Dotclear <= 2.6.2 (categories.php) SQL Injection Vulnerability

• 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
71if (!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.