Xen 4.0 through 4.3.x, when using AVX or LWP capable...
Vulnerability Description
Xen 4.0 through 4.3.x, when using AVX or LWP capable CPUs, does not properly clear previous data from registers when using an XSAVE or XRSTOR to extend the state components of a saved or restored vCPU after touching other restored extended registers, which allows local guest OSes to obtain sensitive information by reading the registers.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://www.openwall.com/lists/oss-security/2013/09/25/2
- http://www.securitytracker.com/id/1029090
- http://security.gentoo.org/glsa/glsa-201407-03.xml
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- http://www.debian.org/security/2014/dsa-3006
- http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html
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Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.