Ubuntu Security Notice USN-2366-1
30th September, 2014
libvirt vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Summary
Several security issues were fixed in libvirt.
Software description
- libvirt
– Libvirt virtualization toolkit
Details
Daniel P. Berrange and Richard Jones discovered that libvirt incorrectly
handled XML documents containing XML external entity declarations. An
attacker could use this issue to cause libvirtd to crash, resulting in a
denial of service on all affected releases, or possibly read arbitrary
files if fine grained access control was enabled on Ubuntu 14.04 LTS.
(CVE-2014-0179, CVE-2014-5177)
Luyao Huang discovered that libvirt incorrectly handled certain blkiotune
queries. An attacker could use this issue to cause libvirtd to crash,
resulting in a denial of service. This issue only applied to Ubuntu 12.04
LTS and Ubuntu 14.04 LTS. (CVE-2014-3633)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.04 LTS:
-
libvirt0
1.2.2-0ubuntu13.1.5
-
libvirt-bin
1.2.2-0ubuntu13.1.5
- Ubuntu 12.04 LTS:
-
libvirt0
0.9.8-2ubuntu17.20
-
libvirt-bin
0.9.8-2ubuntu17.20
- Ubuntu 10.04 LTS:
-
libvirt0
0.7.5-5ubuntu27.25
-
libvirt-bin
0.7.5-5ubuntu27.25
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.