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New Firefox Version Fixes 8 Security Holes

Mozilla on Tuesday released updates to fix at least eight security vulnerabilities in its Firefox Web browser and related software. Five of the eight flaws received a "critical" label, meaning that an attacker could exploit them to break into machines running vulnerable versions of the software.

Patches are available for both the 1.5.x and 2.x versions of Firefox, each of which should automatically alert you when the updates are ready for installation. Users also can install updates by clicking on "Help" then "Check for Updates." Some of the same updates also are available Mozilla's Thunderbird e-mail client, and its Seamonkey Internet suite.

Mozilla did not address one particular flaw that has received quite a bit of press over the past month: A bug in Firefox's password manager that could be exploited to gain access to a victim's stored user names and passwords.

Dan Veditz, a member of Mozilla's security team, said the team members thought they had a fix for the password manager flaw ready a week ago Friday, but later learned that it really didn't solve the problem. He said Mozilla currently plans to ship a fix for the problem in January.

"It made the password manager pretty unusable," Veditz said. "It required a format change to the password manager file to store additional information, and doing that ran the risk of losing peoples' passwords, so we were very uncomfortable rushing it in and decided to hold off a bit."

One final note: If you're using a version of Firefox prior to 1.5 (see "Help," "About Firefox" to view the version number), then it's time to install Firefox 2.0. Mozilla long ago stopped supporting or shipping patches for any Firefox versions that begin with 1.0.

By Brian Krebs |  December 20, 2006; 9:10 AM ET Latest Warnings , Misc. , New Patches , Safety Tips
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Comments

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How worried should a firefox user be about this password manager issue? I love using firefox, should something like this change my mind?

Posted by: Borch | December 20, 2006 10:26 AM

i looked up and found a new version of Thunderbird, which I guess I have not automatic update for and had to manually install. It was just a slight update, but why doesn't MOzilla offer an auto update for Thunderbird?

Posted by: jselt | December 20, 2006 10:31 AM

Borch said:
"How worried should a firefox user be about this password manager issue?"

I guess the first, and obvious, observation is that it doesn't affect you at all if you don't use the Firefox password manager. (The settings for this are under "Edit / Preferences" on the "Security" tab.) I love Firefox, too, but I don't use the password manager; I wouldn't use one from another browser either, just because of the risk of this kind of thing. (My best friend says I have a nasty, suspicious mind. ;-)

An alternative for keeping passwords, which seems to be quite secure, and has the additional advantage of being usable with any application, is PasswordSafe, originally by Bruce Schneier. Here is his page on it, with links for downloading:

http://www.schneier.com/passsafe.html

It keeps passwords in a file encrypted with the Blowfish algorithm, and is quite easy to use: you cut and paste passwords where they are needed, without ever displaying them "in the clear". The clipboard is cleared securely when the PasswordSafe window is minimized. The main version is for Windows, but there is a forked version for Linux as well.

Posted by: Rich Gibbs | December 20, 2006 12:05 PM

All I can say is thank you for kicking these Firefox guys in the tush and getting them to fix their browser, although it's been over a month that this password mgr. vulnerability has been around.

Do you know anything about this PasswordSafe?

Posted by: SPENCER ADAMS | December 20, 2006 12:18 PM

My FF 2.x "Check for Updates" update didn't properly install, so I had to download and reinstall the whole browser.

No biggie. I just keep FF around as an emergency backup browser. IE7 is my default browser of choice.

Posted by: JohnJ | December 20, 2006 12:40 PM

I ran FF update and only got to 1.5.9. How do I get 2.0?

Posted by: JMJ | December 20, 2006 1:01 PM

Go to this page...
http://www.mozilla.com/en-US/

to download FF 2.0.

Posted by: SanV | December 20, 2006 1:33 PM

I use Netscape which "emulates" (I guess that's the right word) Firefox. Do I need to do any updating in Netscape??? Thanks.

Posted by: rpcv84 | December 20, 2006 2:20 PM

I noticed after loading the latest FF patches, some sites don't load up @ all without a manual refresh: Amazon was the worst - I had to keep hitting F5 over 7 over until the page loaded, another was ESPN Insider.

Anyhow, another great password safe is KeyPassSafe: http://keepass.sourceforge.net/

Open sourced & based on Bruce's fundamentals.

Posted by: Victor | December 20, 2006 2:39 PM

I have tried installing firefox 2.0 a few times but everytime I install firefox 2.0 the browser becomes very slow. I end up going back to 1.5 and that works fine. Anyone else having this same issue? I would like to move to firefox 2.0 but cannot do so until it runs like 1.5. Any suggestions on resolving this issue?

