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Red Hat Security Advisory 2011-0959-01

Red Hat Security Advisory 2011-0959-01
Posted Jul 19, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-0959-01 - Mutt is a text-mode mail user agent. A flaw was found in the way Mutt verified SSL certificates. When a server presented an SSL certificate chain, Mutt could ignore a server hostname check failure. A remote attacker able to get a certificate from a trusted Certificate Authority could use this flaw to trick Mutt into accepting a certificate issued for a different hostname, and perform man-in-the-middle attacks against Mutt's SSL connections. All Mutt users should upgrade to this updated package, which contains a backported patch to correct this issue. All running instances of Mutt must be restarted for this update to take effect.

tags | advisory, remote
systems | linux, redhat
advisories | CVE-2011-1429
MD5 | b410278fef774d9b3df678d19a0a978e

Red Hat Security Advisory 2011-0959-01

Change Mirror Download
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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: mutt security update
Advisory ID: RHSA-2011:0959-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0959.html
Issue date: 2011-07-19
CVE Names: CVE-2011-1429
=====================================================================

1. Summary:

An updated mutt package that fixes one security issue is now available for
Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

3. Description:

Mutt is a text-mode mail user agent.

A flaw was found in the way Mutt verified SSL certificates. When a server
presented an SSL certificate chain, Mutt could ignore a server hostname
check failure. A remote attacker able to get a certificate from a trusted
Certificate Authority could use this flaw to trick Mutt into accepting a
certificate issued for a different hostname, and perform man-in-the-middle
attacks against Mutt's SSL connections. (CVE-2011-1429)

All Mutt users should upgrade to this updated package, which contains a
backported patch to correct this issue. All running instances of Mutt must
be restarted for this update to take effect.

4. Solution:

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

688755 - CVE-2011-1429 mutt: SSL host name check may be skipped when verifying certificate chain

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/mutt-1.5.20-2.20091214hg736b6a.el6_1.1.src.rpm

i386:
mutt-1.5.20-2.20091214hg736b6a.el6_1.1.i686.rpm
mutt-debuginfo-1.5.20-2.20091214hg736b6a.el6_1.1.i686.rpm

x86_64:
mutt-1.5.20-2.20091214hg736b6a.el6_1.1.x86_64.rpm
mutt-debuginfo-1.5.20-2.20091214hg736b6a.el6_1.1.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/mutt-1.5.20-2.20091214hg736b6a.el6_1.1.src.rpm

x86_64:
mutt-1.5.20-2.20091214hg736b6a.el6_1.1.x86_64.rpm
mutt-debuginfo-1.5.20-2.20091214hg736b6a.el6_1.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/mutt-1.5.20-2.20091214hg736b6a.el6_1.1.src.rpm

i386:
mutt-1.5.20-2.20091214hg736b6a.el6_1.1.i686.rpm
mutt-debuginfo-1.5.20-2.20091214hg736b6a.el6_1.1.i686.rpm

ppc64:
mutt-1.5.20-2.20091214hg736b6a.el6_1.1.ppc64.rpm
mutt-debuginfo-1.5.20-2.20091214hg736b6a.el6_1.1.ppc64.rpm

s390x:
mutt-1.5.20-2.20091214hg736b6a.el6_1.1.s390x.rpm
mutt-debuginfo-1.5.20-2.20091214hg736b6a.el6_1.1.s390x.rpm

x86_64:
mutt-1.5.20-2.20091214hg736b6a.el6_1.1.x86_64.rpm
mutt-debuginfo-1.5.20-2.20091214hg736b6a.el6_1.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/mutt-1.5.20-2.20091214hg736b6a.el6_1.1.src.rpm

i386:
mutt-1.5.20-2.20091214hg736b6a.el6_1.1.i686.rpm
mutt-debuginfo-1.5.20-2.20091214hg736b6a.el6_1.1.i686.rpm

x86_64:
mutt-1.5.20-2.20091214hg736b6a.el6_1.1.x86_64.rpm
mutt-debuginfo-1.5.20-2.20091214hg736b6a.el6_1.1.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2011-1429.html
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2011 Red Hat, Inc.
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