OSV-2023-137 Heap-buffer-overflow in OT::Layout::Common::Coverage::get_population
A heap-buffer-overflow in HarfBuzz allows attackers to cause denial of service or potentially execute code via crafted font files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2023-137?
OSV-2023-137 is a memory corruption vulnerability in harfbuzz, published on 3 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=56510
Crash type: Heap-buffer-overflow READ 1
Crash state:
OT::Layout::Common::Coverage::get_population
OT::Layout::GPOS_impl::SinglePosFormat1::sanitize
hb_sanitize_context_t::return_t OT::Layout::GPOS_impl::PosLookupSubTable::dispat
Which versions are affected by OSV-2023-137?
1 open source package ship an affected version, including harfbuzz.
| Package | Affected | Fixed in |
|---|---|---|
harfbuzz OSS-Fuzz | All versions | None |
How do I fix OSV-2023-137?
No fix has been published for OSV-2023-137 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-2023-137 being exploited?
There is no known exploitation of OSV-2023-137 in the wild and no public exploit code.