Posted by: ms2481 | December 20, 2006 3:59 PM

Calling the RCSR attack a "flaw" or a "bug" in Firefox is a bit of a stretch. For one thing, Safari users are equally affected, IE users are almost equally affected, and even Opera users are somewhat affected. (See my comments in the bug report to understand why.)

More importantly, there is no good browser-side UI fix. Browser password management is one the Web's few good defenses against phishing. Making it significantly less convenient to log into all web sites in order to make it slightly harder to pull off RCSR attacks on sites that decide to allow password fields in user-generated content just doesn't make sense.

The issue only affects a small number of sites that do inadequate filtering. MySpace was the only vulnerable site I'm aware of, and they've already fixed the problem.

Regarding Jake's argument on lwn that "Website operators should certainly be doing better filtering, but the browser is the agent that the user has entrusted with their passwords", I'd like to point out that RCSR problems in web sites are much less common than XSS bugs. Users have "entrusted" web browsers with their sessions and cookies, but that doesn't mean the browser is at fault when a site has an XSS flaw. What makes RCSR different?

It's possible that the "check the action URL's host+port+protocol" solution would work. But I think it would break too many sites (immediately and over the years) to be worth it. Either way, it requires a lot more testing than we would have been able to pull off before Firefox 2.0.0.1, which we wanted to release quickly in order to get fixes for actual security holes to users.

Posted by: Jesse Ruderman | December 20, 2006 5:33 PM

jselt said:
"It was just a slight update, but why doesn't MOzilla offer an auto update for Thunderbird?"

Thunderbird does have a "Check for Updates" option in the "Help" menu. I checked a bit earlier, on a Win XP machine with Thunderbird 1.5.0.8, and it told me that 1.5.0.9 was available.

If you are running on Linux as an ordinary user (as you should be), and the executable is installed for system-wide use (in a system directory like /usr/local/bin), then "Check for Updates" will be greyed out, because you can't install the update anyway.

Posted by: Rich Gibbs | December 20, 2006 6:33 PM

RE: ms2481's problem of 2.0 being very slow compared with 1.5. Try going to:

http://www.mozilla.com/en-US/firefox/2.0/releasenotes/

Read the information under the "Troubleshooting" section. I'd recommend making a backup copy of your bookmarks file and storing that copy somewhere safe before trying anything. But hopefully following their advice of disabling any extensions or creating a new profile will resolve your problem. If you still have no luck, try looking for someone with a similar problem here:

http://forums.mozillazine.org/viewforum.php?f=38

If you can't find any helpful advice posted by someone else, try asking for help in a new discussion yourself. I hope you figure it out. :-) I found version 2.0 to be a really nice upgrade from 1.5.

Posted by: zoltar | December 20, 2006 8:00 PM

Roboform is a nice program for Windoze, that helps create and store online passwords.

Posted by: DOUGman | December 20, 2006 10:13 PM

I unstalled Firefox 1.05 and then installed the new 2.0 - worked a treat.

Now using Firefox - IE7 is a pain and has upset my computer, it cuts me off the internet every time I go to favourites.

Posted by: BigVal | December 21, 2006 12:13 AM

@Borch

If you're still running Windows you obviously don't worry enough.

Posted by: Rick | December 21, 2006 9:53 AM

I downloaded linux version Firefox 2.0.0.1 for my Linspire OS. Every thing works fine except I can not open Firefox, outside the folder. Move it to the desktop it will not work. The icon will not open any thing unless it is inside the folder, same for Thunderbird.

Posted by: Ross McGee | December 21, 2006 10:26 AM

you dumb a$$ FF users..back to IE6 lol!!

Posted by: Ricky Bobby | December 21, 2006 12:13 PM

Ross McGee> The icon will not open any thing unless it is inside the folder, same for Thunderbird.

Ross, I'm not a Linspire user, but here's a suggestion: try making a desktop shortcut instead of moving the application itself; Mozilla apps expect to find various libraries and configuration files in the directory in which they're located. Instructions for making a desktop shortcut are here:

http://forum.linspire.com/viewtopic.php?p=134644

Posted by: antibozo | December 21, 2006 10:51 PM

I love FF but every time it automatically updates, my FF crashes and I have to uninstall and reinstall.

Except for this time I cannot even install the new 2.0.0.1 I get some f/n/c/b/ error message on 2 window XP machines I use. My Mac with OS X installed the latest release for mac fine.

Posted by: JC | January 2, 2007 1:27 PM

I don't Care If FF fixs 20 Flaws.....its still safer then IE and I don't have to worry about Active X installing Crap on my Computer

URL: myspace.com/Crack_that_firewall

Posted by: WinXpTK | January 4, 2007 1:46 PM

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