The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade Ubuntu:13.04
xen
to version 4.2.2-0ubuntu0.13.04.2 or higher.
Note: Versions mentioned in the description apply only to the upstream xen
package and not the xen
package as distributed by Ubuntu
.
See How to fix?
for Ubuntu:13.04
relevant fixed versions and status.
The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.