Microsoft, Mozilla look into browser flaws

Microsoft and Mozilla are each working to tackle recently disclosed security flaws in the Internet Explorer and Firefox Web browsers.

The vulnerabilities were described earlier this week in postings to a popular security mailing list by researcher Michal Zalewski. Each browser could enable miscreants to grab data via malicious Web sites, Zalewski said.

In addition, another Firefox flaw could let attackers change cookie files on the user's PC, he said.

In the case of Internet Explorer, the problem affects the latest version, IE 7, and probably earlier releases, Zalewski wrote. Microsoft confirmed that the flaw could open up files stored on a PC's hard drive to an attacker, but only if the location of a given file is already known.

"In order to be successful, an attacker in advance would have to convince the user to enter the location of a file into an attacker's Web page through social engineering," a Microsoft representative said in an e-mail statement Friday. The software giant is still investigating the issue and will take "appropriate action," the representative said.

Flaws in Firefox
Firefox is affected by two security holes, both described by Zalewski. One is similar to the Internet Explorer problem, while the other could let miscreants change cookie files stored on a PC running the vulnerable browser. Cookies are small files stored on a PC by Web sites, to remember login credentials and site preferences, for example.

"The impact is quite severe," Zalewski wrote, regarding the cookie problem, in a posting to the Full Disclosure mailing list on Wednesday. Because cookies can be changed by a malicious Web site, an attacker can change the way other sites are displayed or how they work, he wrote.

Firefox developers, coordinated by Mozilla, have already crafted a fix for this flaw, according to a bug entry on the organization's Web site. The patch has not yet been made available to the browser's users. Mozilla typically releases updates with a number of fixes, and the next patch release could come soon, according to the site posting. The bugs affect the latest versions of the open-source browser, Zalewski wrote.

"The proposed fix seems to be OK and was provided swiftly," Zalewski wrote in an e-mail interview Friday. Last week, two other information-disclosure bugs in Firefox were publicized.

Meanwhile, smart Internet users should be aware of the Web sites they visit. Firefox users can also install the "NoScript" add-on to prevent script code from running on Web sites. This blocks Zalewski's proof-of-concept exploit for the information disclosure bug and will also prevent many other attacks.

[Robynsnest613]

Wasn't Internet explorer 7 recently Updated on Patch Tuesday!

Is not internet explorer 7 recently updated this past week on update Tuesday! I seem to recall, seeing an update for internet explorer 7.

Just wondering if this repairs the flaw? If it does then, go and update!!!

[Robynsnest613]

Wasn't Internet explorer 7 recently Updated on Patch Tuesday!

Is not internet explorer 7 recently updated this past week on update Tuesday! I seem to recall, seeing an update for internet explorer 7.

Just wondering if this repairs the flaw? If it does then, go and update!!!

[pcabellor]

Firefox workaround

There is a workaround for the cookie related flaw in Firefox at least:
http://mozillalinks.org/wp/2007/02/new-firefox-cookie-vulnerability-workaround/

[pcabellor]

Firefox workaround

There is a workaround for the cookie related flaw in Firefox at least:
http://mozillalinks.org/wp/2007/02/new-firefox-cookie-vulnerability-workaround/

[Robynsnest613]

Then Microsoft Needs to Get making XP With Service Pack 3!!

As there now is probally well over 100 patches, and climbing. Service pack 3 would be good now!!! I'm not upgrading to Vista, as that's probally very full of bugs too, worse than XP!

[Robynsnest613]

Then Microsoft Needs to Get making XP With Service Pack 3!!

As there now is probally well over 100 patches, and climbing. Service pack 3 would be good now!!! I'm not upgrading to Vista, as that's probally very full of bugs too, worse than XP!

[pjianwei]

The main thing abt IE n FF is the time to patch.

I still dun understand why MS need to patch every month, at least for home users there would be less problems compared to corporate users who have more compatibility issues. Why cant patches be provided as and when they are available when there is auto-update? At the very least they can do it like FF do, they notify of new versions (read: patches) when u open the browser.
interestingly for non xp and ie products, they do have non-regular patches such as for windows defender. So why not for IE?
True MS provide patches for download before patching but its hidden in the downloads site where u actually have to search for it.

[pjianwei]

The main thing abt IE n FF is the time to patch.

I still dun understand why MS need to patch every month, at least for home users there would be less problems compared to corporate users who have more compatibility issues. Why cant patches be provided as and when they are available when there is auto-update? At the very least they can do it like FF do, they notify of new versions (read: patches) when u open the browser.
interestingly for non xp and ie products, they do have non-regular patches such as for windows defender. So why not for IE?
True MS provide patches for download before patching but its hidden in the downloads site where u actually have to search for it.

[kamchoor]

No, just upgrade to Vista

There is no XP-SP3, get real, it's Vista Time Baby!

[kamchoor]

No, just upgrade to Vista

There is no XP-SP3, get real, it's Vista Time Baby!

[kamchoor]

don't care

please tell it to someone who cares or has not heard this whining before.
thanks,

[kamchoor]

don't care

please tell it to someone who cares or has not heard this whining before.
thanks,

[kamchoor]

don't care

please tell it to someone who cares or has not heard this whining before.
thanks,

[wbenton]

Different flaws... cannot compare

Both are flaws and both are found in browsers...

IE has multiple vulnerabilities, the highest rated as Highly Critical by www.secunia.org

IE v5.01 still has 6 out of 68 vulnerabilities unpatched as of this date. The unpatched are bugs from 2004-02-27, 2004-04-01, 2004-09-18, 2004-12-08, 2005-01-18 and 2006-02-14.

