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securityvulnsSecurityvulnsSECURITYVULNS:DOC:22008
HistoryJun 14, 2009 - 12:00 a.m.

Secunia Research: Mozilla Firefox Java Applet Loading Vulnerability

2009-06-1400:00:00
vulners.com
22

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                 Secunia Research 12/06/2009

    - Mozilla Firefox Java Applet Loading Vulnerability -

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Table of Contents

Affected Software…1
Severity…2
Vendor's Description of Software…3
Description of Vulnerability…4
Solution…5
Time Table…6
Credits…7
References…8
About Secunia…9
Verification…10

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1) Affected Software

  • Firefox 3.0.7, 3.0.8, and 3.0.9 for Windows with JRE 6 Update 13

NOTE: Other versions may also be affected.

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2) Severity

Rating: Highly critical
Impact: System compromise
Where: Remote

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3) Vendor's Description of Software

"The award-winning Firefox Web browser has security, speed and new
features that will change the way you use the Web. Don’t settle for
anything less.".

Product Link:
http://www.mozilla.com/firefox/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Firefox, which can
be exploited by malicious people to potentially compromise a user's
system.

The vulnerability is caused due to a race condition when accessing the
private data of an NPObject JS wrapper class object if navigating away
from a web page while loading a Java applet. This can be exploited via
a specially crafted web page to use already freed memory.

Successful exploitation may allow execution of arbitrary code.

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5) Solution

Update to version 3.0.11.

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6) Time Table

26/03/2009 - Vendor notified.
01/04/2009 - Vendor notified (2nd attempt).
01/04/2009 - Vendor response.
12/06/2009 - Public disclosure.

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7) Credits

Discovered by Jakob Balle and Carsten Eiram, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2009-1837 for the vulnerability.

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9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://secunia.com/advisories/business_solutions/

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private
individuals, who are interested in or concerned about IT-security.

http://secunia.com/advisories/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the
security and reliability of software in general:

http://secunia.com/secunia_research/

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/corporate/jobs/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/advisories/mailing_lists/

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10) Verification

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-19/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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