_____________________________________________________________________________________________ TurboLinux Security Announcement Package: netscape-communicator Vulnerable Packages: All Turbolinux versions previous to 4.77-3 Date: 05/02/2001 5:00 PDT Affected TurboLinux versions: TL Server 6.5, TL 6.1 WorkStation, All TurboLinux versions 6.0.5 and earlier TurboLinux Advisory ID#: TLSA2001013 Credits: Vulnerability discovered by Florian Wesch < fw@dividuum.de > References: http://www.securityfocus.com/archive/1/175060 _____________________________________________________________________________________________ A security hole has been discovered in the netscape-communicator package. Please update the packages in your installation as soon as possible. _____________________________________________________________________________________________ 1. Problem Summary The Netscape browser does not escape the gif file comment in the image information page. This allows javascript execution in the "about:" protocol and can for example be used to upload the History (about:global) to a webserver. 2. Impact It is possible for a user to view a history of URLs visited on a remote system. 3. Solution Update the packages from our ftp server by running the following command: rpm -Uvh ftp_path_to_filename Where ftp_path_to_filename is the following: ftp://ftp.turbolinux.com/pub/updates/6.0/security/netscape-communicator-4.77-3.i386.rpm The source RPM can be downloaded here: ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/netscape-communicator-4.77-3.src.rpm **Note: You must rebuild and install the RPM if you choose to download and install the SRPM. Simply installing the SRPM alone WILL NOT CLOSE THE SECURITY HOLE. Please verify the MD5 checksums of the updates before you install: MD5 sum Package Name --------------------------------------------------------------------------------------------- 1c22d82709154a5541cf01e8561651c4 netscape-communicator-4.77-3.i386.rpm a0973f4123b0a6bba0279e403cae4772 netscape-communicator-4.77-3.src.rpm _____________________________________________________________________________________________ These packages are GPG signed by TurboLinux for security. Our key is available here: http://www.turbolinux.com/security/tlgpgkey.asc To verify a package, use the following command: rpm --checksig name_of_rpm To examine only the md5sum, use the following command: rpm --checksig --nogpg name_of_rpm **Note: Checking GPG keys requires RPM 3.0 or higher. ________________________________________________________________________________________________ You can find more updates on our ftp server: ftp://ftp.turbolinux.com/pub/updates/6.0/security/ for TL6.0 Workstation and Server security updates Our webpage for security announcements: http://www.turbolinux.com/security If you want to report vulnerabilities, please contact: security@turbolinux.com ________________________________________________________________________________________________ Subscribe to the TurboLinux Security Mailing lists: TL-security - A moderated list for discussing security issues TurboLinux products. Subscribe at http://www.turbolinux.com/mailman/listinfo/tl-security TL-security-announce - An announce-only mailing list for security updates and alerts. Subscribe at: http://www.turbolinux.com/mailman/listinfo/tl-security-announce