Scientific Linux Security Update : fetchmail on SL3.x, SL4.x, SL5.x i386/x86_64

This script is Copyright (C) 2012 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing a security update.

Description :

CVE-2007-4565 Fetchmail NULL pointer dereference

CVE-2008-2711 fetchmail: Crash in large log messages in verbose mode

CVE-2009-2666 fetchmail: SSL null terminator bypass

It was discovered that fetchmail is affected by the previously
published 'null prefix attack', caused by incorrect handling of NULL
characters in X.509 certificates. If an attacker is able to get a
carefully-crafted certificate signed by a trusted Certificate
Authority, the attacker could use the certificate during a
man-in-the-middle attack and potentially confuse fetchmail into
accepting it by mistake. (CVE-2009-2666)

A flaw was found in the way fetchmail handles rejections from a remote
SMTP server when sending warning mail to the postmaster. If fetchmail
sent a warning mail to the postmaster of an SMTP server and that SMTP
server rejected it, fetchmail could crash. (CVE-2007-4565)

A flaw was found in fetchmail. When fetchmail is run in double verbose
mode ('-v -v'), it could crash upon receiving certain, malformed mail
messages with long headers. A remote attacker could use this flaw to
cause a denial of service if fetchmail was also running in daemon mode
('-d'). (CVE-2008-2711)

If fetchmail is running in daemon mode, it must be restarted for this
update to take effect (use the 'fetchmail --quit' command to stop the
fetchmail process).

See also :

http://www.nessus.org/u?c2d44ad8

Solution :

Update the affected fetchmail package.

Risk factor :

Medium / CVSS Base Score : 6.4
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 60662 ()

Bugtraq ID:

CVE ID: CVE-2007-4565
CVE-2008-2711
CVE-2009-2666