Bastian Blank discovered that libvirtd, a daemon for management of virtual machines, network and storage, would change ownership of devices files so they would be owned by user `libvirt-qemu` and group `kvm`, which is a general purpose group not specific to libvirt, allowing unintended write access to

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Debian Security Advisory DSA-2650-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.debian.org/security/                         Yves-Alexis Perez
March 15, 2013                         http://www.debian.org/security/faq
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Package        : libvirt-bin
Vulnerability  : files and device nodes ownership change to kvm group
Problem type   : local
Debian-specific: yes
CVE ID         : CVE-2013-1766
Debian Bug     : 701649

Bastian Blank discovered that libvirtd, a daemon for management of virtual
machines, network and storage, would change ownership of devices files so they
would be owned by user `libvirt-qemu` and group `kvm`, which is a general
purpose group not specific to libvirt, allowing unintended write access to
those devices and files for the kvm group members.

For the stable distribution (squeeze), this problem has been fixed in
version 0.8.3-5+squeeze4.

For the testing distribution (wheezy), this problem has been fixed in
version 0.9.12-11.

For the unstable distribution (sid), this problem has been fixed in
version 0.9.12-11.

We recommend that you upgrade your libvirt-bin packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

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