FreeBSD : fetchmail -- insecure APOP authentication (f1c4d133-e6d3-11db-99ea-0060084a00e5)

This script is Copyright (C) 2007-2013 Tenable Network Security, Inc.

Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

Matthias Andree reports :

The POP3 standard, currently RFC-1939, has specified an optional,
MD5-based authentication scheme called 'APOP' which no longer should
be considered secure.

Additionally, fetchmail's POP3 client implementation has been
validating the APOP challenge too lightly and accepted random garbage
as a POP3 server's APOP challenge. This made it easier than necessary
for man-in-the-middle attackers to retrieve by several probing and
guessing the first three characters of the APOP secret, bringing brute
forcing the remaining characters well within reach.

See also :

Solution :

Update the affected package.

Risk factor :

Low / CVSS Base Score : 2.6

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 25018 (freebsd_pkg_f1c4d133e6d311db99ea0060084a00e5.nasl)

Bugtraq ID:

CVE ID: CVE-2007-1558

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