NoScript extension will help somewhat, but expect to upgrade your
FireFox or Mozilla Browser within the next week or so...
Who was it that said that "Software complex enough to be useful is
complicated enough to be vulnerable."
Short version: Javascript and Object embedding are both vulnerable;
disable both to be certain. Also numerous javascript security exploits
are in the wild right now to do thngs like using a hidden iframe to
steal your address book from $webmail (including Gmail)
---------- Forwarded message ----------
From: US-CERT Technical Alerts <[EMAIL PROTECTED]>
Date: Dec 20, 2006 6:42 PM
Subject: US-CERT Technical Cyber Security Alert TA06-354A -- Mozilla
Addresses Multiple Vulnerabilities
To: [EMAIL PROTECTED]
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Hash: SHA1
National Cyber Alert System
Technical Cyber Security Alert TA06-354A
Mozilla Addresses Multiple Vulnerabilities
Original release date: December 20, 2006
Last revised: --
Source: US-CERT
Systems Affected
* Mozilla Firefox
* Mozilla Thunderbird
* Mozilla SeaMonkey
* Netscape Browser
Other products based on Mozilla components may also be affected.
Overview
The Mozilla web browser and derived products contain several
vulnerabilities, the most severe of which could allow a remote
attacker to execute arbitrary code on an affected system.
I. Description
Mozilla has released new versions of Firefox, Thunderbird, and
SeaMonkey to address several vulnerabilities. Further details about
these vulnerabilities are available from Mozilla and the
Vulnerability Notes Database. An attacker could exploit these
vulnerabilities by convincing a user to view a specially-crafted
HTML document, such as a web page or HTML email message.
II. Impact
While the impacts of the individual vulnerabilities vary, the most
severe could allow a remote, unauthenticated attacker to execute
arbitrary code on a vulnerable system. An attacker may also be able
to cause a denial of service.
III. Solution
Upgrade
These vulnerabilities are addressed in Mozilla Firefox 1.5.0.9,
Mozilla Firefox 2.0.0.1, Mozilla Thunderbird 1.5.0.9, and SeaMonkey
1.0.7. Mozilla Firefox, Thunderbird, and SeaMonkey automatically
check for updates by default.
Support for Firefox 1.5 is scheduled to end in April
2007. According to Mozilla:
Firefox 1.5.0.x will be maintained with security and stability
updates until April 24, 2007. All users are strongly encouraged
to upgrade to Firefox 2.
Disable JavaScript and Java
These vulnerabilities can be mitigated by disabling JavaScript and
Java. For more information about configuring Firefox, please see
the "Securing Your Web Browser" document. Netscape users should see
the "Site Controls" document for details. Thunderbird disables
JavaScript and Java by default.
IV. References
* US-CERT Vulnerability Notes -
<http://www.kb.cert.org/vuls/byid?searchview&query=mozilla_2006121
9>
* Securing Your Web Browser -
<http://www.us-cert.gov/reading_room/securing_browser/browser_secu
rity.html#Mozilla_Firefox>
* Mozilla Foundation Security Advisories -
<http://www.mozilla.org/security/announce/>
* Known Vulnerabilities in Mozilla Products -
<http://www.mozilla.org/projects/security/known-vulnerabilities.ht
ml>
* Mozilla Hall of Fame -
<http://www.mozilla.org/university/HOF.html>
* Site Controls -
<http://browser.netscape.com/ns8/help/options-site.jsp>
____________________________________________________________________
The most recent version of this document can be found at:
<http://www.us-cert.gov/cas/techalerts/TA06-354A.html>
____________________________________________________________________
Feedback can be directed to US-CERT Technical Staff. Please send
email to <[EMAIL PROTECTED]> with "TA06-354A Feedback VU#606260" in the
subject.
____________________________________________________________________
For instructions on subscribing to or unsubscribing from this
mailing list, visit <http://www.us-cert.gov/cas/signup.html>.
____________________________________________________________________
Produced 2006 by US-CERT, a government organization.
Terms of use:
<http://www.us-cert.gov/legal.html>
____________________________________________________________________
Revision History
December 20, 2006: Initial release
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