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Dotclear <= 2.6.2 (categories.php) SQL Injection Vulnerability
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[-] Software Link:

http://dotclear.org/


[-] Affected Versions:

Version 2.6.2 and probably prior versions.


[-] Vulnerability Description:

The vulnerable code is located in /admin/categories.php:

70.  # Update order
71.  if (!empty($_POST['save_order']) && !empty($_POST['categories_order'])) {
72.    $categories = json_decode($_POST['categories_order']);
73.  
74.    foreach ($categories as $category) {
75.      if (!empty($category->item_id)) {
76.        $core->blog->updCategoryPosition($category->item_id, $category->left, $category->right);
77.      }
78.    }
79.  
80.    dcPage::addSuccessNotice(__('Categories have been successfully reordered.'));
81.    http::redirect('categories.php');
82.  }

User input passed through the $_POST['categories_order'] parameter is not properly sanitized before being used in a
call to the dcBlog::updCategoryPosition() method at line 76. This could be exploited to conduct SQL injection attacks
leveraging the UPDATE statement defined in the nestedTree::updatePosition() method. Successful exploitation of this
vulnerability requires an account with the “manage categories” permission.


[-] Solution:

Update to version 2.6.3.


[-] Disclosure Timeline:

[14/05/2014] - Vendor notified
[15/05/2014] - Vendor response
[16/05/2014] - Version 2.6.3 released: http://dotclear.org/blog/post/2014/05/16/Dotclear-2.6.3
[16/05/2014] - CVE number requested
[19/05/2014] - CVE number assigned
[21/05/2014] - Public disclosure


[-] CVE Reference:

The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2014-3783 to this vulnerability.


[-] Credits:

Vulnerability discovered by Egidio Romano.


[-] Original Advisory:

http://karmainsecurity.com/KIS-2014-07