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Debian Security Advisory DSA 4137-1 (libvirt - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Several vulnerabilities were discovered in Libvirt, a virtualisation abstraction library: CVE-2018-1064 Daniel Berrange discovered that the QEMU guest agent performed insufficient validation of incoming data, which allows a privileged user in the guest to exhaust resources on the virtualisation host, resulting in denial of service. CVE-2018-5748 Daniel Berrange and Peter Krempa that the QEMU monitor was suspectible to denial of service by memory exhaustion. This was already fixed in Debian stretch and only affects Debian jessie. CVE-2018-6764 Pedro Sampaio discovered that LXC containers detected the hostname insecurely. This only affects Debian stretch.
Affected Software
Affected Software
libvirt on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the oldstable distribution (jessie), these problems have been fixed in version 1.2.9-9+deb8u5. For the stable distribution (stretch), these problems have been fixed in version 3.0.0-4+deb9u3. We recommend that you upgrade your libvirt packages. For the detailed security status of libvirt please refer to its security tracker page linked in the references.