Fetchmail is a remote mail retrieval and forwarding utility.
A buffer overflow was discovered in fetchmail's POP3 client. A malicious server could cause send a carefully crafted message UID and cause fetchmail to crash or potentially execute arbitrary code as the user running fetchmail. The Common Vulnerabilities and Exposures project assigned the name CAN-2005-2335 to this issue.
Users of fetchmail should update to this erratum package which contains a backported patch to correct this issue.