CVE-2023-40187

Name	CVE-2023-40187
Description	FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions of the 3.x beta branch are subject to a Use-After-Free issue in the `avc420_ensure_buffer` and `avc444_ensure_buffer` functions. If the value of `piDstSize[x]` is 0, `ppYUVDstData[x]` will be freed. However, in this case `ppYUVDstData[x]` will not have been updated which leads to a Use-After-Free vulnerability. This issue has been addressed in version 3.0.0-beta3. Users of the 3.x beta releases are advised to upgrade. There are no known workarounds for this vulnerability.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
freerdp2 (PTS)	bullseye	2.3.0+dfsg1-2+deb11u1	fixed
	bookworm	2.10.0+dfsg1-1	fixed
	sid, trixie	2.11.7+dfsg1-6	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
freerdp2	source	(unstable)	(not affected)

Notes

- freerdp2 <not-affected> (Vulnerable code introduced in 3.0.0-beta1)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pwf9-v5p9-ch4f
Introduced by: https://github.com/FreeRDP/FreeRDP/commit/f34679397024a67ce6d568aad9ede19a8858b6f3 (3.0.0-beta1)
Fixed by: https://github.com/FreeRDP/FreeRDP/commit/ab31e8ba6ab3b4dd0183929cfb00bd5e797c402c (3.0.0-beta3)