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HistoryNov 24, 2014 - 12:00 a.m.

[USN-2404-1] libvirt vulnerabilities

2014-11-2400:00:00
vulners.com
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Ubuntu Security Notice USN-2404-1
November 11, 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 versions:

Ubuntu 14.10:
libvirt-bin 1.2.8-0ubuntu11.1
libvirt0 1.2.8-0ubuntu11.1

Ubuntu 14.04 LTS:
libvirt-bin 1.2.2-0ubuntu13.1.7
libvirt0 1.2.2-0ubuntu13.1.7

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2404-1
CVE-2014-3657, CVE-2014-7823

Package Information:
https://launchpad.net/ubuntu/+source/libvirt/1.2.8-0ubuntu11.1
https://launchpad.net/ubuntu/+source/libvirt/1.2.2-0ubuntu13.1.7

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