libfvde through 20260923 Heap Out-of-Bounds Read via libfvde_encrypted_metadata_read_type_0x001a
Impact
libfvde through 20260923 contains a heap out-of-bounds read vulnerability in libfvde_encrypted_metadata_read_type_0x001a() caused by an unbounded strlen on embedded XML plist data. Attackers can supply a crafted FileVault 2 volume with non-NUL-terminated plist data, causing libfvde_volume_open() to read past the heap block buffer.
Source excerpt · VulnCheckAffected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
libyal · libfvde
Other versions: unaffected
| Version / range | Source status |
|---|---|
| 0 through 20260923 (inclusive) | affected |
Original source description
libfvde through 20260923 contains a heap out-of-bounds read vulnerability in libfvde_encrypted_metadata_read_type_0x001a() caused by an unbounded strlen on embedded XML plist data. Attackers can supply a crafted FileVault 2 volume with non-NUL-terminated plist data, causing libfvde_volume_open() to read past the heap block buffer.
References
- Source reference github.com/libyal/libfvde/issues/70
- Source reference github.com/libyal/libfvde
- Patch github.com/libyal/libfvde/commit/c2676fe49d0da44d66e7d750e72c57d2670f0b8f
- Source reference github.com/libyal/libfvde/blob/20260923/libfvde/libfvde_encrypted_metadata.c
- Source reference hackmd.io/@haindpwn/libfvde-encrypted-metadata-oob-read
- Security advisory www.vulncheck.com/advisories/libfvde-through-20260923-heap-out-of-bounds-read-via-libfvde-encrypted-metadata-read-type-0x001a