passwd vulnerabilities

PassWD 1.2 uses weak encryption (trivial encoding) to store passwords, allowing an attacker with access to the password file to easily decrypt the passwords.

Vulnerability in passwd in SCO UNIX 4.0 and earlier allows attackers to cause a denial of service by preventing users from being able to log into the system.

Buffer overflow in passwd in BSD based operating systems 4.3 and earlier allows local users to gain root privileges by specifying a long shell or GECOS field.