Mozilla protocol abuse

The Mozilla application platform currently has an unpatched input validation flaw which allows you to specify arbitrary command line arguments to any registered URL protocol handler process. Jesper Johansson already detailed parts of this on his blog on July 20, http://msinfluentials.com/blogs/jesper/. I wrote a vulnerability report on July 18 together with a proof-of-concept exploit that targeted Thunderbird 2.0.0.4.

Thunderbird 2.0.0.5 was released on July 19 and incidentally fixed this specific attack vector through its "osint" command line flag. It is now 6 days later and people should have had time to update their Thunderbird installations, so I have decided to publish my vulnerability report together with the exploits as they detail how to handle XPI exploitation.

The HTML version can be found at

http://larholm.com/2007/07/25/mozilla-protocol-abuse/

A ZIP file with the report and the XPI exploits can be found at

http://larholm.com/media/2007/7/mozillaprotocolabuse.zip


Cheers
Thor Larholm

Relevant Pages

  • [Full-disclosure] Mozilla protocol abuse
    ... validation flaw which allows you to specify arbitrary command line ... Thunderbird 2.0.0.5 was released on July 19 and incidentally fixed this ... so I have decided to publish my vulnerability report ... together with the exploits as they detail how to handle XPI exploitation. ...
    (Full-Disclosure)
  • Re: [Full-disclosure] Mozilla protocol abuse
    ... Does anyone know of a full list of Protocol handlers on the major browsers in a central location? ... Thunderbird 2.0.0.5 was released on July 19 and incidentally fixed this ... so I have decided to publish my vulnerability report ... together with the exploits as they detail how to handle XPI exploitation. ...
    (Bugtraq)
  • Re: [Full-disclosure] Mozilla protocol abuse
    ... Your mileage will vary not due to the browser but due to your installed applications, which is where local file detection vulnerabilities come in handy. ... Thunderbird 2.0.0.5 was released on July 19 and incidentally fixed this specific attack vector through its "osint" command line flag. ... It is now 6 days later and people should have had time to update their Thunderbird installations, so I have decided to publish my vulnerability report together with the exploits as they detail how to handle XPI exploitation. ... Hosted and sponsored by Secunia - http://secunia.com/ ...
    (Full-Disclosure)
  • Re: [Full-disclosure] Mozilla protocol abuse
    ... Does anyone know of a full list of Protocol handlers on the major browsers in a central location? ... Thunderbird 2.0.0.5 was released on July 19 and incidentally fixed this ... so I have decided to publish my vulnerability report ... Hosted and sponsored by Secunia - http://secunia.com/ ...
    (Full-Disclosure)