Citrix XenServer Multiple Security Updates (CTX220112)

Several security issues have been identified within Citrix XenServer. These issues could, if exploited, allow an authenticated administrator to perform a denial-of-service attack against the host, even when that administrator has a less-privileged RBAC role (e.g. read-only). In addition, the issues could permit an attacker with the ability to influence NTP traffic on the management network to disrupt time synchronization on the host until the next reboot. The following vulnerabilities have been addressed: CVE-2017-5572 (Low): Authenticated read-only administrator can corrupt host database CVE-2017-5573 (Low): Authenticated read-only administrator can cancel tasks of other administrators CVE-2015-5300, CVE-2015-7704, CVE-2015-7705 (Low): NTP updates. Customers who have not enabled NTP are unaffected by the NTP issues. Customers who have not enabled RBAC are unaffected by the RBAC issues. Customers using Citrix XenServer 6.0.2 in the Common Criteria configuration are unaffected by the RBAC issues.

XenServer 7.0 XenServer 6.5 XenServer 6.2.0 XenServer 6.0.2

Check the installed hotfixes

Apply the hotfix referenced in the advisory