CVE-2016-7777
low-risk
Published 2016-10-07
Xen 4.7.x and earlier does not properly honor CR0.TS and CR0.EM, which allows local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it.
Do I need to act?
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0.12% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.3/10
Medium
LOCAL
/ HIGH complexity
Affected Products (1)
Affected Vendors
References (10)
Third Party Advisory
http://www.securityfocus.com/bid/93344
Third Party Advisory
http://www.securitytracker.com/id/1036942
Mitigation
http://xenbits.xen.org/xsa/advisory-190.html
Third Party Advisory
http://www.securityfocus.com/bid/93344
Third Party Advisory
http://www.securitytracker.com/id/1036942
Mitigation
http://xenbits.xen.org/xsa/advisory-190.html
22
/ 100
low-risk
Severity
16/34 · Moderate
Exploitability
1/34 · Minimal
Exposure
5/34 · Minimal