Upstream information

CVE-2017-5972 at MITRE

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.

SUSE information

CVSS v2 Scores
  National Vulnerability Database SUSE
Base Score 7.79 4.30
Vector AV:N/AC:L/Au:N/C:N/I:N/A:C AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network Network
Access Complexity Low Medium
Authentication None None
Confidentiality Impact None None
Integrity Impact None None
Availability Impact Complete Partial
CVSS v3 Scores
  National Vulnerability Database
Base Score 7.5
Vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Access Vector Network
Access Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High

This issue is currently rated as having moderate severity.

SUSE Bugzilla entry: 1026173 [RESOLVED / UPSTREAM]

No SUSE Security Announcements cross referenced.


List of planned updates

The following information is the current evaluation information for this security issue. It might neither be accurate nor complete, Use at own risk.
Product(s) Source package
  • SUSE Linux Enterprise Server 11 SP4
  • SUSE Linux Enterprise Server for SAP 11 SP3
  • SUSE Linux Enterprise Server for SAP 11 SP4
  • SUSE Linux Enterprise Server for SAP 12 GA
  • SUSE Linux Enterprise Server for SAP 12 SP1
kernel-source