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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
Mozilla Firefox Discloses Client-Side Certificates to Remote Users
SecurityTracker Alert ID:  1019704
SecurityTracker URL:  http://securitytracker.com/id/1019704
CVE Reference:   CVE-2007-4879   (Links to External Site)
Date:  Mar 26 2008
Impact:   Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): prior to 2.0.0.13
Description:   A vulnerability was reported in Mozilla Firefox. A remote user can determine the target user's common name from the user's client-side certificate.

The default setting for SSL Client Authentication causes the browser to automatically and silently send the user's certificate when the target user's browser connects to a secure web site. A remote server can obtain information from the target user's digital certificate.

Peter Brodersen and Alexander Klink independently reported this vulnerability.

Impact:   A remote user can obtain information from the target user's digital certificate.
Solution:   The vendor has issued a fix (2.0.0.13).

The Mozilla advisory is available at:

http://www.mozilla.org/security/announce/2008/mfsa2008-17.html

Vendor URL:  www.mozilla.org/security/announce/2008/mfsa2008-17.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Mar 26 2008 (Mozilla Issues Fix for Seamonkey) Mozilla Firefox Discloses Client-Side Certificates to Remote Users
Mozilla has issued a fix for Seamonkey.



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