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Opera Users Advised to Upgrade to Version 8.1

A Pair of Moderately Critical Flaws Discovered in Earlier Version

Three vulnerabilities in the Opera browser have been reported by Danish security firm Secunia Research. Two were termed "moderately critical," and the third was termed "less critical."

All can be resolved by users downloading version 8.1 of the Opera browser.

Version 8 was announced with some fanfare a few weeks ago, and had more than one million downloads over its first week-end of availability. The company has subsequently reported more than 4 million downloads.

The first moderately critical vulnerability "can be exploited by malicious people to steal content or to perform actions on other web sites with the privileges of the user, "according to Secunia. Due to insufficient validation of server side redirects, the vulnerability makes it possible to circumvent a restriction on making the XMLHttpRequest object access resources from outside the domain of which the object was opened.

The second moderately critical flaw "which can be exploited by malicious people to conduct cross-site scripting attacks and to read local files," according to Secunia, is "caused by earlier versions of Opera, including 8,  not properly restricting the privileges of javascript URLs when opened in new windows or frames.

The less critical problem  is caused due "to input not being sanitized when Opera generates a temporary page for displaying a redirection when 'Automatic redirection' is disabled (not default setting)," according to Secunia. The firm notes that this flaw was first discovered in Opera versions 6.x and 7.x, but was reintroduced with the release of Opera 8.



More Stories By Jeremy Geelan

Jeremy Geelan is Chairman & CEO of the 21st Century Internet Group, Inc. and an Executive Academy Member of the International Academy of Digital Arts & Sciences. Formerly he was President & COO at Cloud Expo, Inc. and Conference Chair of the worldwide Cloud Expo series. He appears regularly at conferences and trade shows, speaking to technology audiences across six continents. You can follow him on twitter: @jg21.

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