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Category:   Application (Web Browser)  >   Opera Vendors:   Opera Software
Opera Bugs Let Remote Users Obtain Potentially Sensitive Information and Communicate Across Domains
SecurityTracker Alert ID:  1026381
SecurityTracker URL:  http://securitytracker.com/id/1026381
CVE Reference:   CVE-2011-4681, CVE-2011-4682, CVE-2011-4683, CVE-2011-4684   (Links to External Site)
Updated:  Dec 8 2011
Original Entry Date:  Dec 7 2011
Impact:   Disclosure of system information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 11.60
Description:   Several vulnerabilities were reported in Opera. A remote user can obtain potentially sensitive information. A remote user can communicate across domains in certain cases.

The browser does not properly manage domain restrictions for two-letter top level domains and some three-letter top level domains. As a result, some domains can set cookies for domains outside of their subdomains [CVE-2011-4681].

Certain certificate revocation corner cases were not handled properly [CVE-2011-4684]. The impact was not specified.

A remote user with the ability to conduct a man-in-the-middle attack can decrypt SSL/TLS sessions. Thai Duong and Juliano Rizzo reported this vulnerability.

The JavaScript 'in' operator does not properly restrict cross-domain access [CVE-2011-4682]. A remote user can determine if variables in other domains exist or not. David Bloom reported this vulnerability.

An unspecified flaw was reported to have "moderately severe" impact [CVE-2011-4683].

Impact:   A remote user can obtain potentially sensitive information.

A remote user can communicate across domains in certain cases.

Solution:   The vendor has issued a fix (11.60).

The vendor's advisories are available at:

http://www.opera.com/docs/changelogs/windows/1160/
http://www.opera.com/docs/changelogs/mac/1160/
http://www.opera.com/docs/changelogs/unix/1160/

Vendor URL:  www.opera.com/support/kb/view/1003/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (FreeBSD), UNIX (macOS/OS X), Windows (Any)

Message History:   None.


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