Hi,

At 08:18 14-8-2002, Yasuo Ohgaki wrote:

>Rasmus Lerdorf wrote:
>>As much as I think trans-sid sucks from a performance perspective, what's
>>with this comment in php.ini-dist?
>>; trans sid support is disabled by default.
>>; Use of trans sid may risk your users security. It may not be
>>; feasible to use this option for some sites. Use this option with caution.
>>session.use_trans_sid = 0
>>What security issue is this referring to?
>
>One of security risk is sending URL that contains
>active session ID to others.

Using sessions as the only method for authentication en permission grants 
is a security risk, regardless of the client-side storage of the session 
ID. It's easy enough to send a cookie to somebody else.

>Another is storing URL that contains session
>ID to history. Computer may be public one.
>User may access server with the same session ID
>always. etc

If this is a public computer (I think you mean like in an internet cafe or 
library) the same applies to cookies, only then it's less obvious, so I'd 
say trans-sid is more secure.

The 'always' factor depends on the session timeout. If there is no session 
with that id, the session ID is worthless.



Met vriendelijke groeten / With kind regards,

Webmaster IDG.nl
Melvyn Sopacua


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