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TITLE:
Ultimate PHP Board Cross-Site Scripting and User Credentials Exposure

SECUNIA ADVISORY ID:
SA15732

VERIFY ADVISORY:
http://secunia.com/advisories/15732/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting, Exposure of sensitive information

WHERE:
>From remote

SOFTWARE:
Ultimate PHP Board (UPB) 1.x
http://secunia.com/product/423/

DESCRIPTION:
Alberto Trivero has reported some vulnerabilities and a security
issue in Ultimate PHP Board, which can be exploited by malicious
people to conduct cross-site scripting attacks and disclose sensitive
information.

1) Some input isn't properly sanitised before being returned to
users. This can be exploited to execute arbitrary HTML and script
code in a user's browser session in context of a vulnerable site.

Examples:
http://[host]/login.php?ref=[code]
http://[host]/viewtopic.php?id=[code]
http://[host]/viewtopic.php?id=1&t_id=1&page=[code]
http://[host]/profile.php?action=get&id=[code]
http://[host]/newpost.php?id=1&t=1&t_id=[code]
http://[host]/newpost.php?id=[code]
http://[host]/email.php?id=[code]
http://[host]/icq.php?action=get&id=[code]
http://[host]/upb/aol.php?action=get&id=[code]
http://[host]/upb/getpass.php?ref=[code]
http://[host]/search.php?step=3&sText=[code]

2) User credentials are stored in the "db" database directory inside
the web root, which may allow disclosure of the usernames and
encrypted passwords.

NOTE: This does not affect installations with enabled support for
".htaccess" files.

It is also possible to disclose the full path to certain scripts by
accessing them with some invalid input.

The vulnerabilities and the security issue have been reported in
version 1.9.6 GOLD and prior.

SOLUTION:
1) Edit the source code to ensure that input is properly sanitised.
2) Restrict access to the "db" directory.

PROVIDED AND/OR DISCOVERED BY:
Alberto Trivero

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About:
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