Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2011.0582
Moderate: postfix security update
1 June 2011
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: postfix
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Desktop 4
Red Hat Enterprise Linux AS/ES/WS 4
Red Hat Enterprise Linux Server 5
Red Hat Enterprise Linux WS/Desktop 5
Red Hat Enterprise Linux Server 6
Red Hat Enterprise Linux WS/Desktop 6
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2011-1720
Reference: ESB-2011.0509
Original Bulletin:
https://rhn.redhat.com/errata/RHSA-2011-0843.html
- --------------------------BEGIN INCLUDED TEXT--------------------
- -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Moderate: postfix security update
Advisory ID: RHSA-2011:0843-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-0843.html
Issue date: 2011-05-31
CVE Names: CVE-2011-1720
=====================================================================
1. Summary:
Updated postfix packages that fix one security issue are now available for
Red Hat Enterprise Linux 4, 5, and 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 (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64
3. Description:
Postfix is a Mail Transport Agent (MTA), supporting LDAP, SMTP AUTH (SASL),
and TLS.
A heap-based buffer over-read flaw was found in the way Postfix performed
SASL handlers management for SMTP sessions, when Cyrus SASL authentication
was enabled. A remote attacker could use this flaw to cause the Postfix
smtpd server to crash via a specially-crafted SASL authentication request.
The smtpd process was automatically restarted by the postfix master process
after the time configured with service_throttle_time elapsed.
(CVE-2011-1720)
Note: Cyrus SASL authentication for Postfix is not enabled by default.
Red Hat would like to thank the CERT/CC for reporting this issue. Upstream
acknowledges Thomas Jarosch of Intra2net AG as the original reporter.
Users of Postfix are advised to upgrade to these updated packages, which
contain a backported patch to resolve this issue. After installing this
update, the postfix service will be restarted automatically.
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/):
699035 - CVE-2011-1720 postfix (smtpd): Crash due to improper management of SASL handlers for SMTP sessions
6. Package List:
Red Hat Enterprise Linux AS version 4:
Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/postfix-2.2.10-1.5.el4.src.rpm
i386:
postfix-2.2.10-1.5.el4.i386.rpm
postfix-debuginfo-2.2.10-1.5.el4.i386.rpm
postfix-pflogsumm-2.2.10-1.5.el4.i386.rpm
ia64:
postfix-2.2.10-1.5.el4.ia64.rpm
postfix-debuginfo-2.2.10-1.5.el4.ia64.rpm
postfix-pflogsumm-2.2.10-1.5.el4.ia64.rpm
ppc:
postfix-2.2.10-1.5.el4.ppc.rpm
postfix-debuginfo-2.2.10-1.5.el4.ppc.rpm
postfix-pflogsumm-2.2.10-1.5.el4.ppc.rpm
s390:
postfix-2.2.10-1.5.el4.s390.rpm
