{"id":"UBUNTU-CVE-2023-39350","details":"FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. This issue affects Clients only. Integer underflow leading to DOS (e.g. abort due to `WINPR_ASSERT` with default compilation flags). When an insufficient blockLen is provided, and proper length validation is not performed, an Integer Underflow occurs, leading to a Denial of Service (DOS) vulnerability. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this vulnerability.","modified":"2026-02-04T03:23:42.991352Z","published":"2023-08-31T20:15:00Z","related":["USN-6401-1"],"upstream":["CVE-2023-39350"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-39350"},{"type":"REPORT","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rrrv-3w42-pffh"},{"type":"REPORT","url":"https://github.com/FreeRDP/FreeRDP/commit/e204fc8be5a372626b13f66daf2abafe71dbc2dc"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6401-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-39350"}],"affected":[{"package":{"name":"freerdp2","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/freerdp2@2.2.0+dfsg1-0ubuntu0.18.04.4+esm1?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1"}]}],"versions":["2.0.0~git20170725.1.1648deb+dfsg1-1","2.0.0~git20170725.1.1648deb+dfsg1-5","2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu1","2.0.0~git20170725.1.1648deb+dfsg1-5ubuntu2","2.0.0~git20170725.1.1648deb+dfsg1-6","2.0.0~git20170725.1.1648deb+dfsg1-6build1","2.0.0~git20170725.1.1648deb+dfsg1-7","2.0.0~git20170725.1.1648deb+dfsg1-7ubuntu0.1","2.1.1+dfsg1-0ubuntu0.18.04.1","2.2.0+dfsg1-0ubuntu0.18.04.1","2.2.0+dfsg1-0ubuntu0.18.04.2","2.2.0+dfsg1-0ubuntu0.18.04.3","2.2.0+dfsg1-0ubuntu0.18.04.4"],"ecosystem_specific":{"priority_reason":"Denial of service against FreeRDP client only.","binaries":[{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"freerdp2-dev"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"freerdp2-shadow-x11"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"freerdp2-wayland"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"freerdp2-x11"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"libfreerdp-client2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"libfreerdp-server2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"libfreerdp-shadow-subsystem2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"libfreerdp-shadow2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"libfreerdp2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"libuwac0-0"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"libuwac0-dev"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"libwinpr-tools2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"libwinpr2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"libwinpr2-dev"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.18.04.4+esm1","binary_name":"winpr-utils"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-39350.json"}},{"package":{"name":"freerdp2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/freerdp2@2.2.0+dfsg1-0ubuntu0.20.04.5?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.0+dfsg1-0ubuntu0.20.04.5"}]}],"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","2.2.0+dfsg1-0ubuntu0.20.04.4"],"ecosystem_specific":{"priority_reason":"Denial of service against FreeRDP client only.","binaries":[{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"freerdp2-dev"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"freerdp2-shadow-x11"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"freerdp2-wayland"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"freerdp2-x11"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"libfreerdp-client2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"libfreerdp-server2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"libfreerdp-shadow-subsystem2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"libfreerdp-shadow2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"libfreerdp2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"libuwac0-0"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"libuwac0-dev"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"libwinpr-tools2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"libwinpr2-2"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"libwinpr2-dev"},{"binary_version":"2.2.0+dfsg1-0ubuntu0.20.04.5","binary_name":"winpr-utils"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-39350.json"}},{"package":{"name":"freerdp2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/freerdp2@2.6.1+dfsg1-3ubuntu2.4?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.1+dfsg1-3ubuntu2.4"}]}],"versions":["2.3.0+dfsg1-2build1","2.3.0+dfsg1-2ubuntu1","2.3.0+dfsg1-2ubuntu2","2.4.1+dfsg1-1","2.4.1+dfsg1-1ubuntu1","2.4.1+dfsg1-1ubuntu2","2.5.0+dfsg1-1","2.6.0+dfsg1-1","2.6.1+dfsg1-1","2.6.1+dfsg1-3","2.6.1+dfsg1-3ubuntu1","2.6.1+dfsg1-3ubuntu2","2.6.1+dfsg1-3ubuntu2.1","2.6.1+dfsg1-3ubuntu2.2","2.6.1+dfsg1-3ubuntu2.3"],"ecosystem_specific":{"priority_reason":"Denial of service against FreeRDP client only.","binaries":[{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"freerdp2-dev"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"freerdp2-shadow-x11"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"freerdp2-wayland"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"freerdp2-x11"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"libfreerdp-client2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"libfreerdp-server2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"libfreerdp-shadow-subsystem2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"libfreerdp-shadow2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"libfreerdp2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"libuwac0-0"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"libuwac0-dev"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"libwinpr-tools2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"libwinpr2-2"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"libwinpr2-dev"},{"binary_version":"2.6.1+dfsg1-3ubuntu2.4","binary_name":"winpr-utils"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-39350.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}