Open-Xchange releases UCS Hotfix 2011-05-26

This Release fixes bugs of Univention Corporate Server 2.4 which is integrated at Open-Xchange Advanced Server Edition and Open-Xchange Server Edition for UCS. The Hotfix is available for all customers with a valid Open-Xchange license.

Fixed Components:
  • Cyrus IMAPD; CVE identification figure: CVE-2011-1926
  • Firefox; CVE identification figure: CVE-2011-0065 CVE-2011-0066 CVE-2011-0067 CVE-2011-0069 *CVE-2011-0070 CVE-2011-0072 CVE-2011-0073 CVE-2011-0074 CVE-2011-0075 CVE-2011-0076 CVE-2011-0077 CVE-2011-0078 CVE-2011-0080 CVE-2011-0081 CVE-2011-1202
  • Flash-Plugin; CVE identification figure: CVE-2011-0579 CVE-2011-0618 CVE-2011-0619 CVE-2011-0620 CVE-2011-0621 CVE-2011-0622 CVE-2011-0623 CVE-2011-0624 CVE-2011-0625 CVE-2011-0626 CVE-2011-0627

Installation of this PTF:

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