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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                              ESB-2017.0530.2
                K22216037: TMM vulnerability CVE-2016-9245
                               9 March 2017

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           F5 products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-9245  

Original Bulletin: 
   https://support.f5.com/csp/article/K22216037

Revision History:  March     9 2017: Additional vulnerable configuration 
				     information provided
                   February 27 2017: Initial Release

- --------------------------BEGIN INCLUDED TEXT--------------------

K22216037: TMM vulnerability CVE-2016-9245

Security Advisory

Original Publication Date: Feb 24, 2017

Updated Date: Mar 03, 2017

Applies to (see versions):

Vulnerability Description

Malicious requests made to virtual servers with an HTTP profile can cause the
TMM to restart. The issue is exposed with BIG-IP APM profiles, regardless of 
settings. The issue is also exposed with the non-default "Normalize URI" 
configuration options used in iRules and/or BIG-IP LTM policies. 
(CVE-2016-9245)

Impact

An attacker may be able to disrupt traffic or cause the BIG-IP system to fail
over to another device in the device group. This vulnerability affects systems
with any of the following configurations:

A virtual server associated with a BIG-IP APM profile

A virtual server associated with an HTTP profile, and a local traffic policy 
that has a rule condition that is composed of the HTTP URI and the Use 
normalized URI options enabled (the Use normalized URI option is disabled by 
default).

The following example configuration snippet shows the local traffic policy 
affected by this vulnerability:

ltm policy /Common/K22216037 {

    requires { http }

    rules {

        vulnerable {

            conditions {

                0 {

                    http-uri

                    path

                    normalized

                    values { /exploitable }

                }

            }

        }

    }

    strategy /Common/first-match

}

A virtual server associated with an HTTP profile and an iRule using any of the
following iRule commands with the -normalized switch:

HTTP::uri

HTTP::query

HTTP::path

For example:

when HTTP_REQUEST {

     if { ([HTTP::uri -normalized] starts_with "/exploitable")} {

          log local0.error "K22216037 URI example"

     } elseif { ([HTTP::query -normalized] starts_with "/exploitable")} {

          log local0.error "K22216037 Query example"

     } elseif { ([HTTP::path -normalized] starts_with "/exploitable")} {

          log local0.error "K22216037 Path example"

     } }

Security Issue Status

F5 Product Development has assigned ID 628836 (BIG-IP) to this vulnerability.

To determine if your release is known to be vulnerable, the components or 
features that are affected by the vulnerability, and for information about 
releases or hotfixes that address the vulnerability, refer to the following 
table:

Product 			Versions known to be vulnerable 	Versions known to be not vulnerable 	Severity 	Vulnerable component or feature

BIG-IP LTM 			12.1.0 - 12.1.2 			13.0.0 					High 		TMM 
									12.0.0 
									11.4.0 - 11.6.1 
									11.2.1

BIG-IP AAM 			12.1.0 - 12.1.2 			13.0.0 					High 		TMM 
									12.0.0 
									11.4.0 - 11.6.1 
									11.2.1

BIG-IP AFM 			12.1.0 - 12.1.2 			13.0.0 					High 		TMM 
									12.0.0 
									11.4.0 - 11.6.1

BIG-IP Analytics 		12.1.0 - 12.1.2 			13.0.0 					High 		TMM 
									12.0.0 
									11.4.0 - 11.6.1 
									11.2.1

BIG-IP APM 			12.1.0 - 12.1.2 			13.0.0 					High 		TMM 
									12.0.0 
									11.4.0 - 11.6.1 
									11.2.1

BIG-IP ASM 			12.1.0 - 12.1.2 			13.0.0 					High 		TMM 
									12.0.0 
									11.4.0 - 11.6.1 
									11.2.1

BIG-IP DNS 			12.1.0 - 12.1.2 			13.0.0 					High 		TMM 
									12.0.0

BIG-IP Edge Gateway 		None 					11.2.1 					Not vulnerable1 None

BIG-IP GTM 			None 					11.4.0 - 11.6.1 		
									11.2.1 					Not vulnerable1 None

BIG-IP Link Controller 		12.1.0 - 12.1.2 			13.0.0 					High 		TMM 
									12.0.0 
									11.4.0 - 11.6.1
									11.2.1

BIG-IP PEM 			12.1.0 - 12.1.2 			13.0.0 					High 		TMM 
									12.0.0 
									11.4.0 - 11.6.1

BIG-IP PSM 			None 					11.4.0 - 11.4.1 			Not vulnerable1 None

BIG-IP WebAccelerator 		None 					11.2.1 					Not vulnerable1 None

BIG-IP WebSafe 			12.1.0 - 12.1.2 			13.0.0 					High 		TMM 
									12.0.0 
									11.6.0 - 11.6.1

ARX 				None 					6.2.0 - 6.4.0 				Not vulnerable 	None

Enterprise Manager 		None 					3.1.1 					Not vulnerable 	None

BIG-IQ Cloud 			None 					4.0.0 - 4.5.0 				Not vulnerable1 None

BIG-IQ Device 			None 					4.2.0 - 4.5.0 				Not vulnerable1 None

BIG-IQ Security 		None 					4.0.0 - 4.5.0 				Not vulnerable1 None

BIG-IQ ADC 			None 					4.5.0 					Not vulnerable1 None

BIG-IQ Centralized Management	None					5.0.0 - 5.1.0				Not vulnerable1 None
									4.6.0

BIG-IQ Cloud and Orchestration 	None 					1.0.0 					Not vulnerable1 None

F5 iWorkflow 			None 					2.0.0 - 2.0.2 				Not vulnerable1 None

LineRate 			None 					2.5.0 - 2.6.1 				Not vulnerable 	None

Traffix SDC 			None 					5.0.0 - 5.1.0				Not vulnerable None
									4.0.0 - 4.4.0 

1 The specified products contain the affected code. However, F5 identifies the
vulnerability status as Not vulnerable because the attacker cannot exploit the
code in default, standard, or recommended configurations.

Vulnerability Recommended Actions

If you are running a version listed in the Versions known to be vulnerable 
column, you can eliminate this vulnerability by upgrading to a version listed
in the Versions known to be not vulnerable column. If the table lists only an
older version than what you are currently running, or does not list a 
non-vulnerable version, then no upgrade candidate currently exists.

Mitigation

None

Supplemental Information

K9970: Subscribing to email notifications regarding F5 products

K9957: Creating a custom RSS feed to view new and updated documents

K4602: Overview of the F5 security vulnerability response policy

K4918: Overview of the F5 critical issue hotfix policy

K167: Downloading software and firmware from F5

K13123: Managing BIG-IP product hotfixes (11.x - 12.x)

K9502: BIG-IP hotfix matrix

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