Multiple SQL injection vulnerabilities in the getip function in wp-limit-login-attempts.php in the WP Limit Login Attempts plugin before 2.0.1 for WordPress allow remote attackers to execute arbitrary SQL commands via the (1) X-Forwarded-For or (2) Client-IP HTTP header.
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.