The MITRE CVE dictionary describes this issue as:
Use-after-free vulnerability in the virNetMessageFree function in rpc/virnetserverclient.c in libvirt 1.0.x before 1.0.2, 0.10.2 before 0.10.2.3, 0.9.11 before 0.9.11.9, and 0.9.6 before 0.9.6.4 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code by triggering certain errors during an RPC connection, which causes a message to be freed without being removed from the message queue.
Find out more about CVE-2013-0170 from the
MITRE CVE dictionary dictionary and
Not vulnerable. This issue did not affect the versions of libvirt as shipped with Red Hat Enterprise Linux 5.