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Citrix XenServer Multiple Security Updates (CTX223291)

Information

Severity

Severity

High

Family

Family

Citrix Xenserver Local Security Checks

CVSSv2 Base

CVSSv2 Base

7.2

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

6 years ago

Modified

Modified

5 years ago

Summary

A number of security issues have been identified within Citrix XenServer. These issues could, if exploited, allow a malicious administrator of a PV guest VM to compromise the host. The issues have the identifiers: - CVE-2017-8903 (High): x86: 64bit PV guest breakout via pagetable use-after-mode-change - CVE-2017-8904 (High): grant transfer allows PV guest to elevate privileges - CVE-2017-8905 (Low): possible memory corruption via failsafe callback

Affected Software

Affected Software

XenServer versions 7.1, 7.0, 6.5, 6.2.0, 6.0.2.

Detection Method

Detection Method

Check the installed hotfixes.

Solution

Solution

Apply the hotfix referenced in the advisory.

Common Vulnerabilities and Exposures (CVE)