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CVE-2016-9386

Date: January 23, 2017

The x86 emulator in Xen does not properly treat x86 NULL segments as unusable when accessing memory, which might allow local HVM guest users to gain privileges via vectors involving "unexpected" base/limit values.

Language: C

Severity Score

Related Resources (9)

https://access.redhat.com/security/cve/CVE-2016-9386
https://support.citrix.com/article/CTX218775
http://xenbits.xen.org/xsa/advisory-191.html
https://security-tracker.debian.org/tracker/CVE-2016-9386
http://www.securitytracker.com/id/1037340
https://nvd.nist.gov/vuln/detail/CVE-2016-9386
https://security.gentoo.org/glsa/201612-56
http://www.securityfocus.com/bid/94471
https://www.mend.io/vulnerability-database/CVE-2016-9386

Severity Score

Weakness Type (CWE)

Permissions, Privileges, and Access Control

CWE-264

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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