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AUSCERT External Security Bulletin Redistribution
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
CVE Names: CVE-2015-3456
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sol16620: QEMU vulnerability CVE-2015-3456
Original Publication Date: 05/13/2015
Updated Date: 05/20/2015
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.
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.
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
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  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  Severe vCMP Host Hypervisor (qemu-kvm)
BIG-IP ASM 11.0.0 - 11.6.0 10.1.0 - 10.2.4  Severe vCMP Host Hypervisor (qemu-kvm)
BIG-IP Edge Gateway 11.0.0 - 11.3.0 10.1.0 - 10.2.4  Severe vCMP Host Hypervisor (qemu-kvm)
BIG-IP GTM 11.0.0 - 11.6.0 10.1.0 - 10.2.4  Severe vCMP Host Hypervisor (qemu-kvm)
BIG-IP Link Controller 11.0.0 - 11.6.0 10.1.0 - 10.2.4  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  Severe vCMP Host Hypervisor (qemu-kvm)
BIG-IP WebAccelerator 11.0.0 - 11.3.0 10.1.0 - 10.2.4  Severe vCMP Host Hypervisor (qemu-kvm)
BIG-IP WOM 11.0.0 - 11.3.0 10.1.0 - 10.2.4  Severe vCMP Host Hypervisor (qemu-kvm)
 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.
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.
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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