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             AUSCERT External Security Bulletin Redistribution

              SOL08039035: MySQL vulnerability CVE-2015-4910
                             15 December 2015


        AusCERT Security Bulletin Summary

Product:           F5 Enterprise Manager
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Mitigation
CVE Names:         CVE-2015-4910  

Reference:         ASB-2015.0103

Original Bulletin: 

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SOL08039035: MySQL vulnerability CVE-2015-4910

Security Advisory

Original Publication Date: 12/14/2015

Vulnerability Description

Unspecified vulnerability in Oracle MySQL Server 5.6.26 and earlier allows 
remote authenticated users to affect availability via unknown vectors related
to Server : Memcached. (CVE-2015-4910)


This vulnerability may allow remote authenticated users to affect availability
by way of unknown vectors.

However, Enterprise Manager systems have default mitigations in place through
local user authentication requirements and iptables (EM 3.x) that downgrade 
the access vector for these vulnerabilities limited to local and authenticated

Security Issue Status

F5 Product Development has assigned ID 556684 (Enterprise Manager) 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 

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

Enterprise Manager 	3.0.0 - 3.1.1 		None 			Medium 		None

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.

To mitigate this vulnerability for Enterprise Manager, you should permit 
management access to F5 products only over a secure network and limit shell 
access to only trusted users. For more information, refer to SOL13309: 
Restricting access to the Configuration utility by source IP address (11.x - 
12.x) and SOL13092: Overview of securing access to the BIG-IP system.

Additionally, for Enterprise Manager, you should avoid enabling the Remote 
Access feature to provide remote access to the statistical database. If you 
have the Remote Access feature enabled, you should disable it by performing 
the following procedure:

Disabling the Remote Access feature

Impact of action: You will no longer be allowed to remotely access the MySQL 
statistical database.

1. Log in to the Enterprise Manager Configuration utility.

2. Click Enterprise Management.

3. Navigate to Options > Statistics > Remote Access.

4. Clear the Allow Remote Access check box.

5. Click Save Changes.

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

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