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Red Hat 6.2, 7.0 RHSA-2001:046-03 Critical: Netscape JavaScript Access

A remote site could gain access to the browser history, and possibly other data.. ` --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: New netscape packages available Advisory ID: RHSA-2001:046-03 Issue date: 2001-04-09 Updated on: 2001-04-10 Product: Red Hat Linux Keywords: netscape gif comment Cross references: Obsoletes: --------------------------------------------------------------------- 1. Topic: New netscape packages are availabe to fix a problem with the handling of JavaScript in certain situations. By exploiting this flaw, a remote site could gain access to the browser history, and possibly other data. It is recommended that all users upgrade to the fixed packages. 2. Relevant releases/architectures: Red Hat Linux 6.2 - alpha, i386 Red Hat Linux 7.0 - alpha, i386 3. Problem description: Netscape does not escape GIF file comments in the image information page; this allows JavaScript commands embedded therein to be executed. These commands could access data such as the browser history. Credit goes to Florian Wesch for discovering the vulnerability, and to Netscape for providing fixed packages. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directly *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start aninteractive process that will result in the appropriate RPMs being upgraded on your system. 5. Bug IDs fixed ( for more info): 6. RPMs required: Red Hat Linux 6.2: SRPMS: alpha: i386: Red Hat Linux 7.0: SRPMS: alpha: i386: 7. Verification: MD5 sum Package Name -------------------------------------------------------------------------- 1fde261c2376c8d210f6d72d23ad4de6 6.2/en/os/SRPMS/netscape-4.77-0.6.2.src.rpm 71b4f8c9d9cb39df21a6d99e0c062b80 6.2/en/os/SRPMS/netscape-alpha-4.77-0.6.2.src.rpm 0190f8439a1507165230f328dfe46ba2 6.2/en/os/alpha/netscape-common-4.77-0.6.2.alpha.rpm a571ee08b6b44aa4cbc3b98b6bef646c 6.2/en/os/alpha/netscape-communicator-4.77-0.6.2.alpha.rpm 304df2ab2e6f052a0e6bb432dd6f0afe 6.2/en/os/alpha/netscape-navigator-4.77-0.6.2.alpha.rpm a2a5adb4500d667265a34fb99b59c37c 6.2/en/os/i386/netscape-common-4.77-0.6.2.i386.rpm 9f439fa9e54ea82b37c1a3aa7c49d032 6.2/en/os/i386/netscape-communicator-4.77-0.6.2.i386.rpm b0970903ea25f2fe73c8d66afb9218cb 6.2/en/os/i386/netscape-navigator-4.77-0.6.2.i386.rpm 400709093733a7ccf90da78d179daeb1 7.0/en/os/SRPMS/netscape-4.77-1.src.rpm 29b80daa27fdad309a68f8101830e863 7.0/en/os/SRPMS/netscape-alpha-4.77-1.src.rpm a0fbb89d2dfb86c432f1d190e38981f3 7.0/en/os/alpha/netscape-common-4.77-1.alpha.rpm 05859fefa5d8cd3b02d2c768b614490b 7.0/en/os/alpha/netscape-communicator-4.77-1.alpha.rpm d0681b896b1fee8d5f1783274f4b1f64 7.0/en/os/alpha/netscape-navigator-4.77-1.alpha.rpm 4bb1bcc4c439531019bcab78cd953f59 7.0/en/os/i386/netscape-common-4.77-1.i386.rpm 7d6948941a20599b302bc0bc4f1c0999 7.0/en/os/i386/netscape-communicator-4.77-1.i386.rpm 7d570955357ad6b8fbb9d9fd4913d5cf 7.0/en/os/i386/netscape-navigator-4.77-1.i386.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: You can verify each package with the following command: rpm --checksig If you only wish to verify that each package has not been corrupted or tampered with, examine onlythe md5sum with the following command: rpm --checksig --nogpg 8. References: Copyright(c) 2000, 2001 Red Hat, Inc. `. Upgrade your Red Hat systems to fix Netscape's critical JavaScript access flaw affecting browser history.. Netscape JavaScript Access, Red Hat Security, Browser Security Update. . Severity: Critical. LinuxSecurity.com Team

Apr 10, 2001 •Critical Red Hat