CVE-2023-40187

Use-After-Free in FreeRDP

CVSS 7.3 HIGHEPSS 1.0%CWE-416

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.3EPSS 1.0%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

31 Aug 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected products

FreeRDP · FreeRDP

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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