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National Cyber Alert System
Technical Cyber Security Alert TA06-312A
Mozilla Updates for Multiple Vulnerabilities
Original release date: November 08, 2006
Last revised: --
Source: US-CERT
Systems Affected
* Mozilla SeaMonkey
* Mozilla Firefox
* Mozilla Thunderbird
* Netscape web browser
Overview
The Mozilla web browser and derived products contain several
vulnerabilities, the most serious of which could allow a remote
attacker to execute arbitrary code on an affected system.
I. Description
Several vulnerabilities have been reported in the Mozilla web browser
and derived products. Mozilla has released three security advisories
to describe the vulnerabilities:
Mozilla Foundation Security Advisory 2006-67 addresses a remote
code execution vulnerability in the way JavaScript is handled by
Firefox, Thunderbird, and SeaMonkey. More information can be found
in VU#714496.
Mozilla Foundation Security Advisory 2006-66 addresses a
vulnerability in the way RSA signatures are handled by Firefox,
Thunderbird, and SeaMonkey. More information can be found in
VU#335392.
Mozilla Foundation Security Advisory 2006-65 addresses three memory
corruption vulnerabilities in Firefox, Thunderbird, and SeaMonkey.
More information can be found in VU#815432, VU#390480, and
VU#495288.
Any products based on Mozilla components, specifically Gecko, may also
be affected by VU#714496, VU#815432, VU#390480, and VU#495288.
Any software that uses the Mozilla Network Security Services (NSS)
library may be affected by VU#335392.
II. Impact
The most severe impact of these vulnerabilities could allow a remote
attacker to execute arbitrary code with the privileges of the user
running the affected application. Other effects include forging an RSA
signatures and denial of service. A remote, unauthenticated attacker
could execute arbitrary code, or cause a denial of service.
Forging an RSA signature (VU#335392) may allow an attacker to craft a
TLS/SSL or email certificate that will not be detected as invalid.
This may allow that attacker to impersonate a website or email system
that relies on certificates for authentication.
III. Solution
Upgrade
These vulnerabilities are addressed in Mozilla Firefox 1.5.0.8,
Mozilla Thunderbird 1.5.0.8, and SeaMonkey 1.0.6.
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.
IV. References
* Vulnerability Note VU#714496 -
<http://www.kb.cert.org/vuls/id/714496>
* Vulnerability Note VU#335392 -
<http://www.kb.cert.org/vuls/id/335392>
* Vulnerability Note VU#815432 -
<http://www.kb.cert.org/vuls/id/815432>
* Vulnerability Note VU#390480 -
<http://www.kb.cert.org/vuls/id/390480>
* Vulnerability Note VU#495288 -
<http://www.kb.cert.org/vuls/id/495288>
* Mozilla Foundation Security Advisories -
<http://www.mozilla.org/security/announce/>
* Known Vulnerabilities in Mozilla Products -
<http://www.mozilla.org/projects/security/known-vulnerabilities.html>
* Securing Your Web Browser -
<http://www.us-cert.gov/reading_room/securing_browser/browser_security.html#Mozilla_Firefox>
* 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/TA06-312A.html>
____________________________________________________________________
Feedback can be directed to US-CERT Technical Staff. Please send
email to <cert@xxxxxxxx> with "TA06-312A Feedback VU#335392" 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
November 08, 2006: Initial release
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