CVE-2013-2076

medium
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Description

Xen 4.0.x, 4.1.x, and 4.2.x, when running on AMD64 processors, only save/restore the FOP, FIP, and FDP x87 registers in FXSAVE/FXRSTOR when an exception is pending, which allows one domain to determine portions of the state of floating point instructions of other domains, which can be leveraged to obtain sensitive information such as cryptographic keys, a similar vulnerability to CVE-2006-1056. NOTE: this is the documented behavior of AMD64 processors, but it is inconsistent with Intel processors in a security-relevant fashion that was not addressed by the kernels.

References

http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html

http://secunia.com/advisories/55082

http://security.gentoo.org/glsa/glsa-201309-24.xml

http://www.debian.org/security/2014/dsa-3006

http://www.openwall.com/lists/oss-security/2013/06/03/1

Details

Source: MITRE

Published: 2013-08-28

Updated: 2014-12-12

Type: CWE-200

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:A/AC:H/Au:S/C:C/I:N/A:N

Impact Score: 6.9

Exploitability Score: 2.5

Severity: MEDIUM

Tenable Plugins

View all (13 total)

IDNameProductFamilySeverity
84140OracleVM 3.2 : xen (OVMSA-2015-0068) (POODLE) (Venom)NessusOracleVM Local Security Checks
low
83616SUSE SLES11 Security Update : Xen (SUSE-SU-2014:0446-1)NessusSuSE Local Security Checks
high
79511OracleVM 3.1 : xen (OVMSA-2013-0043)NessusOracleVM Local Security Checks
medium
79510OracleVM 3.2 : xen (OVMSA-2013-0042)NessusOracleVM Local Security Checks
medium
77240Debian DSA-3006-1 : xen - security updateNessusDebian Local Security Checks
high
75130openSUSE Security Update : xen (openSUSE-SU-2013:1404-1)NessusSuSE Local Security Checks
high
75129openSUSE Security Update : xen (openSUSE-SU-2013:1392-1)NessusSuSE Local Security Checks
high
70184GLSA-201309-24 : Xen: Multiple vulnerabilitiesNessusGentoo Local Security Checks
high
69297SuSE 11.3 Security Update : Xen (SAT Patch Number 8063)NessusSuSE Local Security Checks
high
67395Fedora 19 : xen-4.2.2-6.fc19 (2013-9986)NessusFedora Local Security Checks
medium
67275Fedora 17 : xen-4.1.5-5.fc17 (2013-10247)NessusFedora Local Security Checks
medium
67269Fedora 18 : xen-4.2.2-6.fc18 (2013-10136)NessusFedora Local Security Checks
medium
66985SuSE 11.2 Security Update : Xen (SAT Patch Number 7798)NessusSuSE Local Security Checks
high