The IMAP-over-SSL implementation in getmail 4.44.0 does not verify that the server hostname matches a domain name in the subject's Common Name (CN) field of the X.509 certificate, which allows man-in-the-middle attackers to spoof IMAP servers and obtain sensitive information via a crafted certificate from a recognized Certification Authority.
La implementación IMAP-over-SSL en getmail 4.44.0 no verifica que el nombre del servidor coincide con un nombre de dominio en el campo del asunto Common Name (CN) del certificado X.509, lo que permite a atacantes man-in-the-middle falsificar servidores IMAP y obtener información sensible a través de un certificado manipulado de una autoridad de certificación reconocido.
Several vulnerabilities have been discovered in getmail4, a mail retriever with support for POP3, IMAP4 and SDPS, that could allow man-in-the-middle attacks.
