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Ubuntu Security Notice USN-1522-1
August 02, 2012

qemu-kvm vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 12.04 LTS
• Ubuntu 11.10
• Ubuntu 11.04
• Ubuntu 10.04 LTS

Summary:

QEMU could be made to overwrite files as the administrator, or expose
sensitive information.

Software Description:

• qemu-kvm: Machine emulator and virtualizer

Details:

It was discovered that QEMU incorrectly handled temporary files when
creating a snapshot. A local attacker could use this flaw to possibly
overwrite files with root privilege, or obtain sensitive information from
the guest.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 LTS:
qemu-kvm 1.0+noroms-0ubuntu14.1

Ubuntu 11.10:
qemu-kvm 0.14.1+noroms-0ubuntu6.4

Ubuntu 11.04:
qemu-kvm 0.14.0+noroms-0ubuntu4.6

Ubuntu 10.04 LTS:
qemu-kvm 0.12.3+noroms-0ubuntu9.19

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1522-1
CVE-2012-2652

Package Information:
https://launchpad.net/ubuntu/+source/qemu-kvm/1.0+noroms-0ubuntu14.1
https://launchpad.net/ubuntu/+source/qemu-kvm/0.14.1+noroms-0ubuntu6.4
https://launchpad.net/ubuntu/+source/qemu-kvm/0.14.0+noroms-0ubuntu4.6
https://launchpad.net/ubuntu/+source/qemu-kvm/0.12.3+noroms-0ubuntu9.19

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