Re: Certificate spoofing issue with Mozilla, Konqueror, Safari 2

2007-11-20 Thread Nils Toedtmann
Am Dienstag, den 20.11.2007, 00:51 +0200 schrieb Kapetanakis Giannis: On Sun, 18 Nov 2007, Nils Toedtmann wrote: Mozilla based browsers (Firefox, Netscape, ...), Konqueror and Safari 2 do not bind a user-approved webserver certificate to the originating domain name. This makes the user

Re: Certificate spoofing issue with Mozilla, Konqueror, Safari 2

2007-11-20 Thread Kapetanakis Giannis
On Tue, 20 Nov 2007, Mark Senior wrote: If I subsequently visit my bank's website, and I get no SSL warning, it should ing well mean the certificate is valid. However, vendors seem to head towards strong hostname binding. MSIE, Opera and Safari 3 already do so. Mozilla-1.9/Firefox-3 will

Certificate spoofing issue with Mozilla, Konqueror, Safari 2

2007-11-19 Thread Nils Toedtmann
Moin * Mozilla based browsers (Firefox, Netscape, ...), Konqueror and Safari 2 do not bind a user-approved webserver certificate to the originating domain name. This makes the user vulnerable to certificate spoofing by subjectAltName:dNSName extensions. I set up a demonstration at

Re: Certificate spoofing issue with Mozilla, Konqueror, Safari 2

2007-11-19 Thread Kapetanakis Giannis
On Sun, 18 Nov 2007, Nils Toedtmann wrote: Mozilla based browsers (Firefox, Netscape, ...), Konqueror and Safari 2 do not bind a user-approved webserver certificate to the originating domain name. This makes the user vulnerable to certificate spoofing by subjectAltName:dNSName extensions. ...

Re: Certificate spoofing issue with Mozilla, Konqueror, Safari 2

2007-11-19 Thread Graeme Fowler
Hi On Tue, 2007-11-20 at 00:51 +0200, Kapetanakis Giannis wrote: ps. I've just discovered this: http://www.g-loaded.eu/2007/08/10/ssl-enabled-name-based-apache-virtual-hosts-with-mod_gnutls/ rfc3546 defines Server Name Indication (SNI) extention which is used by mod_gnutls for tls name

Re: Certificate spoofing issue with Mozilla, Konqueror, Safari 2

2007-11-19 Thread Michal Zalewski
On Tue, 20 Nov 2007, Kapetanakis Giannis wrote: I would consider this a feature of the X509 standard and not a bug. The behavior is remarkably counterintuitive. It could be reasonably expected for the browser to properly communicate the situation (show a list of aliases) to the user, or better