To: bugtraqat_private announceat_private scoannmodat_private ______________________________________________________________________________ Caldera International, Inc. Security Advisory Subject: OpenServer 5.0.5 OpenServer 5.0.6 : popper buffer overflow and denial-of-service Advisory number: CSSA-2002-SCO.20 Issue date: 2002 May 22 Cross reference: ______________________________________________________________________________ 1. Problem Description /etc/popper will go into a loop if a character string of length 2048 (or more) is sent to it. If the bulldir variable in the user's config file is longer than 256 characters, popper will memory fault. 2. Vulnerable Supported Versions System Binaries ---------------------------------------------------------------------- OpenServer 5.0.5 /etc/popper OpenServer 5.0.6 /etc/popper 3. Solution The proper solution is to install the latest packages. 4. OpenServer 5.0.5 4.1 Location of Fixed Binaries ftp://stage.caldera.com/pub/security/openserver/CSSA-2002-SCO.20 4.2 Verification MD5 (VOL.000.000) = f2746cddde194cb93e5ad1b41637a75c md5 is available for download from ftp://stage.caldera.com/pub/security/tools/ 4.3 Installing Fixed Binaries Upgrade the affected binaries with the following commands: 1) Download the VOL* files to the /tmp directory Run the custom command, specify an install from media images, and specify the /tmp directory as the location of the images. 5. OpenServer 5.0.6 5.1 Location of Fixed Binaries ftp://stage.caldera.com/pub/security/openserver/CSSA-2002-SCO.20 5.2 Verification MD5 (VOL.000.000) = f2746cddde194cb93e5ad1b41637a75c md5 is available for download from ftp://stage.caldera.com/pub/security/tools/ 5.3 Installing Fixed Binaries Upgrade the affected binaries with the following commands: 1) Download the VOL* files to the /tmp directory Run the custom command, specify an install from media images, and specify the /tmp directory as the location of the images. 6. References Specific references for this advisory: none Caldera UNIX security resources: http://stage.caldera.com/support/security/ Caldera OpenLinux security resources: http://www.caldera.com/support/security/index.html This security fix closes Caldera incidents sr863699, fz520822, erg712033. 7. Disclaimer Caldera International, Inc. is not responsible for the misuse of any of the information we provide on this website and/or through our security advisories. Our advisories are a service to our customers intended to promote secure installation and use of Caldera products. 8. Acknowledgements Marcell Fodor reported the memory fault issue. Dustin Childers reported the denial-of-service issue. ______________________________________________________________________________
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