The Ultimate SMS Notifications for WooCommerce plugin for WordPress is vulnerable to CSV Injection in versions up to, and including, 1.4.1 via the Export Utility functionality. This makes it possible for authenticated attackers, such as a subscriber, to add untrusted input into billing information like their First Name that will embed into the exported CSV file triggered by an administrator and can result in code execution when these files are downloaded and opened on a local system with a vulnerable configuration.
Weakness
The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as control elements or syntactic markers when they are sent to a downstream component.
Affected Software
| Name |
Vendor |
Start Version |
End Version |
| Ultimate_sms_notifications_for_woocommerce |
Ultimatesmsnotifications |
* |
1.4.1 (including) |
Potential Mitigations
- Assume all input is malicious. Use an “accept known good” input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, “boat” may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as “red” or “blue.”
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code’s environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
References