Smokey's Security Weblog

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IE6 zero-day cross-site scripting bug reported

Security researchers are warning users about an unpatched cross-site scripting bug in Internet Explorer 6 (IE6) that could be used by hackers to capture keystrokes and steal other information.

At BlueHat, researcher Manuel Caballero, who has worked for Microsoft as an independent penetration tester, said he had found a way to capture every browser action, including keystrokes used to type passwords. In a videotaped interview that Microsoft conducted during BlueHat, Caballero said that the combination of Flash and any browser, not just IE, could be hacked with a malicious script to give attackers full access to the browser.

The vulnerability is caused due to an input validation error when handling the ‘location’ or ‘location.href’ property of a window object. This can be exploited by a malicious website to open a trusted site and execute arbitrary script code in a user’s browser session in context of the trusted site.

IE7, the current version of Microsoft’s browser, does not contain the vulnerability, both Secunia and McAfee said. Until Microsoft produces a patch for the older browser, users should update to IE7, they added.

Sources: ComputerWorld, Secunia, McAfee

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June 27, 2008 - Posted by | Advisories, Alerts, Malware, News, Recommended External Security Related Links, Vulnerabilities | , , , , , , , , , , ,

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