On Sep 29, 2011, at 3:05 PM, Andrew Petro wrote:

> It is the case that an adversary intercepting a service ticket and then 
> validating it against the attribute-release-supporting SAML endpoint in CAS 
> is sufficient to lay hands on whatever user attributes would be released to 
> the legitimate application for which the ST was intended.

Provided they could: 1) block the intended recipient from receiving the ticket 
or 2) beat the intended recipient in a race to use the ticket or 3) block the 
recipient from using the ticket against the CAS server? Or is there something 
I'm missing there.

Thanks for the explanation on proxy security, btw.<html><head></head><body 
style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: 
after-white-space; "><div><div>On Sep 29, 2011, at 3:05 PM, Andrew Petro 
wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span 
class="Apple-style-span" style="border-collapse: separate; font-family: 
Helvetica; font-style: normal; font-variant: normal; font-weight: normal; 
letter-spacing: normal; line-height: normal; orphans: 2; text-align: 
-webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; 
widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; 
-webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; 
-webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: 
medium; ">It is the case that an adversary intercepting a service ticket and 
then validating it against the attribute-release-supporting SAML endpoint in 
CAS is sufficient to lay hands on whatever user attributes would be released to 
the legitimate application for which the ST was 
intended.</span></blockquote></div><br><div>Provided they could: 1) block the 
intended recipient from receiving the ticket or 2) beat the intended recipient 
in a race to use the ticket or 3) block the recipient from using the ticket 
against the CAS server? Or is there something I'm missing 
there.</div><div><br></div><div>Thanks for the explanation on proxy security, 
btw.</div></body></html>
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