| Name | CVE-2021-41160 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3654-1 |
| Debian Bugs | 1001062 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| freerdp2 (PTS) | buster | 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2 | vulnerable |
| buster (security) | 2.3.0+dfsg1-2+deb10u4 | fixed |
| bullseye | 2.3.0+dfsg1-2+deb11u1 | vulnerable |
| bookworm | 2.10.0+dfsg1-1 | fixed |
| sid, trixie | 2.11.2+dfsg1-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bullseye] - freerdp2 <no-dsa> (Minor issue)
[stretch] - freerdp <no-dsa> (Minor issue)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7c9r-6r2q-93qg
https://github.com/FreeRDP/FreeRDP/pull/7349
https://github.com/FreeRDP/FreeRDP/commit/217e0caa181fc1690cf84dd6a3ba1a4f90c02692