Information disclosure in Xen - CVE-2013-1442
Published: October 1, 2013 / Updated: July 28, 2020
Vulnerability identifier: #VU32625
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2013-1442
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Xen Project
Affected software:
Xen
Xen
Detailed vulnerability description
The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.
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.
How to mitigate CVE-2013-1442
Install update from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html
- http://security.gentoo.org/glsa/glsa-201407-03.xml
- http://www.debian.org/security/2014/dsa-3006
- http://www.openwall.com/lists/oss-security/2013/09/25/2
- http://www.securitytracker.com/id/1029090