Synopsis

Low: sendmail security and bug fix update

Type/Severity

Security Advisory: Low

Topic

Updated sendmail packages that fix two security issues and several bugs are
now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having low
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

Description

Sendmail is a very widely used Mail Transport Agent (MTA). MTAs deliver
mail from one machine to another. Sendmail is not a client program, but
rather a behind-the-scenes daemon that moves email over networks or the
Internet to its final destination.

The configuration of sendmail in Red Hat Enterprise Linux was found to not
reject the "localhost.localdomain" domain name for email messages that come
from external hosts. This could allow remote attackers to disguise spoofed
messages. (CVE-2006-7176)

A flaw was found in the way sendmail handled NUL characters in the
CommonName field of X.509 certificates. An attacker able to get a
carefully-crafted certificate signed by a trusted Certificate Authority
could trick sendmail into accepting it by mistake, allowing the attacker to
perform a man-in-the-middle attack or bypass intended client certificate
authentication. (CVE-2009-4565)

Note: The CVE-2009-4565 issue only affected configurations using TLS with
certificate verification and CommonName checking enabled, which is not a
typical configuration.

This update also fixes the following bugs:

• sendmail was unable to parse files specified by the ServiceSwitchFile
  option which used a colon as a separator. (BZ#512871)
  
• sendmail incorrectly returned a zero exit code when free space was low.
  (BZ#299951)
  
• the sendmail manual page had a blank space between the -qG option and
  parameter. (BZ#250552)
  
• the comments in the sendmail.mc file specified the wrong path to SSL
  certificates. (BZ#244012)
  
• the sendmail packages did not provide the MTA capability. (BZ#494408)
  

All users of sendmail are advised to upgrade to these updated packages,
which resolve these issues.

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
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 238540 - CVE-2006-7176 sendmail allows external mail with from address xxx@localhost.localdomain
• BZ - 244012 - Old path to openssl used in sendmail.mc
• BZ - 250552 - the description about option '-qG name' should be modified in the manpage
• BZ - 440616 - there should be %{?dist} instead of %{dist} in the *.spec on the Release: line
• BZ - 449391 - sendmail allows external mail with from address xxx@localhost.localdomain
• BZ - 494408 - Sendmail should provide "MTA"
• BZ - 552622 - CVE-2009-4565 sendmail: incorrect verification of SSL certificate with NUL in name

CVEs

• CVE-2006-7176
• CVE-2009-4565

References

• http://www.redhat.com/security/updates/classification/#low

Red Hat Enterprise Linux Server 5

SRPM
sendmail-8.13.8-8.el5.src.rpm	SHA-256: da330c4cf035db3c18832eb969431af656335476eb10ff055e52a519785a53d5
x86_64
sendmail-8.13.8-8.el5.x86_64.rpm	SHA-256: 5b6b7b1aa89ad9c9748a7b5c6e890f3096b1fad9967b79e2b4055d75d7fd606b
sendmail-cf-8.13.8-8.el5.x86_64.rpm	SHA-256: f6f8e49286217226d216791b362dee84ca10b794edb3c25ed977723e3e258c04
sendmail-devel-8.13.8-8.el5.i386.rpm	SHA-256: cb20e8360ac2417ccf928254f975afa11577d59f14d5997fe5a38c7f31a1171e
sendmail-devel-8.13.8-8.el5.x86_64.rpm	SHA-256: c725ca343c461af8292eed7c429080a4ebe5ccf85edd32a7dbcac604b560f2b5
sendmail-doc-8.13.8-8.el5.x86_64.rpm	SHA-256: 8d27acd9dd5e1cecb615a8134fb1b750e162643663ed21c17ae5b55a6f142485
ia64
sendmail-8.13.8-8.el5.ia64.rpm	SHA-256: 995990ed8ddb84f38c2fa4970ee589756a4b709d03b26b97ad7703b702a59091
sendmail-cf-8.13.8-8.el5.ia64.rpm	SHA-256: d3800da1d3b35cf754a7bdaee5993c4b3e0de10ae50cce8122f6b2c460695af4
sendmail-devel-8.13.8-8.el5.ia64.rpm	SHA-256: 8b182c66427fc5ea8f7d9c2f59114e7309422bf66e845ca03b28793e7575b4bb
sendmail-doc-8.13.8-8.el5.ia64.rpm	SHA-256: d11803a0904f28ee566e70e0de1c94ee5bfe0f2f6401a2160b3d19661f15fdb2
i386
sendmail-8.13.8-8.el5.i386.rpm	SHA-256: eca42390beb6be2424abebf1579b935353d83070e55da1fa3d8c6e41980594cb
sendmail-cf-8.13.8-8.el5.i386.rpm	SHA-256: 5dac4d551acfcab7bc3f8e038544a211d08f7185c6235cde903c64785f8530d6
sendmail-devel-8.13.8-8.el5.i386.rpm	SHA-256: cb20e8360ac2417ccf928254f975afa11577d59f14d5997fe5a38c7f31a1171e
sendmail-doc-8.13.8-8.el5.i386.rpm	SHA-256: 205238471c50796872f48143348ea0140ea8552260768935f3d09645c01aeb3a

