K13053402 : TMM vulnerability CVE-2016-7468

Security Advisory Description

An unauthenticated remote attacker may be able to disrupt services on F5 BIG-IP 11.4.1 - 11.5.4 devices with maliciously crafted network traffic. This vulnerability affects virtual servers associated with TCP profiles when the BIG-IP system’s tm.tcpprogressive db variable value is set to non-default setting “enabled”. The default value for the tm.tcpprogressive db variable is “negotiate”. An attacker may be able to disrupt traffic or cause the BIG-IP system to fail over to another device in the device group. (CVE-2016-7468)

Note: Your BIG-IP system’stm.tcpprogressivedatabase variable value may have been set toenabled if you followed the mitigation steps for TMM vulnerability CVE-2016-5023: K19784568: TMM vulnerability CVE-2016-5023.

Impact

The Traffic Management Microkernel (TMM) may restart and temporarily fail to process traffic.