OSV-2023-248 Heap-double-free in _dwarf_read_line_table_header
A heap double-free vulnerability in the DWARF line table parser allows attackers to cause denial of service or potentially execute arbitrary code via crafted binaries.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2023-248?
OSV-2023-248 is an use after free vulnerability in libdwarf, published on 27 Mar 2023.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=57443
Crash type: Heap-double-free
Crash state:
_dwarf_read_line_table_header
_dwarf_internal_srclines
dwarf_srclines_b
Which versions are affected by OSV-2023-248?
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-2023-248?
No fix has been published for OSV-2023-248 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-2023-248 being exploited?
There is no known exploitation of OSV-2023-248 in the wild and no public exploit code.