CVE-2021-41160
Improper region checks in FreeRDP allow out of bound write to memory
HIGH 8.8EPSS 1.7%
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. In affected versions a malicious server might trigger out of bound writes in a connected client. Connections using GDI or SurfaceCommands to send graphics updates to the client might send `0` width/height or out of bound rectangles to trigger out of bound writes. With `0` width or heigth the memory allocation will be `0` but the missing bounds checks allow writing to the pointer at this (not allocated) region. This issue has been patched in FreeRDP 2.4.1.
- Affected
- FreeRDP
- CVSS v3.1 NVD
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS v3.1 GITHUB
- 5.3 MEDIUM
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N - CVSS v2.0 NVD
- 6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P - EPSS
- 1.66% chance of exploitation in the next 30 days, 76th percentile
- Published
- 2021-10-21
- Updated
- 2025-11-03
Proof-of-concept exploits (1)
- Jajangjaman/CVE-2021-411600★ · 2022-12-27