The TCP stack in the Linux kernel 3.x does not...
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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
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Timeline
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.