CVE-2018-20175

rdesktop versions up to and including v1.8.3 contains several Integer Signedness errors that lead to Out-Of-Bounds Reads in the file mcs.c and result in a Denial of Service (segfault).

• CWE-125

• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html
• http://www.securityfocus.com/bid/106938Third Party Advisory, VDB Entry
• https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2019/02/msg00030.htmlMailing List, Third Party Advisory
• https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/Exploit, Third Party Advisory
• https://security.gentoo.org/glsa/201903-06Third Party Advisory
• https://www.debian.org/security/2019/dsa-4394Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html
• http://www.securityfocus.com/bid/106938Third Party Advisory, VDB Entry
• https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2019/02/msg00030.htmlMailing List, Third Party Advisory
• https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/Exploit, Third Party Advisory
• https://security.gentoo.org/glsa/201903-06Third Party Advisory
• https://www.debian.org/security/2019/dsa-4394Third Party Advisory

Published

Mar 15, 2019

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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