Red Hat Enterprise Linux Workstation 5

SRPM
sendmail-8.13.8-8.el5.src.rpm	SHA-256: da330c4cf035db3c18832eb969431af656335476eb10ff055e52a519785a53d5
x86_64
sendmail-8.13.8-8.el5.x86_64.rpm	SHA-256: 5b6b7b1aa89ad9c9748a7b5c6e890f3096b1fad9967b79e2b4055d75d7fd606b
sendmail-cf-8.13.8-8.el5.x86_64.rpm	SHA-256: f6f8e49286217226d216791b362dee84ca10b794edb3c25ed977723e3e258c04
sendmail-devel-8.13.8-8.el5.i386.rpm	SHA-256: cb20e8360ac2417ccf928254f975afa11577d59f14d5997fe5a38c7f31a1171e
sendmail-devel-8.13.8-8.el5.x86_64.rpm	SHA-256: c725ca343c461af8292eed7c429080a4ebe5ccf85edd32a7dbcac604b560f2b5
sendmail-doc-8.13.8-8.el5.x86_64.rpm	SHA-256: 8d27acd9dd5e1cecb615a8134fb1b750e162643663ed21c17ae5b55a6f142485
i386
sendmail-8.13.8-8.el5.i386.rpm	SHA-256: eca42390beb6be2424abebf1579b935353d83070e55da1fa3d8c6e41980594cb
sendmail-cf-8.13.8-8.el5.i386.rpm	SHA-256: 5dac4d551acfcab7bc3f8e038544a211d08f7185c6235cde903c64785f8530d6
sendmail-devel-8.13.8-8.el5.i386.rpm	SHA-256: cb20e8360ac2417ccf928254f975afa11577d59f14d5997fe5a38c7f31a1171e
sendmail-doc-8.13.8-8.el5.i386.rpm	SHA-256: 205238471c50796872f48143348ea0140ea8552260768935f3d09645c01aeb3a

Red Hat Enterprise Linux Desktop 5

SRPM
sendmail-8.13.8-8.el5.src.rpm	SHA-256: da330c4cf035db3c18832eb969431af656335476eb10ff055e52a519785a53d5
x86_64
sendmail-8.13.8-8.el5.x86_64.rpm	SHA-256: 5b6b7b1aa89ad9c9748a7b5c6e890f3096b1fad9967b79e2b4055d75d7fd606b
sendmail-cf-8.13.8-8.el5.x86_64.rpm	SHA-256: f6f8e49286217226d216791b362dee84ca10b794edb3c25ed977723e3e258c04
sendmail-doc-8.13.8-8.el5.x86_64.rpm	SHA-256: 8d27acd9dd5e1cecb615a8134fb1b750e162643663ed21c17ae5b55a6f142485
i386
sendmail-8.13.8-8.el5.i386.rpm	SHA-256: eca42390beb6be2424abebf1579b935353d83070e55da1fa3d8c6e41980594cb
sendmail-cf-8.13.8-8.el5.i386.rpm	SHA-256: 5dac4d551acfcab7bc3f8e038544a211d08f7185c6235cde903c64785f8530d6
sendmail-doc-8.13.8-8.el5.i386.rpm	SHA-256: 205238471c50796872f48143348ea0140ea8552260768935f3d09645c01aeb3a

