| Firefox 2.0.0.3 updates security, stability |
Mar. 21, 2007
 Mozilla Corp. on March 20 released new security and stability updates for both versions of its Firefox browser and for its Internet application suite, SeaMonkey. The new updates eradicate a minor FTP PASV port-scanning vulnerability, a Mozilla spokesperson said.
A malicious web page hosted on a specially-coded FTP server could exploit this weakness to perform a rudimentary port-scan of machines inside the firewall of the victim.
By itself this causes no harm, but information about an internal network may be useful to an attacker should there be other vulnerabilities present on the network, the spokesperson continued.
The FTP protocol includes the PASV (passive) command, which is used by Firefox to request an alternate data port. The specification of the FTP protocol allows the server response to include an alternate server address as well, although this is rarely used in practice.
With the update, Mozilla clients will now ignore the alternate server address, the spokesperson said.
Firefox 2.0.0.3 is now available for Linux, Windows, and Mac OS X for free download here.
Firefox 1.5.0.x will be maintained with security and stability updates until April 24. All users are encouraged to upgrade to Firefox 2, the spokesperson said. Firefox 1.5.0.11 is available for download here.
The SeaMonkey 1.1.1 suite, which comprises browser, advanced email, newsgroup client, IRC chat client, and HTML editing functions, can be downloaded here
Users who already have Firefox 1.5.0.x or Firefox 2.0.0.x will receive an automated update notification within 24 to 48 hours, the spokesperson said. This update can also be applied manually by selecting "Check for Updates" from the Help menu.
--Chris Preimesberger
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