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AUSCERT External Security Bulletin Redistribution
ESB-2018.0014.4
K70938105: Expat XML library vulnerability CVE-2016-5300
24 July 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: F5 BIG-IP Products
Publisher: F5 Networks
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-5300 CVE-2012-0876
Reference: ASB-2016.0120
ASB-2016.0103
ESB-2012.1093
ESB-2012.0742
ESB-2012.0552
Original Bulletin:
https://support.f5.com/csp/article/K70938105
Revision History: July 24 2018: Updated security advisory status table.
June 19 2018: Updated security advisory status table.
March 5 2018: Bulletin updated
January 2 2018: Initial Release
- --------------------------BEGIN INCLUDED TEXT--------------------
K70938105: Expat XML library vulnerability CVE-2016-5300
Security Advisory
Original Publication Date: Oct 27, 2016
Updated Date: Jul 24, 2018
Security Advisory Description
The XML parser in Expat does not use sufficient entropy for hash
initialization, which allows context-dependent attackers to cause a denial of
service (CPU consumption) via crafted identifiers in an XML document. NOTE:
this vulnerability exists because of an incomplete fix for CVE-2012-0876. (
CVE-2016-5300)
Impact
An attacker may be able to cause a denial-of-service (DoS) attack by way
of crafted identifiers in an XML document.
Security Advisory Status
F5 Product Development has assigned ID 617273 (BIG-IP), ID 617964 (BIG-IQ/F5
iWorkflow), ID 618243 (Enterprise Manager), and ID 528541 (ARX) to this
vulnerability. Additionally, BIG-IP iHealth may list Heuristic H624219 on the
Diagnostics > Identified > Medium page.
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.
+---------------+----------------+-----------------+----------+----------------+
| |Versions known |Versions known to| |Vulnerable |
|Product |to be vulnerable|be not vulnerable|Severity |component or |
| | | | |feature |
+---------------+----------------+-----------------+----------+----------------+
| | |13.1.0 | | |
| |13.0.0 |13.0.1 | | |
| |12.0.0 - 12.1.3 |12.1.3.2 | |XML parser Expat|
|BIG-IP LTM |11.6.1 - 11.6.3 |11.6.3.2 |Medium |library |
| |11.4.0 - 11.5.6 |11.5.7 | | |
| | |11.2.1 | | |
| | |10.2.1 - 10.2.4 | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 |13.1.0 | | |
| |12.0.0 - 12.1.3 |13.0.1 | |XML parser Expat|
|BIG-IP AAM |11.6.1 - 11.6.3 |12.1.3.2 |Medium |library |
| |11.4.0 - 11.5.6 |11.6.3.2 | | |
| | |11.5.7 | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 |13.1.0 | | |
| |12.0.0 - 12.1.3 |13.0.1 | |XML parser Expat|
|BIG-IP AFM |11.6.1 - 11.6.3 |12.1.3.2 |Medium |library |
| |11.4.0 - 11.5.6 |11.6.3.2 | | |
| | |11.5.7 | | |
+---------------+----------------+-----------------+----------+----------------+
| | |13.1.0 | | |
| |13.0.0 |13.0.1 | | |
|BIG-IP |12.0.0 - 12.1.3 |12.1.3.2 |Medium |XML parser Expat|
|Analytics |11.6.1 - 11.6.3 |11.6.3.2 | |library |
| |11.4.0 - 11.5.6 |11.5.7 | | |
| | |11.2.1 | | |
+---------------+----------------+-----------------+----------+----------------+
| | |13.1.0 | | |
| |13.0.0 |13.0.1 | | |
| |12.0.0 - 12.1.3 |12.1.3.2 | |XML parser Expat|
|BIG-IP APM |11.6.1 - 11.6.3 |11.6.3.2 |Medium |library |
| |11.4.0 - 11.5.6 |11.5.7 | | |
| | |11.2.1 | | |
| | |10.2.1 - 10.2.4 | | |
+---------------+----------------+-----------------+----------+----------------+
| | |13.1.0 | | |
| |13.0.0 |13.0.1 | | |
| |12.0.0 - 12.1.3 |12.1.3.2 | |XML parser Expat|
|BIG-IP ASM |11.6.1 - 11.6.3 |11.6.3.2 |Medium |library |
| |11.4.0 - 11.5.6 |11.5.7 | | |
| | |11.2.1 | | |
| | |10.2.1 - 10.2.4 | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 |13.1.0 | |XML parser Expat|
|BIG-IP DNS |12.0.0 - 12.1.3 |13.0.1 |Medium |library |
