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Request #40470 Invalid session id should specify actual ID
Submitted: 2007-02-14 00:07 UTC Modified: 2013-08-08 02:56 UTC
From: ceo at l-i-e dot com Assigned: yohgaki (profile)
Status: Wont fix Package: Session related
PHP Version: 5.2.1 OS: *
Private report: No CVE-ID: None
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From: ceo at l-i-e dot com
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 [2007-02-14 00:07 UTC] ceo at l-i-e dot com 
Description:
------------
A message such as this:
[04-Dec-2006 18:21:56] PHP Warning:  Unknown: The session id contains
illegal characters, valid characters are a-z, A-Z, 0-9 and '-,' in Unknown
on line 0
should be improved to specify the actual invalid ID.

A busy site with many sessions will need that info to trace down the bug quickly.


Expected result:
----------------
Something like this:

[04-Dec-2006 18:21:56] PHP Warning:  Unknown: The session id '$#!^' contains
illegal characters, valid characters are a-z, A-Z, 0-9 and '-,' in Unknown
on line 0

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 [2011-02-21 21:15 UTC] jani@php.net
-Package: Feature/Change Request +Package: Session related -Operating System: all +Operating System: *
 [2012-03-31 03:24 UTC] yohgaki@php.net
-Assigned To: +Assigned To: yohgaki
 [2013-08-08 02:56 UTC] yohgaki@php.net
-Status: Assigned +Status: Wont fix
 [2013-08-08 02:56 UTC] yohgaki@php.net 
Writing user inputs to log can be cause of security issues. Invalid session ID 
chars is obvious attack and you should take countermeasure rather than logging 
it.  

Are you using session autostart? If so, I would suggest start session manually, 
register your own error handler that logs IP address when error occurred 
*before* starting session.
 
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