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AUSCERT External Security Bulletin Redistribution
ESB-2016.1306
SOL35240323: PHP Vulnerability CVE-2016-4539
24 May 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: F5 BIG-IP products
F5 Enterprise Manager
F5 BIG-IQ products
Publisher: F5 Networks
Operating System: Network Appliance
Virtualisation
Impact/Access: Denial of Service -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2016-4539
Original Bulletin:
https://support.f5.com/kb/en-us/solutions/public/k/35/sol35240323.html
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SOL35240323: PHP Vulnerability CVE-2016-4539
Security Advisory
Original Publication Date: 05/23/2016
Vulnerability Description
The xml_parse_into_struct function in ext/xml/xml.c in PHP before 5.5.35,
5.6.x before 5.6.21, and 7.x before 7.0.6 allows remote attackers to cause a
denial of service (buffer under-read and segmentation fault) or possibly have
unspecified other impact via crafted XML data in the second argument, leading
to a parser level of zero. (CVE-2016-4539)
Impact
In default configurations, F5 products are not vulnerable. Versions listed as
vulnerable include vulnerable code, but the code is not used in standard
configurations.
Security Issue Status
F5 Product Development has assigned ID 594496 (BIG-IP) and ID 594590 (EM and
BIG-IQ) to this vulnerability, and has evaluated the currently supported
releases for potential 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 12.0.0 - 12.1.0 None Medium PHP *
11.0.0 - 11.6.1
10.1.0 - 10.2.4
BIG-IP AAM 12.0.0 - 12.1.0 None Medium PHP *
11.4.0 - 11.6.1
BIG-IP AFM 12.0.0 - 12.1.0 None Medium PHP *
11.3.0 - 11.6.1
BIG-IP Analytics 12.0.0 - 12.1.0 None Medium PHP *
11.0.0 - 11.6.1
BIG-IP APM 12.0.0 - 12.1.0 None Medium PHP *
11.0.0 - 11.6.1
10.1.0 - 10.2.4
BIG-IP ASM 12.0.0 - 12.1.0 None Medium PHP *
11.0.0 - 11.6.1
10.1.0 - 10.2.4
BIG-IP DNS 12.0.0 - 12.1.0 None Medium PHP *
BIG-IP Edge Gateway 11.0.0 - 11.3.0 None Medium PHP *
10.1.0 - 10.2.4
BIG-IP GTM 11.0.0 - 11.6.1 None Medium PHP *
10.1.0 - 10.2.4
BIG-IP Link Controller 12.0.0 - 12.1.0 None Medium PHP *
11.0.0 - 11.6.1
10.1.0 - 10.2.4
BIG-IP PEM 12.0.0 - 12.1.0 None Medium PHP *
11.3.0 - 11.6.1
BIG-IP PSM 11.0.0 - 11.4.1 None Medium PHP *
10.1.0 - 10.2.4
BIG-IP WebAccelerator 11.0.0 - 11.3.0 None Medium PHP *
10.1.0 - 10.2.4
BIG-IP WOM 11.0.0 - 11.3.0 None Medium PHP *
10.1.0 - 10.2.4
ARX None 6.0.0 - 6.4.0 Not vulnerable None
Enterprise Manager 3.0.0 - 3.1.1 None Low PHP
FirePass None 7.0.0 Not vulnerable None
6.0.0 - 6.1.0
BIG-IQ Cloud 4.0.0 - 4.5.0 None Low PHP
BIG-IQ Device 4.2.0 - 4.5.0 None Low PHP
BIG-IQ Security 4.0.0 - 4.5.0 None Low PHP
BIG-IQ ADC 4.5.0 None Low PHP
BIG-IQ Centralized 4.6.0 None Low PHP
Management
BIG-IQ Cloud and 1.0.0 None Low PHP
Orchestration
LineRate None 2.5.0 - 2.6.1 Not vulnerable None
F5 MobileSafe None 1.0.0 Not vulnerable None
F5 WebSafe None 1.0.0 Not vulnerable None
Traffix SDC None 5.0.0 Not vulnerable None
4.0.0 - 4.4.0
3.3.2 - 3.5.1
* May only be exploited if an external EAV monitor uses the vulnerable
function. Standard F5-supplied monitors are not vulnerable. EAV monitors that
do not use the vulnerable PHP functions are not vulnerable.
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.
F5 responds to vulnerabilities in accordance with the Severity values
published in the previous table. The Severity values and other security
vulnerability parameters are defined in SOL4602: Overview of the F5 security
vulnerability response policy.
Supplemental Information
SOL9970: Subscribing to email notifications regarding F5 products
SOL9957: Creating a custom RSS feed to view new and updated documents
SOL4918: Overview of the F5 critical issue hotfix policy
SOL167: Downloading software and firmware from F5
SOL13123: Managing BIG-IP product hotfixes (11.x - 12.x)
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