[KIS-2014-07] Dotclear <= 2.6.2 (categories.php) SQL Injection Vulnerability

[Egidio Romano <research@xxxxxxxxxxxxxxxxxxx>]

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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