OSV-2018-48 Heap-buffer-overflow in PCF_Glyph_Load
A heap buffer overflow in FreeType's PCF glyph loading allows attackers to cause denial of service or potentially execute code via crafted fonts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is OSV-2018-48?
OSV-2018-48 is a memory corruption vulnerability in freetype2, published on 13 Jan 2021. It can only be exploited from the same machine or local network, 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=9524
Crash type: Heap-buffer-overflow READ 2
Crash state:
PCF_Glyph_Load
FT_Load_Glyph
ftfuzzer.cc
Which versions are affected by OSV-2018-48?
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-2018-48?
No fix has been published for OSV-2018-48 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-2018-48 being exploited?
There is no known exploitation of OSV-2018-48 in the wild and no public exploit code.