IBM AS400 and iSeries POP3 Server Remote Information Disclosure
Medium Nessus Plugin ID 18046
SynopsisThe remote POP server is affected by an information disclosure vulnerability.
DescriptionThe remote host appears to be running the POP3 service that comes with all modern AS/400 and iSeries servers. Further, this service is prone to an information disclosure vulnerability due to the responses it provides to username / password combinations. This allows a remote attacker to determine valid user profiles. Further, the service offers a means of brute forcing passwords since it does not block a connection or disable a user after a given number of invalid login attempts.
SolutionDisable the POP3 service if not needed.