{"id":"UBUNTU-CVE-2023-40187","details":"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known workarounds for this vulnerability.","modified":"2025-07-16T08:16:58.232646Z","published":"2023-08-31T22:15:00Z","withdrawn":"2025-07-18T16:54:37Z","upstream":["CVE-2023-40187"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-40187"},{"type":"REPORT","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pwf9-v5p9-ch4f"},{"type":"REPORT","url":"https://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/codec/h264.c#L413-L427"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-40187"}],"affected":[{"package":{"name":"freerdp2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/freerdp2@2.2.0+dfsg1-0ubuntu0.20.04.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.0+dfsg1-0ubuntu0.20.04.4"}]}],"versions":["2.0.0~git20190204.1.2693389a+dfsg1-1","2.0.0~git20190204.1.2693389a+dfsg1-2","2.0.0~git20190204.1.2693389a+dfsg1-2build1","2.0.0~git20190204.1.2693389a+dfsg1-2build2","2.1.1+dfsg1-0ubuntu0.20.04.1","2.2.0+dfsg1-0ubuntu0.20.04.1","2.2.0+dfsg1-0ubuntu0.20.04.2","2.2.0+dfsg1-0ubuntu0.20.04.3"],"ecosystem_specific":{"availability":"No 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