libpff through 20260926 Heap Out-of-Bounds Read via libpff_table_read_6c_record_entries
Impact
libpff through 20260926 contains an off-by-one bounds check in libpff_table_read_6c_record_entries that allows attackers to trigger a heap out-of-bounds read via crafted 6c table record entries. Attackers can supply crafted PST, OST or PAB files to applications like pffexport or pypff to read adjacent heap memory or cause crashes.
Source excerpt · VulnCheckAffected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
libyal · libpff
Other versions: unaffected
| Version / range | Source status |
|---|---|
| 0 through 20260926 (inclusive) | affected |
Original source description
libpff through 20260926 contains an off-by-one bounds check in libpff_table_read_6c_record_entries that allows attackers to trigger a heap out-of-bounds read via crafted 6c table record entries. Attackers can supply crafted PST, OST or PAB files to applications like pffexport or pypff to read adjacent heap memory or cause crashes.
References
- Source reference github.com/libyal/libpff/issues/172
- Source reference github.com/libyal/libpff
- Patch github.com/libyal/libpff/commit/cb83eb38ffdbdfe2c69238fe7ce481ddc8513266
- Source reference github.com/libyal/libpff/blob/20260926/libpff/libpff_table.c
- Source reference hackmd.io/@haindpwn/libpff-table-parsing-oob-reads
- Security advisory www.vulncheck.com/advisories/libpff-through-20260926-heap-out-of-bounds-read-via-libpff-table-read-6c-record-entries