Ubuntu 12.04 LTS USN-1522-1 Moderate: QEMU File Overwrite Risk

ubuntu

August 2, 2012

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

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.

Topics Covered

security advisory moderate file overwrite system update information exposure ubuntu qemu

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.