CWE-523: Unprotected Transport of Credentials
Login pages do not use adequate measures to protect the user name and password while they are in transit from the client to the server.
Overview
CWE-523 (Unprotected Transport of Credentials) is a base-level software weakness catalogued by MITRE in the Common Weakness Enumeration (CWE). It describes a recurring type of mistake that can lead to exploitable security vulnerabilities.
Background
SSL (Secure Socket Layer) provides data confidentiality and integrity to HTTP. By encrypting HTTP messages, SSL protects from attackers eavesdropping or altering message contents.