Paypal Checkout Payment Gateway: A security weakness

Paypal Checkout Payment Gateway is affected by a security weakness. Exposure depends on how the affected operation is made reachable by the site. The resulting impact depends on how the affected component exposes the vulnerable operation.

CVE / CNA score 6.5 CVSS · cve@mitre.org

NVD score 6.5 CVSS 3.0 · nvd@nist.gov

Component: Paypal Checkout Payment Gateway
Plugin slug: paypal-checkout-payment-gateway
Affected: See vendor advisory
Safe version: See mitigation notes
Published: Mar 21, 2019
Weakness: NVD-CWE-noinfo

This CVE was published Mar 21, 2019 and is one of 2 known issues for this plugin.

What to do

Update, patch or deactivate.

Update Paypal Checkout Payment Gateway to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

cgi-bin/webscr?cmd=_cart in the WooCommerce PayPal Checkout Payment Gateway plugin 1.6.8 for WordPress allows Parameter Tampering in an amount parameter (such as amount_1), as demonstrated by purchasing an item for lower than the intended price. NOTE: The plugin author states it is true that the amount can be manipulated in the PayPal payment flow. However, the amount is validated against the WooCommerce order total before completing the order, and if it doesn’t match then the order will be left in an “On Hold” state

NVD vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References

Update, patch or deactivate.

Technical description

Primary and upstream sources