Description
rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_bmpcache2() in orders.c that allows malicious RDP servers to crash clients via crafted revision-2 bitmap cache orders. Attackers can send an uncompressed order with large width/height or an underflowing mode nibble and short payload, causing memcpy() reads past the receive buffer and denial of service.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
rdesktop rdesktop
Default version status: unaffected
0 to ≤ 1.9.0affected
pkg:github/rdesktop/rdesktopReferences
- https://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read ↗
- https://github.com/rdesktop/rdesktop/issues/436 ↗
- https://github.com/rdesktop/rdesktop/pull/437 ↗
- https://github.com/rdesktop/rdesktop/blob/v1.9.0/orders.c ↗
- https://www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-bmpcache2 ↗