CVE-2016-3158

Published on: 04/13/2016 12:00:00 AM UTC

Last Modified on: 03/23/2021 11:27:02 PM UTC

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

Certain versions of Fedora from Fedoraproject contain the following vulnerability:

The xrstor function in arch/x86/xstate.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.

  • CVE-2016-3158 has been assigned by [email protected] to track the vulnerability - currently rated as LOW severity.

CVSS3 Score: 3.8 - LOW

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
LOCAL LOW LOW NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
CHANGED LOW NONE NONE

CVSS2 Score: 1.7 - LOW

Access
Vector
Access
Complexity
Authentication
LOCAL LOW SINGLE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
PARTIAL NONE NONE

CVE References

Description Tags Link
[SECURITY] Fedora 23 Update: xen-4.5.3-1.fc23 Third Party Advisory
lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2016-e5432ca977
XSA-172 - Xen Security Advisories Vendor Advisory
xenbits.xen.org
text/html
URL Logo CONFIRM xenbits.xen.org/xsa/advisory-172.html
[SECURITY] Fedora 22 Update: xen-4.5.3-1.fc22 Third Party Advisory
lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2016-5f196e4e4a
Xen CVE-2016-3158 Information Disclosure Vulnerability Third Party Advisory
VDB Entry
cve.report (archive)
text/html
URL Logo BID 85714
Patch
xenbits.xen.org
text/x-diff
CONFIRM xenbits.xen.org/xsa/xsa172-4.3.patch
Oracle VM Server for x86 Bulletin - July 2016 Vendor Advisory
web.archive.org
text/html
Inactive LinkNot Archived
URL Logo CONFIRM www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
Citrix XenServer Multiple Security Updates support.citrix.com
text/html
URL Logo CONFIRM support.citrix.com/article/CTX209443
Patch
xenbits.xen.org
text/x-diff
CONFIRM xenbits.xen.org/xsa/xsa172.patch
Debian -- Security Information -- DSA-3554-1 xen www.debian.org
Depreciated Link
text/html
URL Logo DEBIAN DSA-3554
Xen Lets Local Users on a Guest System Obtain Register Contents from the Target Guest System - SecurityTracker Third Party Advisory
VDB Entry
www.securitytracker.com
text/html
URL Logo SECTRACK 1035435

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
FedoraprojectFedora22AllAllAll
Operating
System
FedoraprojectFedora23AllAllAll
Operating
System
FedoraprojectFedora22AllAllAll
Operating
System
FedoraprojectFedora23AllAllAll
Operating
System
OracleVm Server3.3AllAllAll
Operating
System
OracleVm Server3.4AllAllAll
Operating
System
OracleVm Server3.3AllAllAll
Operating
System
OracleVm Server3.4AllAllAll
Operating
System
XenXenAllAllAllAll
  • cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*:
  • cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*:
  • cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*:
  • cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*:
  • cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*:
  • cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*: