OSV-2023-890 Heap-use-after-free in dwarf_dealloc
A heap-use-after-free vulnerability in the dwarf_dealloc function allows attackers to cause denial of service or potentially execute code via crafted DWARF data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2023-890?
OSV-2023-890 is an use after free vulnerability in libdwarf, published on 21 Sep 2023.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=62547
Crash type: Heap-use-after-free READ 2
Crash state:
dwarf_dealloc
_dwarf_fde_destructor
tdestroy_free_node
Which versions are affected by OSV-2023-890?
1 open source package ship an affected version, including libdwarf.
| Package | Affected | Fixed in |
|---|---|---|
libdwarf OSS-Fuzz | All versions | None |
How do I fix OSV-2023-890?
No fix has been published for OSV-2023-890 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-2023-890 being exploited?
There is no known exploitation of OSV-2023-890 in the wild and no public exploit code.