{"id":"CVE-2023-39350","summary":"Incorrect offset calculation leading to denial of service in FreeRDP","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.","aliases":["GHSA-rrrv-3w42-pffh"],"modified":"2026-08-18T16:27:17.931554Z","published":"2023-08-31T19:31:13.392Z","related":["ALSA-2024:2208","SUSE-SU-2023:4611-1","SUSE-SU-2023:4893-1","openSUSE-SU-2024:13504-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-191"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39350.json"},"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/02/msg00016.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6LLDAPEXRDJOM3PREDDD267SSNT77DP/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHMTGKCZXJPQOR5ZD2I4GPDNP2DKRXMF/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OH2ATH2BKDNKCJAU4WPPXK4SHLE3UJUV/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39350.json"},{"type":"ADVISORY","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rrrv-3w42-pffh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-39350"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202401-16"},{"type":"FIX","url":"https://github.com/FreeRDP/FreeRDP/commit/e204fc8be5a372626b13f66daf2abafe71dbc2dc"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/freerdp/freerdp","events":[{"introduced":"0"},{"fixed":"1384b3c33b9bd7599633cc54bf20cf20ec6be83c"},{"introduced":"f468a06d88c55b9ed484757326a9528cf27d33f4"},{"fixed":"e204fc8be5a372626b13f66daf2abafe71dbc2dc"}],"database_specific":{"cpe":["cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*","cpe:2.3:a:freerdp:freerdp:3.0.0:beta1:*:*:*:*:*:*","cpe:2.3:a:freerdp:freerdp:3.0.0:beta2:*:*:*:*:*:*"],"extracted_events":[{"introduced":"0"},{"fixed":"2.11.0"},{"introduced":"3.0.0-beta1"},{"last_affected":"3.0.0-beta1"},{"introduced":"3.0.0-beta2"},{"last_affected":"3.0.0-beta2"}],"source":["CPE_RANGE","CPE_STRING","REFERENCES"]}}],"versions":["3.0.0-beta1","3.0.0-beta2","2.10.0","2.9.0","2.8.1","2.8.0","2.7.0","2.6.1","2.6.0","2.5.0","2.4.1","2.3.2","2.3.1","2.3.0","2.2.0","2.1.2","2.1.1","2.1.0","2.0.0","2.0.0-rc4","2.0.0-rc3","2.0.0-rc2","2.0.0-rc1","2.0.0-rc0","2.0.0-beta1+android11","2.0.0-beta1+android10","1.2.0-beta1+android9","1.2.0-beta1+android7","1.1.0-beta+2013071101","1.1.0-beta1+ios4","1.1.0-beta1+android5","1.1.0-beta1+android4","1.1.0-beta1+ios3","1.1.0-beta1+ios2","1.1.0-beta1+android3","1.1.0-beta1+android2","1.1.0-beta1+ios1","1.1.0-beta1","1.0.1","1.0.0","1.0-beta5","1.0-beta4","1.0-beta2","1.0-beta1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-39350.json","vanir_signatures_modified":"2026-08-18T16:27:17Z","vanir_signatures":[{"deprecated":false,"digest":{"function_hash":"54068848438759215393688713051628594697","length":5649},"id":"CVE-2023-39350-00540f24","signature_type":"Function","signature_version":"v1","source":"https://github.com/freerdp/freerdp/commit/e204fc8be5a372626b13f66daf2abafe71dbc2dc","target":{"file":"libfreerdp/codec/rfx.c","function":"rfx_process_message_tileset"}},{"digest":{"line_hashes":["274933978928545150709641897212241319202","246722152735110148990168679476651678227","304280664906965065868689072837941700010","175550823714292050554287469096928302230"],"threshold":0.9},"id":"CVE-2023-39350-de15d898","signature_type":"Line","signature_version":"v1","source":"https://github.com/freerdp/freerdp/commit/e204fc8be5a372626b13f66daf2abafe71dbc2dc","target":{"file":"libfreerdp/codec/rfx.c"},"deprecated":false}]}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}