Buffer overflow on oversized POP3 UIDL reply.
vulners.com/securityvulns/securityvulns:doc:13685
vulners.com/securityvulns/securityvulns:doc:9290
vulners.com/securityvulns/securityvulns:doc:9304
vulners.com/securityvulns/securityvulns:doc:9625