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11 September 2015

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             AUSCERT External Security Bulletin Redistribution

               SOL17251: Apache vulnerability CVE-2015-3183
                             11 September 2015


        AusCERT Security Bulletin Summary

Product:           F5 products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Provide Misleading Information -- Remote/Unauthenticated
Resolution:        Mitigation
CVE Names:         CVE-2015-3183  

Reference:         ASB-2015.0086

Original Bulletin: 

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SOL17251: Apache vulnerability CVE-2015-3183

Security Advisory

Original Publication Date: 09/09/2015


The chunked transfer coding implementation in the Apache HTTP Server before 
2.4.14 does not properly parse chunk headers, which allows remote attackers to
conduct HTTP request smuggling attacks via a crafted request, related to 
mishandling of large chunk-size values and invalid chunk-extension characters
in modules/http/http_filters.c. (CVE-2015-3183)


An attacker with access to the plaintext data of a connection to the BIG-IP 
control plane may be able to exploit a flaw in Apache to partially impact the
integrity of a session.

Note: All connections to the BIG-IP Configuration utility are encrypted with 
SSL/TLS, so an attacker would need to be able to decrypt the cipher text and 
obtain the plaintext before launching this attack.


F5 Product Development has assigned ID 537255 (BIG-IP), ID 538018 (BIG-IQ), ID
538016 (Enterprise Manager), and ID 431234 (ARX) 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

BIG-IP LTM 		12.0.0			None			Low 		Apache
			11.0.0 - 11.6.0
			10.1.0 - 10.2.4		

BIG-IP AAM 		12.0.0
			11.4.0 - 11.6.0		None			Low 		Apache

BIG-IP AFM 		12.0.0
			11.3.0 - 11.6.0		None			Low 		Apache

BIG-IP Analytics 	12.0.0
			11.0.0 - 11.6.0		None			Low 		Apache

BIG-IP APM 		12.0.0			None			Low 		Apache
			11.0.0 - 11.6.0
			10.1.0 - 10.2.4

BIG-IP ASM 		12.0.0			None			Low 		Apache
			11.0.0 - 11.6.0
			10.1.0 - 10.2.4

BIG-IP DNS		12.0.0			None			Low 		Apache

BIG-IP Edge Gateway	11.0.0 - 11.3.0
			10.1.0 - 10.2.4		None			Low 		Apache

BIG-IP GTM 		11.0.0 - 11.6.0
			10.1.0 - 10.2.4		None			Low 		Apache

BIG-IP Link Controller 	12.0.0			None			Low 		Apache
			11.0.0 - 11.6.0
			10.1.0 - 10.2.4

BIG-IP PEM 		12.0.0
			11.3.0 - 11.6.0		None			Low 		Apache

BIG-IP PSM 		11.0.0 - 11.4.1
			10.1.0 - 10.2.4		None			Low 		Apache

BIG-IP WebAccelerator 	11.0.0 - 11.3.0
			10.1.0 - 10.2.4		None			Low 		Apache

BIG-IP WOM 		11.0.0 - 11.3.0
			10.1.0 - 10.2.4		None			Low 		Apache

ARX 			6.0.0 - 6.4.0		None			Low 		Apache
Enterprise Manager 	3.0.0 - 3.1.1		None 			Low 		Apache

FirePass 		None			7.0.0
						6.0.0 - 6.1.0		Not vulnerable 	None

BIG-IQ Cloud 		4.0.0 - 4.5.0		None			Low 		Apache

BIG-IQ Device 		4.2.0 - 4.5.0		None			Low 		Apache

BIG-IQ Security 	4.0.0 - 4.5.0		None			Low 		Apache

BIG-IQ ADC 		4.5.0			None			Low 		Apache

LineRate 		None			2.5.0 - 2.6.1		Not vulnerable 	None

F5 WebSafe 		None			1.0.0			Not vulnerable 	None

Traffix SDC 		None			4.0.0 - 4.4.0
						3.3.2 - 3.5.1		Not vulnerable 	None

Note: As of February 17, 2015, AskF5 Security Advisory articles include the 
Severity value. Security Advisory articles published before this date do not 
list a Severity value.

Recommended Action

If the previous table lists a version in the Versions known to be not 
vulnerable column, you can eliminate this vulnerability by upgrading to the 
listed version. If the listed version is older than the version you are 
currently running, or if the table does not list any version in the column, 
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, you should permit management access to F5 
products only over a secure network and limit shell access to trusted users. 
For more information about securing access to BIG-IP and Enterprise Manager 
systems, refer to SOL13309: Restricting access to the Configuration utility by
source IP address (11.x) and SOL13092: Overview of securing access to the 
BIG-IP system.

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)

SOL10025: Managing BIG-IP product hotfixes (10.x)

SOL9502: BIG-IP hotfix matrix

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