CVE-2023-39350

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.

• CWE-191
• CWE-191

• https://github.com/FreeRDP/FreeRDP/commit/e204fc8be5a372626b13f66daf2abafe71dbc2dcPatch
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rrrv-3w42-pffhExploit, Vendor Advisory
• https://lists.debian.org/debian-lts-announce/2023/10/msg00008.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6LLDAPEXRDJOM3PREDDD267SSNT77DP/Mailing List
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHMTGKCZXJPQOR5ZD2I4GPDNP2DKRXMF/Mailing List
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OH2ATH2BKDNKCJAU4WPPXK4SHLE3UJUV/Mailing List
• https://security.gentoo.org/glsa/202401-16Third Party Advisory
• https://github.com/FreeRDP/FreeRDP/commit/e204fc8be5a372626b13f66daf2abafe71dbc2dcPatch
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rrrv-3w42-pffhExploit, Vendor Advisory
• https://lists.debian.org/debian-lts-announce/2023/10/msg00008.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2025/02/msg00016.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6LLDAPEXRDJOM3PREDDD267SSNT77DP/Mailing List
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IHMTGKCZXJPQOR5ZD2I4GPDNP2DKRXMF/Mailing List
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OH2ATH2BKDNKCJAU4WPPXK4SHLE3UJUV/Mailing List
• https://security.gentoo.org/glsa/202401-16Third Party Advisory

Published

Aug 31, 2023

Last Modified

Jun 17, 2026

Status

Modified

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