IE v5.5 still has 7 out of 70 vulnerabilities unpatched as of this date.
The unpatched are bugs from 2004-02-27, 2004-04-01, 2004-09-18, 2004-12-08, 2005-01-18, 2006-02-14 and 2006-04-27 with several of the moderately critical.

IE v6.x still has 19 out of 111 vulnerabilities unpatched as of this date.
The upatched are bugs from 2003-11-07, 2004-02-27, 2004-04-01, 2004-09-18, 2004-11-10, 2004-11-17, 2004-11-26, 2004-12-08, 2005-01-18, 2005-02-17, 2005-02-21, 2005-06-21, 2005-09-26, 2005-11-16, 2006-02-14, 2006-02-28, 2006-04-27, 2006-06-06, and 2007-01-09 with numerous ones are moderately critical.

And finally IE v7.x still has 4 of 6 unpatched vulnerabilities as of this date.
The unpatched bugs are from 2006-06-06, 2006-10-19, 2006-10-25, 2006-10-30 one of them moderately critical and given time... I'm sure this unpatched list will grow for Microsoft!!!

But now let's compare that to Foxfire's past track record:

Foxfire v0.x still has 2 of 39 unpatched vulnerabilities as of this date.
The unpatched bugs are from 2004-08-30 and 2004-09-18 both criticality very low.

Foxfire v1.x still has 4 of 39 unpatched vulnerabilities as of this date.
The unpatched bugs are from 2004-08-30, 2004-09-18, 2006-06-06 and 2006-11-22 all very low criticality.

Foxfire v2.x still has 4 of 5 unpatched vulnerabilities as of this date.
The unpatched bugs are from 2006-06-06, 2006-11-22, 2007-02-16 and 2007-02-19 all very low criticality.

Why does it take Microsoft over 4 years to fix some moderately critical flaws in their past released products?

Time to patch will differentiate the two enough to keep both of them out of the same article at the same time.

You CANNOT compare the two!!!

Walt

[wbenton]

Different flaws... cannot compare

Both are flaws and both are found in browsers...

IE has multiple vulnerabilities, the highest rated as Highly Critical by www.secunia.org

IE v5.01 still has 6 out of 68 vulnerabilities unpatched as of this date. The unpatched are bugs from 2004-02-27, 2004-04-01, 2004-09-18, 2004-12-08, 2005-01-18 and 2006-02-14.

IE v5.5 still has 7 out of 70 vulnerabilities unpatched as of this date.
The unpatched are bugs from 2004-02-27, 2004-04-01, 2004-09-18, 2004-12-08, 2005-01-18, 2006-02-14 and 2006-04-27 with several of the moderately critical.

IE v6.x still has 19 out of 111 vulnerabilities unpatched as of this date.
The upatched are bugs from 2003-11-07, 2004-02-27, 2004-04-01, 2004-09-18, 2004-11-10, 2004-11-17, 2004-11-26, 2004-12-08, 2005-01-18, 2005-02-17, 2005-02-21, 2005-06-21, 2005-09-26, 2005-11-16, 2006-02-14, 2006-02-28, 2006-04-27, 2006-06-06, and 2007-01-09 with numerous ones are moderately critical.

And finally IE v7.x still has 4 of 6 unpatched vulnerabilities as of this date.
The unpatched bugs are from 2006-06-06, 2006-10-19, 2006-10-25, 2006-10-30 one of them moderately critical and given time... I'm sure this unpatched list will grow for Microsoft!!!

But now let's compare that to Foxfire's past track record:

Foxfire v0.x still has 2 of 39 unpatched vulnerabilities as of this date.
The unpatched bugs are from 2004-08-30 and 2004-09-18 both criticality very low.

Foxfire v1.x still has 4 of 39 unpatched vulnerabilities as of this date.
The unpatched bugs are from 2004-08-30, 2004-09-18, 2006-06-06 and 2006-11-22 all very low criticality.

Foxfire v2.x still has 4 of 5 unpatched vulnerabilities as of this date.
The unpatched bugs are from 2006-06-06, 2006-11-22, 2007-02-16 and 2007-02-19 all very low criticality.

Why does it take Microsoft over 4 years to fix some moderately critical flaws in their past released products?

Time to patch will differentiate the two enough to keep both of them out of the same article at the same time.

You CANNOT compare the two!!!

Walt

[thedreaming]

No mention of a third choice...

Notice how they always mention either IE or FF having a flaw, but never Opera. I know Opera has had a flaw or two and they patch just like IE or FF, but they still don't get mentioned as much.

Is opera the MACOSX of browsers?

[thedreaming]

No mention of a third choice...

Notice how they always mention either IE or FF having a flaw, but never Opera. I know Opera has had a flaw or two and they patch just like IE or FF, but they still don't get mentioned as much.

Is opera the MACOSX of browsers?

[donaldgray]

Internet Explorer 7 update last Tuesday

I have had at least one problem ever since the update I didn't have before. I can no longer communicate with my Outlook Express mail from the command bar. It will not allow me. To confirm this I removed IE6 and went back to 6 and I could communicate with e mail. I reinstalled IE7 and could still communicate but along came the catchup Tuesday patch and it locked my e mail off from the command bar. Some quality control!

[donaldgray]

Internet Explorer 7 update last Tuesday

I have had at least one problem ever since the update I didn't have before. I can no longer communicate with my Outlook Express mail from the command bar. It will not allow me. To confirm this I removed IE6 and went back to 6 and I could communicate with e mail. I reinstalled IE7 and could still communicate but along came the catchup Tuesday patch and it locked my e mail off from the command bar. Some quality control!

[kamchoor]

don't care

please tell it to someone who cares or has not heard this whining before.
thanks,