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SuSE: Kbase 1.1 Critical Advisory for Klock Bypass Threat

The KDE screensaver klock includes a bug, which allows to bypass the password authentication. While klock waits for kcheckpass to verify the password a timer is triggered and the dialog box is deleted. After kcheckpass completes klock crashs. . ______________________________________________________________________________ SuSE Security Announcement Package: kbase 1.1 (klock, the KDE screensaver) Date: Wed Jun 30 14:32:05 CEST 1999 Affected: all Unix operating systems using kbase 1.1 ______________________________________________________________________________ A security hole was discovered in the package mentioned above. Please update as soon as possible or disable the service if you are using this software on your SuSE Linux installation(s). Other Linux distributions or operating systems might be affected as well, please contact your vendor for information about this issue. Please note, that that we provide this information on as "as-is" basis only. There is no warranty whatsoever and no liability for any direct, indirect or incidental damage arising from this information or the installation of the update package. ______________________________________________________________________________ 1. Problem Description The KDE screensaver klock includes a bug, which allows to bypass the password authentication. While klock waits for kcheckpass to verify the password a timer is triggered and the dialog box is deleted. After kcheckpass completes klock crashs. 2. Impact By typing in a specific key sequence everyone could bypass the password athentication of klock. 3. Solution Install the updated package, which is available from our ftp server. ______________________________________________________________________________ Here is the md5 checksum of the fixed package, please verify these before installing the new package: 85bbdeac8430918d52f9bbe93ee074f9 kbase-1.1.1-15.i386.rpm ______________________________________________________________________________ You will find the update on our ftp-Server: Webpage for patches: https://www.suse.com/de-de/ or try the following web pages for a list of mirrors: https://www.suse.com/de-de/ ______________________________________________________________________________ . ______________________________________________________________________________ SuSE Security Announc. screensaver, klock, which, allows, bypass, password, authentication, while. . Severity: Critical. LinuxSecurity.com Team

Dec 08, 1999 •Critical SuSE