New! Vulnerability Priority Rating (VPR)
Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.
VPR Score: 4
Synopsis
The remote Fedora host is missing a security update.
Description
A guest can block a cpu by setting a bad VCPU deadline [XSA 20, CVE-2012-4535] (#876198) HVM guest can use invalid pirq values to crash xen [XSA 21, CVE-2012-4536] (#876200) HVM guest can exhaust p2m table crashing xen [XSA 22, CVE-2012-4537] (#876203) PAE HVM guest can crash hypervisor [XSA-23, CVE-2012-4538] (#876205) 32-bit PV guest on 64-bit hypervisor can cause an hypervisor infinite loop [XSA-24, CVE-2012-4539] (#876207)
Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Update the affected xen package.