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Debian Security Advisory DSA 3140-1 (xen - security update)

Information

Severity

Severity

High

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

7.1

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

7 years ago

Modified

Modified

8 months ago

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.

Common Vulnerabilities and Exposures (CVE)