Ubuntu Security Notice USN-2404-1
11th November, 2014
libvirt vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.10
- Ubuntu 14.04 LTS
Summary
Several security issues were fixed in libvirt.
Software description
- libvirt
– Libvirt virtualization toolkit
Details
Pavel Hrdina discovered that libvirt incorrectly handled locking when
processing the virConnectListAllDomains command. An attacker could use this
issue to cause libvirtd to hang, resulting in a denial of service.
(CVE-2014-3657)
Eric Blake discovered that libvirt incorrectly handled permissions when
processing the qemuDomainFormatXML command. An attacker with read-only
privileges could possibly use this to gain access to certain information
from the domain xml file. (CVE-2014-7823)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.10:
-
libvirt0
1.2.8-0ubuntu11.1
-
libvirt-bin
1.2.8-0ubuntu11.1
- Ubuntu 14.04 LTS:
-
libvirt0
1.2.2-0ubuntu13.1.7
-
libvirt-bin
1.2.2-0ubuntu13.1.7
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.