RHSA-2005:152-01: Low: postfix security update

A postfix security update is available for Red Hat Enterprise Linux 4

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Red Hat Security Advisory

Synopsis: Low: postfix security update
Advisory ID: RHSA-2005:152-01
Advisory URL: https://rhn.redhat.com/errata/RHSA-2005-152.html
Issue date: 2005-03-16
Updated on: 2005-03-16
Product: Red Hat Enterprise Linux
CVE Names: CAN-2005-0337
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1. Summary:

Updated postfix packages that include a security fix and two other bug fixes are now available for Red Hat Enterprise Linux 4.

This update has been rated as having low security impact by the Red Hat Security Response Team

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, 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 WS version 4 - i386, ia64, x86_64

3. Problem description:

Postfix is a Mail Transport Agent (MTA), supporting LDAP, SMTP AUTH (SASL), and TLS.

A flaw was found in the ipv6 patch used with Postfix. When the file /proc/net/if_inet6 is not available and permit_mx_backup is enabled in smtpd_recipient_restrictions, this flaw could allow remote attackers to bypass e-mail restrictions and perform mail relaying by sending mail to an IPv6 hostname. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0337 to this issue.

These updated packages also fix the following problems:

- - wrong permissions on doc directory
- - segfault when gethostbyname or gethostbyaddr fails

All users of postfix should upgrade to these updated packages, which contain patches which resolve these issues.

4. Solution:

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs.

Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.

If up2date fails to connect to Red Hat Network due to SSL
Certificate Errors, you need to install a version of the
up2date client with an updated certificate. The latest version of up2date is available from the Red Hat FTP site and may also be downloaded directly from the RHN website:

https://rhn.redhat.com/help/latest-up2date.pxt

5. Bug IDs fixed (http://bugzilla.redhat.com/):

146732 - CAN-2005-0337 open relay bug in postfix ipv6 patch
147280 - Permissions on doc directory is wrong
139983 - newaliases segfaults when gethostbyname or gethostbyaddr fails

6. RPMs required:

Red Hat Enterprise Linux AS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/postfix-2.1.5-4.2.RHEL4.src.rpm
6cb38ee879fcbf2c2790890e49dd1a4b postfix-2.1.5-4.2.RHEL4.src.rpm

i386:
986882612b24197ca6a962e2e863dba7 postfix-2.1.5-4.2.RHEL4.i386.rpm
1dc80db9e883731d25f3783fa47dccd8 postfix-pflogsumm-2.1.5-4.2.RHEL4.i386.rpm

ia64:
01c0c0432414d34d774b6d118e8fd93c postfix-2.1.5-4.2.RHEL4.ia64.rpm
3a07219a527596c4719cb971aa54aa38 postfix-pflogsumm-2.1.5-4.2.RHEL4.ia64.rpm

ppc:
6eb2d7a742a0684b0031ea30843fd8ac postfix-2.1.5-4.2.RHEL4.ppc.rpm
f15d4f4e2823befcbdf5e913182c592a postfix-pflogsumm-2.1.5-4.2.RHEL4.ppc.rpm

s390:
915feb7be6d01186fb61d1664d5714a7 postfix-2.1.5-4.2.RHEL4.s390.rpm
96202b25b1775f7fd1a96077354ebf72 postfix-pflogsumm-2.1.5-4.2.RHEL4.s390.rpm

s390x:
fbb35e5cb15347ffaa68cdad954683d0 postfix-2.1.5-4.2.RHEL4.s390x.rpm
aeb220b7e428f560e6cad87f367fd8ff postfix-pflogsumm-2.1.5-4.2.RHEL4.s390x.rpm

x86_64:
365c57d129da99b56ba8d54b73539c89 postfix-2.1.5-4.2.RHEL4.x86_64.rpm
3a39dc000dd43d57144da89450accfbe postfix-pflogsumm-2.1.5-4.2.RHEL4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/postfix-2.1.5-4.2.RHEL4.src.rpm
6cb38ee879fcbf2c2790890e49dd1a4b postfix-2.1.5-4.2.RHEL4.src.rpm

i386:
986882612b24197ca6a962e2e863dba7 postfix-2.1.5-4.2.RHEL4.i386.rpm
1dc80db9e883731d25f3783fa47dccd8 postfix-pflogsumm-2.1.5-4.2.RHEL4.i386.rpm

x86_64:
365c57d129da99b56ba8d54b73539c89 postfix-2.1.5-4.2.RHEL4.x86_64.rpm
3a39dc000dd43d57144da89450accfbe postfix-pflogsumm-2.1.5-4.2.RHEL4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/postfix-2.1.5-4.2.RHEL4.src.rpm
6cb38ee879fcbf2c2790890e49dd1a4b postfix-2.1.5-4.2.RHEL4.src.rpm

i386:
986882612b24197ca6a962e2e863dba7 postfix-2.1.5-4.2.RHEL4.i386.rpm
1dc80db9e883731d25f3783fa47dccd8 postfix-pflogsumm-2.1.5-4.2.RHEL4.i386.rpm

ia64:
01c0c0432414d34d774b6d118e8fd93c postfix-2.1.5-4.2.RHEL4.ia64.rpm
3a07219a527596c4719cb971aa54aa38 postfix-pflogsumm-2.1.5-4.2.RHEL4.ia64.rpm

x86_64:
365c57d129da99b56ba8d54b73539c89 postfix-2.1.5-4.2.RHEL4.x86_64.rpm
3a39dc000dd43d57144da89450accfbe postfix-pflogsumm-2.1.5-4.2.RHEL4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

SRPMS:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/postfix-2.1.5-4.2.RHEL4.src.rpm
6cb38ee879fcbf2c2790890e49dd1a4b postfix-2.1.5-4.2.RHEL4.src.rpm

i386:
986882612b24197ca6a962e2e863dba7 postfix-2.1.5-4.2.RHEL4.i386.rpm
1dc80db9e883731d25f3783fa47dccd8 postfix-pflogsumm-2.1.5-4.2.RHEL4.i386.rpm

ia64:
01c0c0432414d34d774b6d118e8fd93c postfix-2.1.5-4.2.RHEL4.ia64.rpm
3a07219a527596c4719cb971aa54aa38 postfix-pflogsumm-2.1.5-4.2.RHEL4.ia64.rpm

x86_64:
365c57d129da99b56ba8d54b73539c89 postfix-2.1.5-4.2.RHEL4.x86_64.rpm
3a39dc000dd43d57144da89450accfbe postfix-pflogsumm-2.1.5-4.2.RHEL4.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://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0337

8. Contact:

The Red Hat security contact is lt;secalert@redhat.comgt;. More contact details at https://www.redhat.com/security/team/contact/

Copyright 2005 Red Hat, Inc.