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TITLE:
PHPads Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA33580

VERIFY ADVISORY:
https://secunia.com/advisories/33580/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass, Cross Site Scripting, Exposure of sensitive
information

WHERE:
>From remote

REVISION:
2.0 originally posted 2009-01-20

SOFTWARE:
PHPads 2.x
https://secunia.com/advisories/product/21068/

DESCRIPTION:
Danny Moules has discovered a security issue and a vulnerability in
PHPads, which can be exploited by malicious people to disclose
sensitive information and by malicious users to conduct script
insertion attacks.

1) The security issue is caused due to improper access restrictions
to the "ads.dat" file. This can be exploited to disclose the
administrator's user name and password hash by requesting the file
directly.

Successful exploitation allows to bypass the authentication mechanism
by creating the cookies "user" and "pass" and assigning them the
corresponding values taken from the ads.dat file.

2) Input passed to the "ad_name" parameter in admin.php is not
properly sanitised before being used. This can be exploited to insert
arbitrary HTML and script code, which will be executed in a user's
browser session in the context of an affected site when the malicious
ad is viewed (e.g. in admin.php when "action" is set to "list").

These vulnerabilities are confirmed in version 2.0. Other versions
may also be affected.

SOLUTION:
Move the ads.dat file out of the web root.
Edit the source code to ensure that input is properly sanitised.

PROVIDED AND/OR DISCOVERED BY:
Danny Moules

CHANGELOG:
2009-01-20: Added vulnerability #2. Updated "Title", "Impact", and
"Solution" sections.

ORIGINAL ADVISORY:
https://www.push55.co.uk/index.php?s=ad&id=5
https://www.push55.co.uk/poclibrary/blondishnet-1.txt

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