J-Security Center

Title: Google Chrome 'About:blank' Address Bar URI Spoofing Vulnerability

Severity: MODERATE


Google Chrome is a web browser.

The application is affected by a URI-spoofing vulnerability. The problem occurs when displaying an 'About:blank' page generated from a malicious site while navigating to a legitimate site. Specifically, a 'window.open()' call with a URI containing an invalid character will trigger an error page, but the URI displayed in the address bar will look legitimate. The attacker can further obfuscate the displayed URI by padding it with space ('%20') characters, hiding the invalid character.

The attacker can trick a victim into following a specially crafted URI that can display arbitrary content on the page, while displaying the URI of a legitimate site in the address bar. This may lead to a false sense of trust.

Chrome is vulnerable; other versions may also be affected.

This issue is similar to the vulnerabilities discussed in BID 35803 (Mozilla Firefox Error Page Address Bar URI Spoofing Vulnerability) and BID 35829 (Apple Safari Error Page Address Bar URI Spoofing Vulnerability).

Affected Products:

  • Google Chrome
  • Google Chrome
  • Google Chrome
  • Google Chrome


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