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TurboLinux Security Announcement: Package: netscape-4.73 and earlier

Aug 02, 2000, 22:54 (0 Talkback[s])
(Other stories by Joe Little)

Date: Wed, 2 Aug 2000 13:34:36 -0700 (PDT)
From: Joe Little jlittle@turbolinux.com
To: tl-security-announce@turbolinux.com
Subject: [TL-Security-Announce] netscape TLSA2000017-1

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                        TurboLinux Security Announcement

        Package: netscape-4.73 and earlier
        Date: Wednesday August 2 12:00 PDT 2000

        Affected TurboLinux versions: 6.0.5 and earlier
        Vulnerability Type: malicious remote website exploit possible
        TurboLinux Advisory ID#:  TLSA2000017-1
        Credits: netscape.ad-1.00-07

A security hole was discovered in the package mentioned above. Please update the package in your installation as soon as possible or disable the service.


1. Problem Summary

Current and previous versions of netscape communicator have a buffer overflow condition in its handling of JPEG files. Specifically, it trusts the purported length of JPEG files provided by the header and can be mislead into reading arbitrary amounts of data, leading to the overwriting of memory.

2. Impact

A web site could contain malicious code which would enable remote execution or other malicious behavior as the user of netscape on the client's machine.

3. Solution

Please upgrade your packages to match the new revision

Update the packages from our ftp server by running the following command:

rpm -Fv ftp_path_to_filename

Where ftp_path_to_filename is the following:
ftp://ftp.turbolinux.com/pub/updates/6.0/security/netscape-communicator-4.74-2.i386.rpm

The source RPM can be downloaded here:
ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/netscape-communicator-4.74-2.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

940ec5bccc73166938e1b75cb384de19 netscape-communicator-4.74-2.i386.rpm
dcc0a1890e0123efd3cd86efbc276942 netscape-communicator-4.74-2.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
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

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