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TITLE:
myPHPscripts Login Session Cross-Site Scripting and Information
Disclosure

SECUNIA ADVISORY ID:
SA33253

VERIFY ADVISORY:
http://secunia.com/advisories/33253/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting, Exposure of sensitive information

WHERE:
>From remote

SOFTWARE:
myPHPscripts Login Session 2.x
http://secunia.com/advisories/product/20829/

DESCRIPTION:
Osirys has discovered a security issue and some vulnerabilities in
myPHPscripts Login Session, which can be exploited by malicious
people to conduct cross-site scripting attacks or disclose sensitive
information.

1) Input passed to the "ls_user" and "ls_email" parameters in
login.php is not properly sanitised when registering before being
returned to the user. This can be exploited to execute arbitrary HTML
and script code in a user's browser session in context of an affected
site.

2) The security issue is caused due to the "users.txt" file being
stored with insecure permissions inside the web root. This can be
exploited to gain knowledge of sensitive information by downloading
the file.

The security issue and the vulnerability are confirmed in version
2.0. Other versions may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised. Move
the users.txt file outside the web root.

PROVIDED AND/OR DISCOVERED BY:
Osirys

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/7526

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