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KVM qemu-kvm Two Vulnerabilities

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Release Date:  2011-05-19    Last Update:  2011-07-05    Views:  2,224

Secunia Advisory SA44648

Where:

Local system

Impact:

Privilege escalation, DoS

Solution Status:

Vendor Workaround

CVE Reference(s):

Description


Two vulnerabilities have been reported in KVM qemu-kvm, which can be exploited by malicious, local users in a guest virtual machine to cause a DoS (Denial of Service) and gain escalated privileges.

1) A vulnerability is caused due to the PIIX4 emulation allowing to unplug non-hotpluggable PCI devices.

For more information:
SA44458

2) The VirtIO implementation does not properly validating VirtIO queue notifications.

For more information:
SA44458


Solution:
Fixed in the GIT repository.

Further details available to Secunia VIM customers

Original Advisory:
http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=commit;h=505597e4476a6bc219d0ec1362b760d71cb4fdca
http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=commitdiff;h=7157e2e23e89adcd436caeab31fdd6b47eded377

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: KVM qemu-kvm Two Vulnerabilities

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