Description
Dislocker through 0.7.3 contains an integer underflow vulnerability in get_vmk() and get_fvek() that allows attackers to trigger out-of-bounds heap reads via crafted datum sizes. Attackers can supply a malicious BitLocker volume image with a datum_size smaller than the 36-byte AES-CCM header, causing hexdump() to over-read and crash dislocker.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Aorimn dislocker
Default version status: unaffected
0 to ≤ 0.7.3affected
References
- https://github.com/Aorimn/dislocker/commit/0706462db88efe8df88150e4c3e4332b808f4581 ↗
- https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/vmk.c#L146-L180 ↗
- https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/fvek.c#L90-L105 ↗
- https://github.com/Aorimn/dislocker ↗
- https://www.vulncheck.com/advisories/dislocker-through-0.7.3-out-of-bounds-heap-read-via-vmk-fvek-datum-size-underflow ↗