Moderate: postfix security update

Advisory:	RHSA-2008:0839-3
Type:	Security Advisory
Severity:	Moderate
Issued on:	2008-08-14
Last updated on:	2008-08-14
Affected Products:	Red Hat Desktop (v. 3) Red Hat Desktop (v. 4) Red Hat Enterprise Linux (v. 5 server) Red Hat Enterprise Linux AS (v. 3) Red Hat Enterprise Linux AS (v. 4) Red Hat Enterprise Linux AS (v. 4.7.z) Red Hat Enterprise Linux Desktop (v. 5 client) Red Hat Enterprise Linux ES (v. 3) Red Hat Enterprise Linux ES (v. 4) Red Hat Enterprise Linux ES (v. 4.7.z) Red Hat Enterprise Linux EUS (v. 5.2.z server) Red Hat Enterprise Linux WS (v. 3) Red Hat Enterprise Linux WS (v. 4)
OVAL:	com.redhat.rhsa-20080839.xml
CVEs (cve.mitre.org):	CVE-2008-2936

Details

Updated postfix packages that fix a security issue are now available for
Red Hat Enterprise Linux 3, 4, and 5.

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

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

A flaw was found in the way Postfix dereferences symbolic links. If a local
user has write access to a mail spool directory with no root mailbox, it
may be possible for them to append arbitrary data to files that root has
write permission to. (CVE-2008-2936)

Red Hat would like to thank Sebastian Krahmer for responsibly disclosing
this issue.

All users of postfix should upgrade to these updated packages, which
contain a backported patch that resolves this issue.

Solution

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

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

Updated packages

Red Hat Desktop (v. 3)

SRPMS:
postfix-2.0.16-14.1.RHEL3.src.rpm	`6a52529c823d04adaba7487df1c7d3d8`

IA-32:
postfix-2.0.16-14.1.RHEL3.i386.rpm	`52da9bfaafeba3b53bbf2d26f67977b9`

x86_64:
postfix-2.0.16-14.1.RHEL3.x86_64.rpm	`1babde7a1b661e7ae986bbe1113d34de`

Red Hat Desktop (v. 4)

SRPMS:
postfix-2.2.10-1.2.1.el4_7.src.rpm	`a4687bae6f5e6ae5970f49c119665b74`

IA-32:
postfix-2.2.10-1.2.1.el4_7.i386.rpm	`fcb3fca080aea5d5a709654b9e07d874`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.i386.rpm	`9dc81f8c9b8281c567dbcf050acf82cd`

x86_64:
postfix-2.2.10-1.2.1.el4_7.x86_64.rpm	`a19c97cccc41ddb0c184d86a175bdb69`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.x86_64.rpm	`d675907ea8a57c16e2ccee342399b4a2`

Red Hat Enterprise Linux (v. 5 server)

SRPMS:
postfix-2.3.3-2.1.el5_2.src.rpm	`43aec8f52490755eca151024c08ba355`

IA-32:
postfix-2.3.3-2.1.el5_2.i386.rpm	`e4157dcd48728ba02cb24268247e4a12`
postfix-pflogsumm-2.3.3-2.1.el5_2.i386.rpm	`1883aba296eb4f56898f3de77be82461`

IA-64:
postfix-2.3.3-2.1.el5_2.ia64.rpm	`3e017d125b682850fa743f94490e4e84`
postfix-pflogsumm-2.3.3-2.1.el5_2.ia64.rpm	`85723d19ec825a70e804a5f137e721ae`

PPC:
postfix-2.3.3-2.1.el5_2.ppc.rpm	`c48d78d3f510fb10339d17a4476d6eb3`
postfix-pflogsumm-2.3.3-2.1.el5_2.ppc.rpm	`0f95cce72c96a3cc7039118c130515b3`

s390x:
postfix-2.3.3-2.1.el5_2.s390x.rpm	`947ed724df3ac9647560e8e7933ccb26`
postfix-pflogsumm-2.3.3-2.1.el5_2.s390x.rpm	`c2377777e616366cfe3b7c1db130dd27`

x86_64:
postfix-2.3.3-2.1.el5_2.x86_64.rpm	`57ead290f1df23a6a1a5229591ef20b0`
postfix-pflogsumm-2.3.3-2.1.el5_2.x86_64.rpm	`d609e3952b76764fa557592216f8787c`

Red Hat Enterprise Linux AS (v. 3)

SRPMS:
postfix-2.0.16-14.1.RHEL3.src.rpm	`6a52529c823d04adaba7487df1c7d3d8`

IA-32:
postfix-2.0.16-14.1.RHEL3.i386.rpm	`52da9bfaafeba3b53bbf2d26f67977b9`

IA-64:
postfix-2.0.16-14.1.RHEL3.ia64.rpm	`d822f204b1605f83613ecf650fadb5ff`

PPC:
postfix-2.0.16-14.1.RHEL3.ppc.rpm	`3309e60e6f7028225a01dbc4f110391c`

s390:
postfix-2.0.16-14.1.RHEL3.s390.rpm	`e1771eb526116d10c69c921ec2df7133`

s390x:
postfix-2.0.16-14.1.RHEL3.s390x.rpm	`5ab3d2dc9a8293fa8886a900a92e1a8e`

x86_64:
postfix-2.0.16-14.1.RHEL3.x86_64.rpm	`1babde7a1b661e7ae986bbe1113d34de`

Red Hat Enterprise Linux AS (v. 4)

