Open-Xchange releases UCS Hotfix 2011-08-24

This release provides a security update of Univention Corporate Server 2.4 which is integrated at Open-Xchange Advanced Server Edition and Open-Xchange Server Edition for UCS. We encourage administrators to install this update. The Hotfix is available for all customers with a valid Open-Xchange license.

Fixed Components:
  • Evolution Data Server (CVE-2009-0547 CVE-2009-0582 CVE-2009-0587)
  • Imlib (CVE-2008-6079)
  • kdegraphics/kpdf (CVE-2010-3702 CVE-2010-3704)
  • LibXFont (CVE-2011-2895)
  • ISC DHCP-Server (CVE-2011-2748 CVE-2011-2749)

Installation of this Hotfix Release:
Please note: It is necessary to activate the installation of Hotfixes. Please note the following step at

The system can be updated as usual for UCS using the univention-updater net command or the UMC module Online Update.
  • Please enter your username/password first under the component called „OX" and activate it.
  • In the online-updates module of UMC, under Release information, there is provided the new update
  • Click on "Install this update"
  • Reboot