Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.0.0, <= 3.19.8 |
Related Weaknesses (CWE)
References
- http://seclists.org/oss-sec/2017/q1/573Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/96231Third Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/cve-2017-5972Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1422081Issue TrackingThird Party Advisory
- https://cxsecurity.com/issue/WLB-2017020112ExploitThird Party Advisory
- https://githubengineering.com/syn-flood-mitigation-with-synsanity/Third Party Advisory
- https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.htExploitThird Party AdvisoryVDB Entry
- https://security-tracker.debian.org/tracker/CVE-2017-5972Third Party Advisory
- https://www.exploit-db.com/exploits/41350/Third Party AdvisoryVDB Entry
- http://seclists.org/oss-sec/2017/q1/573Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/96231Third Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/cve-2017-5972Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1422081Issue TrackingThird Party Advisory
- https://cxsecurity.com/issue/WLB-2017020112ExploitThird Party Advisory
- https://githubengineering.com/syn-flood-mitigation-with-synsanity/Third Party Advisory
FAQ
What is CVE-2017-5972?
CVE-2017-5972 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 servic...
How severe is CVE-2017-5972?
CVE-2017-5972 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-5972?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.