#VU25673 Origin validation error in CardGate Payments for WooCommerce - CVE-2020-8819

Vulnerability identifier: #VU25673

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green

CVE-ID: CVE-2020-8819

CWE-ID: CWE-346

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerable software:
CardGate Payments for WooCommerce

Software vendor:
CardGate

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a lack of origin authentication at IPN callback processing function. A remote attacker can replace critical plugin settings (merchant id, secret key etc) with known to him and therefore bypass payment process (eg. spoof order status by manually sending IPN callback request with a valid signature but without real payment) and/or receive all subsequent payments (on behalf of the store).

Install updates from vendor's website.

• http://packetstormsecurity.com/files/156504/WordPress-WooCommerce-CardGate-Payment-Gateway-3.1.15-Bypass.html
• https://github.com/cardgate/woocommerce/blob/f2111af7b1a3fd701c1c5916137f3ac09482feeb/cardgate/cardgate.php#L426-L442
• https://github.com/cardgate/woocommerce/issues/18
• https://wpvulndb.com/vulnerabilities/10097
• https://www.exploit-db.com/exploits/48134