CVE-2016-3159low
New! CVE Severity Now Using CVSS v3
The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
Description
The fpu_fxrstor function in arch/x86/i387.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.
References
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181699.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/181729.html
http://support.citrix.com/article/CTX209443
http://www.debian.org/security/2016/dsa-3554
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://www.securityfocus.com/bid/85716
http://www.securitytracker.com/id/1035435
Details
Source: MITRE
Published: 2016-04-13
Updated: 2019-02-21
Type: CWE-200
Risk Information
CVSS v2
Base Score: 1.7
Vector: AV:L/AC:L/Au:S/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 3.1
Severity: LOW
CVSS v3
Base Score: 3.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Impact Score: 1.4
Exploitability Score: 2
Severity: LOW
Vulnerable Software
Configuration 1
OR
Configuration 2
OR
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions from 4.3.0 to 4.3.4 (inclusive)
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions from 4.4.0 to 4.4.4 (inclusive)
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions from 4.5.0 to 4.5.3 (inclusive)
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions from 4.6.0 to 4.6.1 (inclusive)
Configuration 3
OR
Configuration 4
OR
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 94608 | SUSE SLES11 Security Update : xen (SUSE-SU-2016:2725-1) (Bunker Buster) | Nessus | SuSE Local Security Checks | critical |
| 94269 | SUSE SLES12 Security Update : xen (SUSE-SU-2016:2533-1) (Bunker Buster) | Nessus | SuSE Local Security Checks | critical |
| 94267 | SUSE SLES11 Security Update : xen (SUSE-SU-2016:2528-1) (Bunker Buster) | Nessus | SuSE Local Security Checks | critical |
| 94000 | openSUSE Security Update : xen (openSUSE-2016-1170) (Bunker Buster) | Nessus | SuSE Local Security Checks | critical |
| 93999 | openSUSE Security Update : xen (openSUSE-2016-1169) (Bunker Buster) | Nessus | SuSE Local Security Checks | critical |
| 93298 | SUSE SLES11 Security Update : xen (SUSE-SU-2016:2100-1) (Bunker Buster) | Nessus | SuSE Local Security Checks | critical |
| 93296 | SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2016:2093-1) (Bunker Buster) | Nessus | SuSE Local Security Checks | critical |
| 92635 | Debian DLA-571-1 : xen security update (Bunker Buster) | Nessus | Debian Local Security Checks | high |
| 92601 | OracleVM 3.3 : xen (OVMSA-2016-0089) | Nessus | OracleVM Local Security Checks | high |
| 92600 | OracleVM 3.4 : xen (OVMSA-2016-0088) (Bunker Buster) | Nessus | OracleVM Local Security Checks | high |
| 91756 | OracleVM 3.2 : xen (OVMSA-2016-0081) | Nessus | OracleVM Local Security Checks | high |
| 90638 | Debian DSA-3554-1 : xen - security update | Nessus | Debian Local Security Checks | high |
| 90470 | Fedora 23 : xen-4.5.3-1.fc23 (2016-e5432ca977) | Nessus | Fedora Local Security Checks | low |
| 90460 | Fedora 22 : xen-4.5.3-1.fc22 (2016-5f196e4e4a) | Nessus | Fedora Local Security Checks | low |