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             AUSCERT External Security Bulletin Redistribution

               sol51440224: PCRE vulnerability CVE-2016-3191
                              13 October 2016


        AusCERT Security Bulletin Summary

Product:           F5 ARX
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Mitigation
CVE Names:         CVE-2016-3191  

Reference:         ESB-2016.1168

Original Bulletin: 

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sol51440224: PCRE vulnerability CVE-2016-3191

Security Advisory

Original Publication Date: 10/12/2016

Vulnerability Description

The compile_branch function in pcre_compile.c in PCRE 8.x before 8.39 and 
pcre2_compile.c in PCRE2 before 10.22 mishandles patterns containing an 
(*ACCEPT) substring in conjunction with nested parentheses, which allows 
remote attackers to execute arbitrary code or cause a denial of service 
(stack-based buffer overflow) via a crafted regular expression, as 
demonstrated by a JavaScript RegExp object encountered by Konqueror, aka 
ZDI-CAN-3542. (CVE-2016-3191)


This vulnerability may allow remote attackers to cause a denial-of-service 
(DoS) attack or have other unspecified impacts via a crafted regular 

Security Issue Status

F5 Product Development has assigned ID 541509 (ARX) 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 

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

ARX		6.2.0 - 6.4.0				None					Low		ARX GUI

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.


To mitigate this vulnerability, you should permit access to the ARX GUI only 
over a secure network.

Supplemental Information

SOL9970: Subscribing to email notifications regarding F5 products

SOL9957: Creating a custom RSS feed to view new and updated documents

SOL4602: Overview of the F5 security vulnerability response policy

SOL4918: Overview of the F5 critical issue hotfix policy

SOL167: Downloading software and firmware from F5

SOL12766: ARX hotfix matrix

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