Dear SCO Customer, The enclosed Support Level Supplement (SLS) UOD392B (System Security Enhancements) corrects flaws found in these programs: at(C) login(M) mail(C) / mailx(C) prwarn(C) sadc(ADM) /usr/lib/pt_chmod /usr/mmdf/chans/local ex(C) / edit(C) *** New to UOD392B *** vi(C) / view(C) / vedit(C) *** New to UOD392B *** Previously, these programs could have allowed a user with an existing login account to obtain unauthorized privileged access to the system. In passwd(C), a flaw which could corrupt the password databases, preventing all logins, has been corrected. IMPORTANT: SLS UOD368B (the replacement passwd(C) supplement) must be removed before installing SLS UOD392B. SLS UOD392B applies to these releases: SCO UNIX System V/386 Release 3.2 Operating System Version 4.2 SCO Open Desktop Lite Release 3.0 SCO Open Desktop Release 3.0 SCO Open Server Enterprise System Release 3.0 SCO Open Server Network System Release 3.0 Using custom(ADM) to install SLS UOD392B ________________________________________ 1. If the system is running in multiuser mode, log in as root on the console. After warning the users that the system will be down for some time, enter the command: shutdown -y -g0 su 2. When the system enters single-user mode, you will see the message: Type CONTROL-d to proceed with normal startup, (or give root password for System Maintenance): Enter the root password and press . Wait until the "#" prompt appears. 3. Insert the custom volume disk labeled "UOD392B SLS Custom Install Disk" in the floppy drive and enter the command: /etc/custom The custom menu will appear. 4. To select the following, highlight each one with the cursor keys and press : Install -> A New Product -> Entire Product Position the cursor so that "Install" is highlighted and press . Make sure the words "A New Product" are highlighted in the window found in the lower right corner of the screen; press . Make sure the words "Entire Product" are highlighted in the "Choose an option" section of the screen; press . You will be prompted to "Insert distribution Volume 1 and press ". Make sure the disk is already in the drive and press . You will see: Installing custom data files Executing Product Prep Script The message "Saving files about to be Replaced" will flash on the screen. You will be prompted to "Insert the requested Volume and press ". The disk is already in the drive, therefore press . You will see: Extracting Files You will then be prompted to "Press any key to continue"; press . At the main custom menu, move the highlighted entry to "Quit" and press . Press again on the highlighted "yes." Reboot the computer. SLS UOD392B is now successfully installed. If you have questions regarding this SLS, or the product on which it is installed, please contact your software supplier. We appreciate your business. SCO Support Services