-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I am still unable to replicate. It launches FireFox (2.0.0.7) for me on my system and yeilds the error page "Firefox can't find the server at %xx..." If I replace the "%xx" with a null byte (inspired by the recent protocol handler problems in FF), then it still doesn't work, as per the mIRC string: http: $+ $chr(0) $+ ../../../../../../../../../../../windows/system32/calc.exe" So far, with various permutations of protocol handlers and odd characters, I can't reproduce this. Greg 3APA3A wrote: > Dear Gavin Hanover, > > In this very case it's really seems to be mIRC problem ("unfiltered > shell characters"). It doesn't depend on URL handler and will work with > any valid URL handler. You can reproduce same vulnerability by entering > > http:%xx../../../../../../../../../../../windows/system32/calc.exe".bat > > Exploitable under Windows XP, not exploitable under Vista. > > --Wednesday, October 3, 2007, 11:59:45 PM, you wrote to jinc4fareijj@xxxxxxxxxxx: > > GH> is this a mirc bug or a mail client bug? > >>> mailto:%xx../../../../../../../../../../../windows/system32/calc.exe".bat >>> > - -- Greg Rubin grrubin@xxxxxxxxx GPG: 0x79D0A517 (Interested in encrypting your email? Please ask me how.) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHBQ715KDU23nQpRcRAm4UAKCv4xq/V4pz+uAlPBmb06yEGN4MKQCg7lk1 9JOhTzWLeJs/N4OCjSRuNKk= =//Ll -----END PGP SIGNATURE-----