Multiple unspecified vulnerabilities in Dovecot before 1.0beta3 allow remote attackers to cause a denial of service (application crash or hang) via unspecified vectors involving (1) "potential hangs" in the APPEND command and "potential crashes" in (2) dovecot-auth and (3) imap/pop3-login. NOTE: vector 2 might be related to a double free vulnerability.
Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.