An updated mutt package that fixes several security bugs is now available for
Red Hat Enterprise Linux 3, 4 and 5.
This update has been rated as having moderate security impact by the Red
Hat Security Response Team.
Mutt is a text-mode mail user agent.
A flaw was found in the way Mutt used temporary files on NFS file systems.
Due to an implementation issue in the NFS protocol, Mutt was not able to
exclusively open a new file. A local attacker could conduct a
time-dependent attack and possibly gain access to e-mail attachments opened
by a victim. (CVE-2006-5297)
A flaw was found in the way Mutt processed certain APOP authentication
requests. By sending certain responses when mutt attempted to authenticate
against an APOP server, a remote attacker could potentially acquire certain
portions of a user's authentication credentials. (CVE-2007-1558)
A flaw was found in the way Mutt handled certain characters in gecos fields
which could lead to a buffer overflow. The gecos field is an entry in the
password database typically used to record general information about the
user. A local attacker could give themselves a carefully crafted "Real
Name" which could execute arbitrary code if a victim uses Mutt and expands
the attackers alias. (CVE-2007-2683)
All users of mutt should upgrade to this updated package, which
contains a backported patches to correct these issues.