postfix-debuginfo-2.2.10-1.5.el4.s390.rpm
postfix-pflogsumm-2.2.10-1.5.el4.s390.rpm
s390x:
postfix-2.2.10-1.5.el4.s390x.rpm
postfix-debuginfo-2.2.10-1.5.el4.s390x.rpm
postfix-pflogsumm-2.2.10-1.5.el4.s390x.rpm
x86_64:
postfix-2.2.10-1.5.el4.x86_64.rpm
postfix-debuginfo-2.2.10-1.5.el4.x86_64.rpm
postfix-pflogsumm-2.2.10-1.5.el4.x86_64.rpm
Red Hat Enterprise Linux Desktop version 4:
Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/postfix-2.2.10-1.5.el4.src.rpm
i386:
postfix-2.2.10-1.5.el4.i386.rpm
postfix-debuginfo-2.2.10-1.5.el4.i386.rpm
postfix-pflogsumm-2.2.10-1.5.el4.i386.rpm
x86_64:
postfix-2.2.10-1.5.el4.x86_64.rpm
postfix-debuginfo-2.2.10-1.5.el4.x86_64.rpm
postfix-pflogsumm-2.2.10-1.5.el4.x86_64.rpm
Red Hat Enterprise Linux ES version 4:
Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/postfix-2.2.10-1.5.el4.src.rpm
i386:
postfix-2.2.10-1.5.el4.i386.rpm
postfix-debuginfo-2.2.10-1.5.el4.i386.rpm
postfix-pflogsumm-2.2.10-1.5.el4.i386.rpm
ia64:
postfix-2.2.10-1.5.el4.ia64.rpm
postfix-debuginfo-2.2.10-1.5.el4.ia64.rpm
postfix-pflogsumm-2.2.10-1.5.el4.ia64.rpm
x86_64:
postfix-2.2.10-1.5.el4.x86_64.rpm
postfix-debuginfo-2.2.10-1.5.el4.x86_64.rpm
postfix-pflogsumm-2.2.10-1.5.el4.x86_64.rpm
Red Hat Enterprise Linux WS version 4:
Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/postfix-2.2.10-1.5.el4.src.rpm
i386:
postfix-2.2.10-1.5.el4.i386.rpm
postfix-debuginfo-2.2.10-1.5.el4.i386.rpm
postfix-pflogsumm-2.2.10-1.5.el4.i386.rpm
ia64:
postfix-2.2.10-1.5.el4.ia64.rpm
postfix-debuginfo-2.2.10-1.5.el4.ia64.rpm
postfix-pflogsumm-2.2.10-1.5.el4.ia64.rpm
x86_64:
postfix-2.2.10-1.5.el4.x86_64.rpm
postfix-debuginfo-2.2.10-1.5.el4.x86_64.rpm
postfix-pflogsumm-2.2.10-1.5.el4.x86_64.rpm
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/postfix-2.3.3-2.3.el5_6.src.rpm
i386:
postfix-2.3.3-2.3.el5_6.i386.rpm
postfix-debuginfo-2.3.3-2.3.el5_6.i386.rpm
postfix-pflogsumm-2.3.3-2.3.el5_6.i386.rpm
x86_64:
postfix-2.3.3-2.3.el5_6.x86_64.rpm
postfix-debuginfo-2.3.3-2.3.el5_6.x86_64.rpm
postfix-pflogsumm-2.3.3-2.3.el5_6.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/postfix-2.3.3-2.3.el5_6.src.rpm
i386:
postfix-2.3.3-2.3.el5_6.i386.rpm
postfix-debuginfo-2.3.3-2.3.el5_6.i386.rpm
postfix-pflogsumm-2.3.3-2.3.el5_6.i386.rpm
ia64:
postfix-2.3.3-2.3.el5_6.ia64.rpm
postfix-debuginfo-2.3.3-2.3.el5_6.ia64.rpm
postfix-pflogsumm-2.3.3-2.3.el5_6.ia64.rpm
ppc:
postfix-2.3.3-2.3.el5_6.ppc.rpm
postfix-debuginfo-2.3.3-2.3.el5_6.ppc.rpm
postfix-pflogsumm-2.3.3-2.3.el5_6.ppc.rpm
s390x:
postfix-2.3.3-2.3.el5_6.s390x.rpm
postfix-debuginfo-2.3.3-2.3.el5_6.s390x.rpm
postfix-pflogsumm-2.3.3-2.3.el5_6.s390x.rpm
x86_64:
postfix-2.3.3-2.3.el5_6.x86_64.rpm
postfix-debuginfo-2.3.3-2.3.el5_6.x86_64.rpm
postfix-pflogsumm-2.3.3-2.3.el5_6.x86_64.rpm
Red Hat Enterprise Linux Desktop (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client-6.1.z/en/os/SRPMS/postfix-2.6.6-2.2.el6_1.src.rpm
