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.
The product does not properly control the allocation and maintenance of a limited resource.
| Link | Tags |
|---|---|
| http://seclists.org/oss-sec/2017/q1/573 | third party advisory mailing list |
| https://www.exploit-db.com/exploits/41350/ | exploit vdb entry third party advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1422081 | issue tracking third party advisory |
| https://cxsecurity.com/issue/WLB-2017020112 | third party advisory exploit |
| https://security-tracker.debian.org/tracker/CVE-2017-5972 | third party advisory |
| https://githubengineering.com/syn-flood-mitigation-with-synsanity/ | third party advisory |
| http://www.securityfocus.com/bid/96231 | vdb entry third party advisory |
| https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.html | exploit vdb entry third party advisory |
| https://access.redhat.com/security/cve/cve-2017-5972 | third party advisory |