Vulnerability Details CVE-2023-40187
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 47.1%
CVSS Severity
CVSS v3 Score 7.3
References
- https://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/codec/h264.c#L413-L427
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pwf9-v5p9-ch4f
- https://security.gentoo.org/glsa/202401-16
- https://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/codec/h264.c#L413-L427
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pwf9-v5p9-ch4f
- https://security.gentoo.org/glsa/202401-16