GHSA-3rm3-gwm3-q9hjHighCVSS 6.5
rdesktop through 1.9.0 contains a heap out-of-bounds read vulnerability in process_bmpcache2() in...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (7)
- https://nvd.nist.gov/vuln/detail/CVE-2026-112279
- 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://hackmd.io/@haindpwn/rdesktop-bitmap-decompress-oob-read
- https://www.vulncheck.com/advisories/rdesktop-through-1.9.0-heap-out-of-bounds-read-via-process-bmpcache2
- https://github.com/advisories/GHSA-3rm3-gwm3-q9hj