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,…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 23.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 23.89% probability · 98th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.