CVE-2020-4031

In FreeRDP before version 2.1.2, there is a use-after-free in gdi_SelectObject. All FreeRDP clients using compatibility mode with /relax-order-checks are affected. This is fixed in version 2.1.2.

• CWE-416
• CWE-416

• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.htmlMailing List, Third Party Advisory
• http://www.freerdp.com/2020/06/22/2_1_2-releasedRelease Notes, Vendor Advisory
• https://github.com/FreeRDP/FreeRDP/commit/6d86e20e1e7caaab4f0c7f89e36d32914dbccc52Patch, Third Party Advisory
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-gwcq-hpq2-m74gMitigation, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2023/10/msg00008.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6Y35HBHG2INICLSGCIKNAR7GCXEHQACQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XOZLH35OJWIQLM7FYDXAP2EAUBDXE76V/
• https://usn.ubuntu.com/4481-1/Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.htmlMailing List, Third Party Advisory
• http://www.freerdp.com/2020/06/22/2_1_2-releasedRelease Notes, Vendor Advisory
• https://github.com/FreeRDP/FreeRDP/commit/6d86e20e1e7caaab4f0c7f89e36d32914dbccc52Patch, Third Party Advisory
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-gwcq-hpq2-m74gMitigation, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2023/10/msg00008.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6Y35HBHG2INICLSGCIKNAR7GCXEHQACQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XOZLH35OJWIQLM7FYDXAP2EAUBDXE76V/
• https://usn.ubuntu.com/4481-1/Third Party Advisory

Published

Jun 22, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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