i386:
postfix-2.6.6-2.2.el6_1.i686.rpm
postfix-debuginfo-2.6.6-2.2.el6_1.i686.rpm
x86_64:
postfix-2.6.6-2.2.el6_1.x86_64.rpm
postfix-debuginfo-2.6.6-2.2.el6_1.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client-6.1.z/en/os/SRPMS/postfix-2.6.6-2.2.el6_1.src.rpm
i386:
postfix-debuginfo-2.6.6-2.2.el6_1.i686.rpm
postfix-perl-scripts-2.6.6-2.2.el6_1.i686.rpm
x86_64:
postfix-debuginfo-2.6.6-2.2.el6_1.x86_64.rpm
postfix-perl-scripts-2.6.6-2.2.el6_1.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode-6.1.z/en/os/SRPMS/postfix-2.6.6-2.2.el6_1.src.rpm
x86_64:
postfix-2.6.6-2.2.el6_1.x86_64.rpm
postfix-debuginfo-2.6.6-2.2.el6_1.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode-6.1.z/en/os/SRPMS/postfix-2.6.6-2.2.el6_1.src.rpm
x86_64:
postfix-debuginfo-2.6.6-2.2.el6_1.x86_64.rpm
postfix-perl-scripts-2.6.6-2.2.el6_1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server-6.1.z/en/os/SRPMS/postfix-2.6.6-2.2.el6_1.src.rpm
i386:
postfix-2.6.6-2.2.el6_1.i686.rpm
postfix-debuginfo-2.6.6-2.2.el6_1.i686.rpm
ppc64:
postfix-2.6.6-2.2.el6_1.ppc64.rpm
postfix-debuginfo-2.6.6-2.2.el6_1.ppc64.rpm
s390x:
postfix-2.6.6-2.2.el6_1.s390x.rpm
postfix-debuginfo-2.6.6-2.2.el6_1.s390x.rpm
x86_64:
postfix-2.6.6-2.2.el6_1.x86_64.rpm
postfix-debuginfo-2.6.6-2.2.el6_1.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server-6.1.z/en/os/SRPMS/postfix-2.6.6-2.2.el6_1.src.rpm
i386:
postfix-debuginfo-2.6.6-2.2.el6_1.i686.rpm
postfix-perl-scripts-2.6.6-2.2.el6_1.i686.rpm
ppc64:
postfix-debuginfo-2.6.6-2.2.el6_1.ppc64.rpm
postfix-perl-scripts-2.6.6-2.2.el6_1.ppc64.rpm
s390x:
postfix-debuginfo-2.6.6-2.2.el6_1.s390x.rpm
postfix-perl-scripts-2.6.6-2.2.el6_1.s390x.rpm
x86_64:
postfix-debuginfo-2.6.6-2.2.el6_1.x86_64.rpm
postfix-perl-scripts-2.6.6-2.2.el6_1.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation-6.1.z/en/os/SRPMS/postfix-2.6.6-2.2.el6_1.src.rpm
i386:
postfix-2.6.6-2.2.el6_1.i686.rpm
postfix-debuginfo-2.6.6-2.2.el6_1.i686.rpm
x86_64:
postfix-2.6.6-2.2.el6_1.x86_64.rpm
postfix-debuginfo-2.6.6-2.2.el6_1.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation-6.1.z/en/os/SRPMS/postfix-2.6.6-2.2.el6_1.src.rpm
i386:
postfix-debuginfo-2.6.6-2.2.el6_1.i686.rpm
postfix-perl-scripts-2.6.6-2.2.el6_1.i686.rpm
x86_64:
postfix-debuginfo-2.6.6-2.2.el6_1.x86_64.rpm
postfix-perl-scripts-2.6.6-2.2.el6_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-2011-1720.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.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.4 (GNU/Linux)
iD8DBQFN5Q+zXlSAg2UNWIIRAnNJAJ9+kzFv8T5mFcOL0cP6TOKtt5A/rQCgn9WN
fXvwjl2pb9anlkEY59xkzUI=
=OfHv
- -----END PGP SIGNATURE-----
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
iD8DBQFN5a9l/iFOrG6YcBERAs+jAKC6JByLYkL1tbxp8wVixnlTOLhu/wCfXBJ8
y9wDrO6BdK1vqC/lkbX3sRE=
=DTxk
-----END PGP SIGNATURE-----