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Debian Security Advisory DSA 3140-1 (xen - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Multiple security issues have been discovered in the Xen virtualisation solution which may result in denial of service, information disclosure or privilege escalation. CVE-2014-8594 Roger Pau Monne and Jan Beulich discovered that incomplete restrictions on MMU update hypercalls may result in privilege escalation. CVE-2014-8595 Jan Beulich discovered that missing privilege level checks in the x86 emulation of far branches may result in privilege escalation. CVE-2014-8866 Jan Beulich discovered that an error in compatibility mode hypercall argument translation may result in denial of service. CVE-2014-8867Jan Beulich discovered that an insufficient restriction in acceleration support for the REP MOVS instruction may result in denial of service. CVE-2014-9030 Andrew Cooper discovered a page reference leak in MMU_MACHPHYS_UPDATE handling, resulting in denial of service.
Affected Software
Affected Software
xen on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the stable distribution (wheezy), these problems have been fixed in version 4.1.4-3+deb7u4. For the upcoming stable distribution (jessie), these problems have been fixed in version 4.4.1-4. For the unstable distribution (sid), these problems have been fixed in version 4.4.1-4. We recommend that you upgrade your xen packages.