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ubuntucveUbuntu.comUB:CVE-2016-7777
HistoryOct 07, 2016 - 12:00 a.m.

CVE-2016-7777

2016-10-0700:00:00
ubuntu.com
ubuntu.com
10

6.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

3.3 Low

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:P/A:N

0.001 Low

EPSS

Percentile

30.3%

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.

Notes

Author Note
sbeattie The vulnerability is only exposed to x86 HVM guests.
OSVersionArchitecturePackageVersionFilename
ubuntu12.04noarchxen< 4.1.6.1-0ubuntu0.12.04.12UNKNOWN
ubuntu14.04noarchxen< 4.4.2-0ubuntu0.14.04.7UNKNOWN
ubuntu16.04noarchxen< 4.6.0-1ubuntu4.2UNKNOWN

6.3 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

3.3 Low

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:P/A:N

0.001 Low

EPSS

Percentile

30.3%