From kbeyer@TURBOLINUX.COM Thu Aug 31 15:19:31 2000 From: Kevin Beyer To: BUGTRAQ@SECURITYFOCUS.COM Date: Thu, 31 Aug 2000 11:58:16 -0700 Reply-To: tl-security-announce@www1.turbolinux.com Subject: [BUGTRAQ] [TL-Security-Announce] netscape TLSA2000020-1 ___________________________________________________________________________ TurboLinux Security Announcement Package: netscape-communicator 4.74 and earlier Date: Thursday August 31 11:45 PDT 2000 Affected TurboLinux versions: 6.0.5 and earlier TurboLinux Advisory ID#: TLSA2000020-1 ___________________________________________________________________________ A security hole was discovered in the package mentioned above. Please update the package in your installation as soon as possible. ___________________________________________________________________________ 1. Problem Summary There is a serious problem in netscape's java libraries that allows an applet to act as a web server on the client machine, exposing all files on the machine to the world. The exploit of this vulnerability is widely published under the name "Brown Orifice". This update also contains fixes a buffer overrun condition while processing JPEG files. This bug could also be exploited by malicious web servers to obtain access to the client machine. 2. Impact It is possible for the browser to act as a web server for the client's entire machine and can also allow access into the client machine via a buffer overrun condition. 3. Solution Update the package from our ftp server by running the following command for then package: rpm -Uvh --nodeps --Force ftp_path_to_filename Where ftp_path_to_filename is the following: ftp://ftp.turbolinux.com/pub/updates/6.0/security/netscape-communicator-4.75-1.i386.rpm The source RPM can be downloaded here: ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/netscape-communicator-4.75-1.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 checksum of the update before you install: MD5 sum Package Name --------------------------------------------------------------------------- c99bfe042efb64bac1e9838d57ef7bd5 netscape-communicator-4.75-1.i386 ___________________________________________________________________________ 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 ftp://ftp.turbolinux.com/pub/updates/4.0/security/ for TL4.0 Workstation and Server security updates Our webpage for security announcements: http://www.turbolinux.com/security If you want to report vulnerabilities, please contact: rt-security@turbolinux.com ___________________________________________________________________________ Subscribe to the TurboLinux Security Mailing lists: TL-security - A moderated list for discussing security issues in 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 [Part 2, Application/PGP-SIGNATURE 240bytes] [Unable to print this part]