Description (CNA)
FreeRDP before 3.32.0 stores the server-supplied signed MS-RDPEGT geometry origin unchecked in an unsigned video surface coordinate, so the blit clamp in gdiVideoShowSurface() wraps in 32-bit arithmetic and is skipped. A malicious RDP server can send a negative topLevelLeft to clients connecting with /video, causing an out-of-bounds write of decoded H.264 picture data or a client abort.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| FreeRDP / FreeRDP | affected 0 before 3.32.0; unaffected 3.32.0 |
CWE
CWE-129
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-grvc-qhhp-7h6m
- https://www.vulncheck.com/advisories/freerdp-before-3.32.0-out-of-bounds-write-via-ms-rdpegt-video-geometry
ADP enrichment
No English description supplied.