Mr_KaLiMaN has discovered several vulnerabilities in AnnonceScriptHP, which can be exploited by malicious people to disclose sensitive data, conduct SQL injection and conduct cross-site scripting attacks.

1) A vulnerability due to insufficient checks in admin/admin_membre/fiche_membre.php lets unauthenticated people view any user's password and other user details by passing the "idmembre" parameter.

2) Input passed to the "no" parameter in voirannonce.php, "idmembre" in admin/admin_membre/fiche_membre.php, "idannonce" in admin/admin_annonce/okvalannonce.php and admin/admin_annonce/changeannonce.php, and "id" in email.php is not properly sanitised before being used in SQL queries. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.

Successful exploitation of email.php requires valid user credentials.

3) Input passed to the "email" parameter in erreurinscription.php, Templates/admin.dwt.php, Templates/commun.dwt.php, Templates/membre.dwt.php, and admin/admin_config/Aide.php is not properly sanitised before it is 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.

Successful exploitation requires that "register_globals" is enabled.

The vulnerabilities are confirmed in version 2.0 (demo). Other versions may also be affected.

Solution
Edit the source code to ensure that input is properly sanitised.
Further details available in Customer Area

Provided and/or discovered by
Mr_KaLiMaN

Deep Links
Links available in Customer Area