High severity · published Sep 21, 2016
CVE-2016-7093
Xen 4.5.3, 4.6.3, and 4.7.x allow local HVM guest OS administrators to overwrite hypervisor memory and consequently gain host OS privileges by leveraging mishandling of…
8.2
CVSS
0.4%
EPSS
No
On KEV
Description
Xen 4.5.3, 4.6.3, and 4.7.x allow local HVM guest OS administrators to overwrite hypervisor memory and consequently gain host OS privileges by leveraging mishandling of instruction pointer truncation during emulation.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
Xen · Xen
4.5.3; 4.6.3; 4.7.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-7093
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-7093
Third Party Advisory
http://support.citrix.com/article/CTX216071
www.securityfocus.com
http://www.securityfocus.com/bid/92865
Third Party Advisory
http://www.securitytracker.com/id/1036752
Patch
http://xenbits.xen.org/xsa/advisory-186.html
Patch
http://xenbits.xen.org/xsa/xsa186-0001-x86-emulate-Correct-boundary-interactions-of-emulate.patch
security.gentoo.org
https://security.gentoo.org/glsa/201611-09
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