Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://seclists.org/oss-sec/2017/q1/573 ↗
- https://www.exploit-db.com/exploits/41350/ ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=1422081 ↗
- https://cxsecurity.com/issue/WLB-2017020112 ↗
- https://security-tracker.debian.org/tracker/CVE-2017-5972 ↗
- https://githubengineering.com/syn-flood-mitigation-with-synsanity/ ↗
- http://www.securityfocus.com/bid/96231 ↗
- https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.html ↗
- https://access.redhat.com/security/cve/cve-2017-5972 ↗