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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2015.1407
                sol16620: QEMU vulnerability CVE-2015-3456
                                28 May 2015

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           F5 products
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Denial of Service               -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-3456  

Reference:         ESB-2015.1319
                   ESB-2015.1308
                   ESB-2015.1307
                   ESB-2015.1306
                   ESB-2015.1304

Original Bulletin: 
   https://support.f5.com/kb/en-us/solutions/public/16000/600/sol16620.html

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sol16620: QEMU vulnerability CVE-2015-3456

Security Advisory

Original Publication Date: 05/13/2015

Updated Date: 05/20/2015

Description

An out-of-bounds memory access flaw, also known as "VENOM," was found in the 
way QEMU's virtual Floppy Disk Controller (FDC) handled FIFO buffer access 
while processing certain FDC commands. A privileged guest user could use this
flaw to crash the guest or, potentially, execute arbitrary code on the host 
with the privileges of the host's QEMU process corresponding to the guest. 
(CVE-2015-3456)

Impact

This vulnerability may allow unauthorized modification or disruption of 
service. F5 products are subject to this vulnerability only when configured as
a vCMP hypervisor host. A vCMP guest itself is not vulnerable, but a user with
root or administrator-level permissions within a configured vCMP guest is 
required for the attack. BIG-IP Virtual Edition and non-vCMP deployments of 
the BIG-IP system are not impacted.

Important: A third party KVM hypervisor on which a BIG-IP Virtual Edition 
guest instance is installed might be vulnerable; however, the BIG-IP Virtual 
Edition guest instance itself is not vulnerable. Customers in this deployment
model need to check with the provider of their KVM hypervisor for details on 
their specific status.

Status

F5 Product Development has assigned ID 523032 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 		11.0.0 - 11.6.0 			10.1.0 - 10.2.4 [1] 			Severe 		vCMP Host Hypervisor (qemu-kvm)

BIG-IP AAM 		11.4.0 - 11.6.0 			None 					Severe 		vCMP Host Hypervisor (qemu-kvm)

BIG-IP AFM 		11.3.0 - 11.6.0 			None 					Severe 		vCMP Host Hypervisor (qemu-kvm)

BIG-IP Analytics 	11.0.0 - 11.6.0 			None 					Severe 		vCMP Host Hypervisor (qemu-kvm)

BIG-IP APM 		11.0.0 - 11.6.0 			10.1.0 - 10.2.4 [1] 			Severe 		vCMP Host Hypervisor (qemu-kvm)

BIG-IP ASM 		11.0.0 - 11.6.0 			10.1.0 - 10.2.4 [1] 			Severe 		vCMP Host Hypervisor (qemu-kvm)

BIG-IP Edge Gateway 	11.0.0 - 11.3.0 			10.1.0 - 10.2.4 [1] 			Severe 		vCMP Host Hypervisor (qemu-kvm)

BIG-IP GTM 		11.0.0 - 11.6.0 			10.1.0 - 10.2.4 [1] 			Severe 		vCMP Host Hypervisor (qemu-kvm)

BIG-IP Link Controller 	11.0.0 - 11.6.0 			10.1.0 - 10.2.4 [1] 			Severe 		vCMP Host Hypervisor (qemu-kvm)

BIG-IP PEM 		11.3.0 - 11.6.0 			None 					Severe 		vCMP Host Hypervisor (qemu-kvm)

BIG-IP PSM 		11.0.0 - 11.4.1 			10.1.0 - 10.2.4 [1] 			Severe		vCMP Host Hypervisor (qemu-kvm)

BIG-IP WebAccelerator 	11.0.0 - 11.3.0 			10.1.0 - 10.2.4 [1] 			Severe 		vCMP Host Hypervisor (qemu-kvm)

BIG-IP WOM 		11.0.0 - 11.3.0 			10.1.0 - 10.2.4 [1] 			Severe 		vCMP Host Hypervisor (qemu-kvm)

[1] vCMP is not available on BIG-IP versions prior to 11.0.0.

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.

Supplemental Information

    SOL14088: vCMP host and supported guest version matrix

    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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