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TUCoPS :: Linux :: Red Hat/Fedora :: ciacl022.htm

Red Hat Linux Netscape HTML Buffer Overflow
Red Hat Linux Netscape HTML Buffer Overflow Privacy and Legal Notice


L-022: Red Hat Linux Netscape HTML Buffer Overflow

November 28, 2000 17:00 GMT
PROBLEM:       The HTML parsing code of Netscape is flawed. A malicious remote
               website can execute a buffer overflow causing arbitrary code to run.
               Red Hat Linux 6.0
                    i386, alpha, sparc
               Red Hat Linux 6.1
                    i386, alpha, sparc
               Red Hat Linux 6.2
                    i386, alpha, sparc
               Red Hat Linux 7.0
                    i386, alpha

DAMAGE:        Through the execution of arbitrary code a malicious remote
               website could gain root access.
SOLUTION:      Update Netscape, as per Red Hat instructions.

VULNERABILITY The risk is HIGH. The vulnerability has been publicly posted. ASSESSMENT:
[****** Begin Red Hat Advisory ******] --------------------------------------------------------------------- Red Hat, Inc. Security Advisory Synopsis: New Netscape packages available Advisory ID: RHSA-2000:109-05 Issue date: 2000-11-17 Updated on: 2000-11-27 Product: Red Hat Linux Keywords: netscape HTML buffer overflow Cross references: N/A --------------------------------------------------------------------- 1. Topic: New Netscape packages are available that fix a buffer overflow in parsing HTML. It is recommended that all Netscape users update to the fixed packages. 2000-11-27: Added packages for Red Hat Linux 7 for Alpha 2. Relevant releases/architectures: Red Hat Linux 6.0 - i386, alpha, sparc Red Hat Linux 6.1 - i386, alpha, sparc Red Hat Linux 6.2 - i386, alpha, sparc Red Hat Linux 7.0 - i386, alpha 3. Problem description: A buffer overflow exists in Netscape's HTML parsing code. By using specially designed code, a remote website could cause arbitrary code to be run on the local machine. 4. Solution: For each RPM for your particular architecture, run: rpm -Fvh [filename] where filename is the name of the RPM. 5. Bug IDs fixed ( for more info): 20415 - Netscape segfault - cured in 4.76 20462 - Netscape 4.75 buffer overflow 6. RPMs required: Red Hat Linux 6.0: i386: sources: Red Hat Linux 6.1: i386: sources: Red Hat Linux 6.2: alpha: i386: sources: Red Hat Linux 7.0: alpha: i386: sources: 7. Verification: MD5 sum Package Name -------------------------------------------------------------------------- 70e2a3b0e97bd39cf5041ed4abacda98 6.0/SRPMS/netscape-4.76-0.6.2.src.rpm b4a875d94e0947b16b9a973d23f6222b 6.0/i386/netscape-common-4.76-0.6.2.i386.rpm fcde6218d7de0e9e009892c57e7f88ca 6.0/i386/netscape-communicator-4.76-0.6.2.i386.rpm 670b08cbad1097f4ca923071c202b5dd 6.0/i386/netscape-navigator-4.76-0.6.2.i386.rpm 70e2a3b0e97bd39cf5041ed4abacda98 6.1/SRPMS/netscape-4.76-0.6.2.src.rpm b4a875d94e0947b16b9a973d23f6222b 6.1/i386/netscape-common-4.76-0.6.2.i386.rpm fcde6218d7de0e9e009892c57e7f88ca 6.1/i386/netscape-communicator-4.76-0.6.2.i386.rpm 670b08cbad1097f4ca923071c202b5dd 6.1/i386/netscape-navigator-4.76-0.6.2.i386.rpm 70e2a3b0e97bd39cf5041ed4abacda98 6.2/SRPMS/netscape-4.76-0.6.2.src.rpm 924dec1cde5eba83655c1aa1f93bad39 6.2/SRPMS/netscape-alpha-4.76-0.6.2.src.rpm acbb0bcbca33eb41e396a9c7013e2d3d 6.2/alpha/netscape-common-4.76-0.6.2.alpha.rpm 5709be8e1656a2eff9fafe719f5528d2 6.2/alpha/netscape-communicator-4.76-0.6.2.alpha.rpm 9aa6f256592c3f96ee60c57b879618b2 6.2/alpha/netscape-navigator-4.76-0.6.2.alpha.rpm b4a875d94e0947b16b9a973d23f6222b 6.2/i386/netscape-common-4.76-0.6.2.i386.rpm fcde6218d7de0e9e009892c57e7f88ca 6.2/i386/netscape-communicator-4.76-0.6.2.i386.rpm 670b08cbad1097f4ca923071c202b5dd 6.2/i386/netscape-navigator-4.76-0.6.2.i386.rpm 81e1c3e9673ab1e2b498cf3fdaeabcc5 7.0/SRPMS/netscape-4.76-1.src.rpm 7faa76eb6405f45aeb6c41380b833967 7.0/SRPMS/netscape-alpha-4.76-1.src.rpm 199832fec88401961e33203adf3a27c2 7.0/alpha/netscape-common-4.76-1.alpha.rpm 29848ea9545c21d3bb0d8318265fd918 7.0/alpha/netscape-communicator-4.76-1.alpha.rpm 1f27bf46ccf8c7d0bfa7106240cc8174 7.0/alpha/netscape-navigator-4.76-1.alpha.rpm 3bb98e22f094236211955579c7ce49ad 7.0/i386/netscape-common-4.76-1.i386.rpm fc03263dbbbe7f8f1031200d9a8e2022 7.0/i386/netscape-communicator-4.76-1.i386.rpm 3a12fb2d8d0187c7d3684b2a7cf4a9fc 7.0/i386/netscape-navigator-4.76-1.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 only the md5sum with the following command: rpm --checksig --nogpg 8. References: Copyright(c) 2000 Red Hat, Inc. [****** End Red Hat Advisory ******]

CIAC wishes to acknowledge the contributions of Red Hat , Inc. for the information contained in this bulletin.

CIAC services are available to DOE, DOE Contractors, and the NIH. CIAC can be contacted at:
    Voice:          +1 925-422-8193 (7 x 24)
    FAX:            +1 925-423-8002
    STU-III:        +1 925-423-2604
    World Wide Web:
                     (same machine -- either one will work)
    Anonymous FTP:
                     (same machine -- either one will work)

This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes.
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