The Simple Protocol for Independent Computing Environments (SPICE) is aremote display protocol used in Red Hat Enterprise Linux for viewingvirtualized guests running on the Kernel-based Virtual Machine (KVM)hypervisor, or on Red Hat Enterprise Virtualization Hypervisor.The spice-xpi package provides a plug-in that allows the SPICE client torun from within Mozilla Firefox.An uninitialized pointer use flaw was found in the SPICE Firefox plug-in.If a user were tricked into visiting a malicious web page with Firefoxwhile the SPICE plug-in was enabled, it could cause Firefox to crash or,possibly, execute arbitrary code with the privileges of the user runningFirefox. (CVE-2011-1179)It was found that the SPICE Firefox plug-in used a predictable name for oneof its log files. A local attacker could use this flaw to conduct asymbolic link attack, allowing them to overwrite arbitrary files accessibleto the user running Firefox. (CVE-2011-0012)Users of spice-xpi should upgrade to this updated package, which containsbackported patches to correct these issues. After installing the update,Firefox must be restarted for the changes to take effect.