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             AUSCERT External Security Bulletin Redistribution

            sol16479: Linux kernel vulnerability CVE-2009-4537
                               23 April 2015


        AusCERT Security Bulletin Summary

Product:           F5 products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2009-4537 CVE-2009-1389 

Reference:         ASB-2010.0030

Original Bulletin: 

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sol16479: Linux kernel vulnerability CVE-2009-4537

Security Advisory

Original Publication Date: 04/22/2015


drivers/net/r8169.c in the r8169 driver in the Linux kernel and 
earlier does not properly check the size of an Ethernet frame that exceeds the
MTU, which allows remote attackers to (1) cause a denial of service (temporary
network outage) via a packet with a crafted size, in conjunction with certain
packets containing A characters and certain packets containing E characters; 
or (2) cause a denial of service (system crash) via a packet with a crafted 
size, in conjunction with certain packets containing '\0' characters, related
to the value of the status register and erroneous behavior associated with the
RxMaxSize register. NOTE: this vulnerability exists because of an incorrect 
fix for CVE-2009-1389. (CVE-2009-4537)


Remote attackers may be able to cause a denial-of-service (temporary network 
outage) via a packet with a crafted size.


F5 Product Development has assigned ID 511077 (BIG-IP) and ID 461496 (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 be vulnerable 	Versions known to be not vulnerable 	Severity 	Vulnerable component or feature

BIG-IP LTM 	10.0.0 - 10.2.4				11.0.0 - 11.6.0				High 		Linux kernel

BIG-IP APM 	10.1.0 - 10.2.4				11.0.0 - 11.6.0				High 		Linux kernel

BIG-IP ASM 	10.0.0 - 10.2.4				11.0.0 - 11.6.0				High 		Linux kernel

BIG-IP Edge 
Gateway		10.1.0 - 10.2.4				11.0.0 - 11.3.0				High 		Linux kernel

BIG-IP GTM 	10.0.0 - 10.2.4				11.0.0 - 11.6.0				High 		Linux kernel

BIG-IP Link 
Controller 	10.0.0 - 10.2.4				11.0.0 - 11.6.0				High 		Linux kernel

BIG-IP PSM 	10.0.0 - 10.2.4				11.0.0 - 11.4.1				High 		Linux kernel

WebAccelerator 	10.0.0 - 10.2.4				11.0.0 - 11.3.0				High 		Linux kernel

BIG-IP WOM 	10.0.0 - 10.2.4				11.0.0 - 11.3.0				High 		Linux kernel

ARX 		6.0.0 - 6.4.0				None					High 		Linux kernel

Manager 	2.1.0 - 2.3.0				3.0.0 - 3.1.1				High 		Linux kernel

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 only permit management access to F5
products over a secure network and limit shell access to trusted users. For 
more information, 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)

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