affected by OSV-2021-719?
1 open source package ship an affected version, including freetype2.
| Package | Affected | Fixed in |
|---|---|---|
freetype2 OSS-Fuzz | All versions | None |
How do I fix OSV-2021-719?
No fix has been published for OSV-2021-719 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-2021-719 being exploited?
There is no known exploitation of OSV-2021-719 in the wild and no public exploit code.