Opera onUnload URL spoofing

opera-onunload-url-spoofing (16131) The risk level is classified as MediumMedium Risk

Description:

Opera could allow a remote attacker to spoof a trusted Web page by altering the URL that is displayed in the address bar. A remote attacker could modify the HTML onUnload attribute in such a way that a redirection to another Web site is not displayed in the address bar. An attacker could use this vulnerability to gain sensitive information from unsuspecting users.


Consequences:

Obtain Information

Remedy:

Upgrade to the latest version of Opera (7.50 or later), available from the Opera Web site. See References.

References:

  • Opera Web site: Opera Internet Browser.
  • BID-10337: Opera Web Browser Address Bar Spoofing Weakness
  • CVE-2004-2260: Opera Browser 7.23, and other versions before 7.50, updates the address bar as soon as the user clicks a link, which allows remote attackers to redirect to other sites via the onUnload attribute.
  • OSVDB ID: 6108: Opera onUnload Address Bar Spoofing
  • SA11532: Opera Browser Address Bar Spoofing Vulnerability

Platforms Affected:

  • Opera Opera Browser 7.23

Reported:

May 13, 2004

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