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Citrix XenServer Multiple Security Updates (CTX202404)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
A number of security vulnerabilities have been identified in Citrix XenServer that may allow a malicious administrator of a guest VM to compromise the host and guest users to crash the host. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and including Citrix XenServer 6.5 Service Pack 1. The following vulnerabilities have been addressed: CVE-2015-7835 (High): Uncontrolled creation of large page mappings by PV guests CVE-2015-7969 (Low): Leak of main per-domain vcpu pointer array/Leak of per-domain profiling-related vcpu pointer array CVE-2015-7970 (Medium): Host crash when migrating a PoD VM CVE-2015-7971 (Low): Some pmu and profiling hypercalls log without rate limiting CVE-2015-7972 (Low): Populate-on-demand balloon size inaccuracy can crash guests
Affected Software
Affected Software
Citrix XenServer up to and including Citrix XenServer 6.5 Service Pack 1
Detection Method
Detection Method
Check the installed hotfixes
Solution
Solution
Apply the hotfix referenced in the advisory.