CVE-2016-7093

Severity

72%

Complexity

39%

Confidentiality

165%

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.

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 3.0 Base Score 8.2. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.2. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C).

Overview

Type

Xen

First reported 8 years ago

2016-09-21 14:25:00

Last updated 7 years ago

2017-07-01 01:30:00

Affected Software

Xen 4.5.3

4.5.3

Xen 4.6.3

4.6.3

Xen 4.7.0

4.7.0

References

http://support.citrix.com/article/CTX216071

Third Party Advisory

92865

1036752

Third Party Advisory, VDB Entry

http://xenbits.xen.org/xsa/advisory-186.html

Patch, Vendor Advisory

http://xenbits.xen.org/xsa/xsa186-0001-x86-emulate-Correct-boundary-interactions-of-emulate.patch

Patch, Vendor Advisory

GLSA-201611-09

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