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    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, 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.

    Published:Feb 12, 2017
    Last Modified:Apr 20, 2025
    EPS:Feb 14, 2017
    EPSS Score:0.20773
    CVSS Score:7.5

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    https://cxsecurity.com/issue/WLB-2017020112https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.htmlhttps://cxsecurity.com/issue/WLB-2017020112https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.htmlhttps://www.exploit-db.com/exploits/41350

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    References

    http://seclists.org/oss-sec/2017/q1/573
    http://www.securityfocus.com/bid/96231
    https://access.redhat.com/security/cve/cve-2017-5972
    https://bugzilla.redhat.com/show_bug.cgi?id=1422081
    https://cxsecurity.com/issue/WLB-2017020112
    https://githubengineering.com/syn-flood-mitigation-with-synsanity/
    https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.html
    https://security-tracker.debian.org/tracker/CVE-2017-5972
    https://www.exploit-db.com/exploits/41350/
    http://seclists.org/oss-sec/2017/q1/573
    http://www.securityfocus.com/bid/96231
    https://access.redhat.com/security/cve/cve-2017-5972
    https://bugzilla.redhat.com/show_bug.cgi?id=1422081
    https://cxsecurity.com/issue/WLB-2017020112
    https://githubengineering.com/syn-flood-mitigation-with-synsanity/
    https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.html
    https://security-tracker.debian.org/tracker/CVE-2017-5972
    https://www.exploit-db.com/exploits/41350/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High