Red Hat Enterprise Linux for IBM z Systems 5

SRPM
sendmail-8.13.8-8.el5.src.rpm	SHA-256: da330c4cf035db3c18832eb969431af656335476eb10ff055e52a519785a53d5
s390x
sendmail-8.13.8-8.el5.s390x.rpm	SHA-256: ed522913c56a9452f3f61c6fda6424da3ebd493be191a49d26118745c2bb0a44
sendmail-cf-8.13.8-8.el5.s390x.rpm	SHA-256: 04cd5e0aca0ca7f5890f70ed085a4025a1c69247ae18bc82a2486bd61dd72b5e
sendmail-devel-8.13.8-8.el5.s390.rpm	SHA-256: 22959af80972a8cb241cc0aff2c291fb56dae6c3136fa63b58f693c089153aae
sendmail-devel-8.13.8-8.el5.s390x.rpm	SHA-256: 38d2f7d9a80e27e4077a1d548e8fd1f221344f751d4e92447cac922792a54a8a
sendmail-doc-8.13.8-8.el5.s390x.rpm	SHA-256: 51c031140d6edd1762f451f0bb354737ceb7b36cdcda1332f989e834195a926e

Red Hat Enterprise Linux for Power, big endian 5

SRPM
sendmail-8.13.8-8.el5.src.rpm	SHA-256: da330c4cf035db3c18832eb969431af656335476eb10ff055e52a519785a53d5
ppc
sendmail-8.13.8-8.el5.ppc.rpm	SHA-256: 57586c036434cafa61d64cbd9a08d2e8b1a76ac14834b922edde890a6797d1ee
sendmail-cf-8.13.8-8.el5.ppc.rpm	SHA-256: 3dd5a4839d72563e870db3a3bdd005083e56fc9c9091b146e12a4b447720c0e0
sendmail-devel-8.13.8-8.el5.ppc.rpm	SHA-256: 1031c9563c4d6ddcea500c314bc8ea29cba92a72b2c1126141e01c939b0c607f
sendmail-devel-8.13.8-8.el5.ppc64.rpm	SHA-256: 8fcac699c2dcd445fb412c23a6bcf22ed6f8abb449ec10a6c318ec77fdf30ba5
sendmail-doc-8.13.8-8.el5.ppc.rpm	SHA-256: 014a3afbb5b6ded5f51fd9c6096b45c9e455ecbadb1ee80780ce608cd4a75bf4

Red Hat Enterprise Linux Server from RHUI 5

SRPM
sendmail-8.13.8-8.el5.src.rpm	SHA-256: da330c4cf035db3c18832eb969431af656335476eb10ff055e52a519785a53d5
x86_64
sendmail-8.13.8-8.el5.x86_64.rpm	SHA-256: 5b6b7b1aa89ad9c9748a7b5c6e890f3096b1fad9967b79e2b4055d75d7fd606b
sendmail-cf-8.13.8-8.el5.x86_64.rpm	SHA-256: f6f8e49286217226d216791b362dee84ca10b794edb3c25ed977723e3e258c04
sendmail-devel-8.13.8-8.el5.i386.rpm	SHA-256: cb20e8360ac2417ccf928254f975afa11577d59f14d5997fe5a38c7f31a1171e
sendmail-devel-8.13.8-8.el5.x86_64.rpm	SHA-256: c725ca343c461af8292eed7c429080a4ebe5ccf85edd32a7dbcac604b560f2b5
sendmail-doc-8.13.8-8.el5.x86_64.rpm	SHA-256: 8d27acd9dd5e1cecb615a8134fb1b750e162643663ed21c17ae5b55a6f142485
i386
sendmail-8.13.8-8.el5.i386.rpm	SHA-256: eca42390beb6be2424abebf1579b935353d83070e55da1fa3d8c6e41980594cb
sendmail-cf-8.13.8-8.el5.i386.rpm	SHA-256: 5dac4d551acfcab7bc3f8e038544a211d08f7185c6235cde903c64785f8530d6
sendmail-devel-8.13.8-8.el5.i386.rpm	SHA-256: cb20e8360ac2417ccf928254f975afa11577d59f14d5997fe5a38c7f31a1171e
sendmail-doc-8.13.8-8.el5.i386.rpm	SHA-256: 205238471c50796872f48143348ea0140ea8552260768935f3d09645c01aeb3a