CVE-2017-5972

The TCP stack in the Linux kernel 3.x does not properly implement a SYN cookie protection mechanism for the case of a fast network connection, which allows remote attackers to cause a denial of service (CPU consumption) by sending many TCP SYN packets, as demonstrated by an attack against the kernel-3.10.0 package in CentOS Linux 7. NOTE: third parties have been unable to discern any relationship between the GitHub Engineering finding and the Trigemini.c attack code.

• CWE-400

• http://seclists.org/oss-sec/2017/q1/573Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/96231Third Party Advisory, VDB Entry
• https://access.redhat.com/security/cve/cve-2017-5972Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1422081Issue Tracking, Third Party Advisory
• https://cxsecurity.com/issue/WLB-2017020112Exploit, Third Party Advisory
• https://githubengineering.com/syn-flood-mitigation-with-synsanity/Third Party Advisory
• https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
• https://security-tracker.debian.org/tracker/CVE-2017-5972Third Party Advisory
• https://www.exploit-db.com/exploits/41350/Third Party Advisory, VDB Entry
• http://seclists.org/oss-sec/2017/q1/573Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/96231Third Party Advisory, VDB Entry
• https://access.redhat.com/security/cve/cve-2017-5972Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1422081Issue Tracking, Third Party Advisory
• https://cxsecurity.com/issue/WLB-2017020112Exploit, Third Party Advisory
• https://githubengineering.com/syn-flood-mitigation-with-synsanity/Third Party Advisory
• https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
• https://security-tracker.debian.org/tracker/CVE-2017-5972Third Party Advisory
• https://www.exploit-db.com/exploits/41350/Third Party Advisory, VDB Entry

Published

Feb 14, 2017

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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