| | |12.1.3.2 | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP Edge |None |11.2.1 |Not |None |
|Gateway | |10.2.1 - 10.2.4 |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
| | |11.6.3.2 | | |
|BIG-IP GTM |11.6.1 - 11.6.3 |11.5.7 |Medium |XML parser Expat|
| |11.4.0 - 11.5.6 |11.2.1 | |library |
| | |10.2.1 - 10.2.4 | | |
+---------------+----------------+-----------------+----------+----------------+
| | |13.1.0 | | |
| |13.0.0 |13.0.1 | | |
|BIG-IP Link |12.0.0 - 12.1.3 |12.1.3.2 | |XML parser Expat|
|Controller |11.6.1 - 11.6.3 |11.6.3.2 |Medium |library |
| |11.4.0 - 11.5.6 |11.5.7 | | |
| | |11.2.1 | | |
| | |10.2.1 - 10.2.4 | | |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 |13.1.0 | | |
| |12.0.0 - 12.1.3 |13.0.1 | |XML parser Expat|
|BIG-IP PEM |11.6.1 - 11.6.3 |12.1.3.2 |Medium |library |
| |11.4.0 - 11.5.6 |11.6.3.2 | | |
| | |11.5.7 | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP PSM |11.4.0 - 11.4.1 |10.2.1 - 10.2.4 |Medium |XML parser Expat|
| | | | |library |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IP |None |11.2.1 |Not |None |
|WebAccelerator | |10.2.1 - 10.2.4 |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
| |13.0.0 |13.1.0 |Medium |XML parser Expat|
|BIG-IP WebSafe |12.0.0 - 12.1.3 |13.0.1 | |library |
| |11.6.0 - 11.6.3 |12.1.3.2 | | |
+---------------+----------------+-----------------+----------+----------------+
|ARX |6.2.0 - 6.4.0 |None |Low |XML parser Expat|
| | | | |library |
+---------------+----------------+-----------------+----------+----------------+
|Enterprise |3.1.1 |None |Medium |XML parser Expat|
|Manager | | | |library |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud |4.0.0 - 4.5.0 |None |Medium |XML parser Expat|
| | | | |library |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Device |4.2.0 - 4.5.0 |None |Medium |XML parser Expat|
| | | | |library |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Security|4.0.0 - 4.5.0 |None |Medium |XML parser Expat|
| | | | |library |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ ADC |4.5.0 |None |Medium |XML parser Expat|
| | | | |library |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ |5.0.0 - 5.4.0 | | |XML parser Expat|
|Centralized |4.6.0 |None |Medium |library |
|Management | | | | |
+---------------+----------------+-----------------+----------+----------------+
|BIG-IQ Cloud | | | |XML parser Expat|
|and |1.0.0 |None |Medium |library |
|Orchestration | | | | |
+---------------+----------------+-----------------+----------+----------------+
|F5 iWorkflow |2.0.0 - 2.3.0 |None |Medium |XML parser Expat|
| | | | |library |
+---------------+----------------+-----------------+----------+----------------+
|LineRate |None |2.5.0 - 2.6.1 |Not |None |
| | | |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
|Traffix SDC |None |5.0.0 |Not |None |
| | |4.0.0 - 4.4.0 |vulnerable| |
+---------------+----------------+-----------------+----------+----------------+
Security Advisory 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
o K21232150: Considerations for upgrading BIG-IQ or F5 iWorkflow systems.
o K9970: Subscribing to email notifications regarding F5 products
o K9957: Creating a custom RSS feed to view new and updated documents
o K4602: Overview of the F5 security vulnerability response policy
o K4918: Overview of the F5 critical issue hotfix policy
o K167: Downloading software and firmware from F5
o K13123: Managing BIG-IP product hotfixes (11.x - 13.x)
o K9502: BIG-IP hotfix and point release matrix
o K15106: Managing BIG-IQ product hotfixes
o K15113: BIG-IQ hotfix matrix
o K12766: ARX hotfix matrix
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