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CVE-2013-1766

Publication date 20 March 2013

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

libvirt 1.0.2 and earlier sets the group owner to kvm for device files, which allows local users to write to these files via unspecified vectors.

Read the notes from the security team

Status

Package Ubuntu Release Status
libvirt 12.10 quantal Ignored
12.04 LTS precise Ignored
11.10 oneiric Ignored
10.04 LTS lucid
Not affected
8.04 LTS hardy Ignored end of life

Notes

jdstrand

Debian bug reports states this is a problem because the kvm group is a general-purpose group and therefore changing device group ownership exposes these devices to other groups on the system. The kvm group on Ubuntu has been used since Ubuntu 10.10. Debian's solution is to update the packaging to add a new libvirt-qemu groupi, have the libvirt-qemu user be in the libvirt-qemu group as a secondary group, then use as a configure option: --with-qemu-group=libvirt-qemu. This is too intrusive for a stable release for an arguably marginal security gain.