SRPMS:
postfix-2.2.10-1.2.1.el4_7.src.rpm	`a4687bae6f5e6ae5970f49c119665b74`

IA-32:
postfix-2.2.10-1.2.1.el4_7.i386.rpm	`fcb3fca080aea5d5a709654b9e07d874`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.i386.rpm	`9dc81f8c9b8281c567dbcf050acf82cd`

IA-64:
postfix-2.2.10-1.2.1.el4_7.ia64.rpm	`47a8c6ec1c15b5c7995ad6090c2ba5ca`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.ia64.rpm	`7baa93d940d40fd4d37b8cefbf211eba`

PPC:
postfix-2.2.10-1.2.1.el4_7.ppc.rpm	`1bfd6213d7ceb3b050405dfc7823d81c`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.ppc.rpm	`2bc3b1cf285c266eaf285ca3d3d6ab05`

s390:
postfix-2.2.10-1.2.1.el4_7.s390.rpm	`9258e21b9d0dc2c6652c882de031593f`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.s390.rpm	`37a6694dc869d8bc04a51a900e58a549`

s390x:
postfix-2.2.10-1.2.1.el4_7.s390x.rpm	`e77719ad9cb9daf0543456e8e1f83999`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.s390x.rpm	`0e3361ba18313ac6b04a529166578a7a`

x86_64:
postfix-2.2.10-1.2.1.el4_7.x86_64.rpm	`a19c97cccc41ddb0c184d86a175bdb69`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.x86_64.rpm	`d675907ea8a57c16e2ccee342399b4a2`

Red Hat Enterprise Linux AS (v. 4.7.z)

SRPMS:
postfix-2.2.10-1.2.1.el4_7.src.rpm	`a4687bae6f5e6ae5970f49c119665b74`

IA-32:
postfix-2.2.10-1.2.1.el4_7.i386.rpm	`fcb3fca080aea5d5a709654b9e07d874`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.i386.rpm	`9dc81f8c9b8281c567dbcf050acf82cd`

IA-64:
postfix-2.2.10-1.2.1.el4_7.ia64.rpm	`47a8c6ec1c15b5c7995ad6090c2ba5ca`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.ia64.rpm	`7baa93d940d40fd4d37b8cefbf211eba`

PPC:
postfix-2.2.10-1.2.1.el4_7.ppc.rpm	`1bfd6213d7ceb3b050405dfc7823d81c`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.ppc.rpm	`2bc3b1cf285c266eaf285ca3d3d6ab05`

s390:
postfix-2.2.10-1.2.1.el4_7.s390.rpm	`9258e21b9d0dc2c6652c882de031593f`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.s390.rpm	`37a6694dc869d8bc04a51a900e58a549`

s390x:
postfix-2.2.10-1.2.1.el4_7.s390x.rpm	`e77719ad9cb9daf0543456e8e1f83999`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.s390x.rpm	`0e3361ba18313ac6b04a529166578a7a`

x86_64:
postfix-2.2.10-1.2.1.el4_7.x86_64.rpm	`a19c97cccc41ddb0c184d86a175bdb69`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.x86_64.rpm	`d675907ea8a57c16e2ccee342399b4a2`

Red Hat Enterprise Linux Desktop (v. 5 client)

SRPMS:
postfix-2.3.3-2.1.el5_2.src.rpm	`43aec8f52490755eca151024c08ba355`

IA-32:
postfix-2.3.3-2.1.el5_2.i386.rpm	`e4157dcd48728ba02cb24268247e4a12`
postfix-pflogsumm-2.3.3-2.1.el5_2.i386.rpm	`1883aba296eb4f56898f3de77be82461`

x86_64:
postfix-2.3.3-2.1.el5_2.x86_64.rpm	`57ead290f1df23a6a1a5229591ef20b0`
postfix-pflogsumm-2.3.3-2.1.el5_2.x86_64.rpm	`d609e3952b76764fa557592216f8787c`

Red Hat Enterprise Linux ES (v. 3)

SRPMS:
postfix-2.0.16-14.1.RHEL3.src.rpm	`6a52529c823d04adaba7487df1c7d3d8`

IA-32:
postfix-2.0.16-14.1.RHEL3.i386.rpm	`52da9bfaafeba3b53bbf2d26f67977b9`

IA-64:
postfix-2.0.16-14.1.RHEL3.ia64.rpm	`d822f204b1605f83613ecf650fadb5ff`

x86_64:
postfix-2.0.16-14.1.RHEL3.x86_64.rpm	`1babde7a1b661e7ae986bbe1113d34de`

Red Hat Enterprise Linux ES (v. 4)

SRPMS:
postfix-2.2.10-1.2.1.el4_7.src.rpm	`a4687bae6f5e6ae5970f49c119665b74`

IA-32:
postfix-2.2.10-1.2.1.el4_7.i386.rpm	`fcb3fca080aea5d5a709654b9e07d874`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.i386.rpm	`9dc81f8c9b8281c567dbcf050acf82cd`

IA-64:
postfix-2.2.10-1.2.1.el4_7.ia64.rpm	`47a8c6ec1c15b5c7995ad6090c2ba5ca`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.ia64.rpm	`7baa93d940d40fd4d37b8cefbf211eba`

x86_64:
postfix-2.2.10-1.2.1.el4_7.x86_64.rpm	`a19c97cccc41ddb0c184d86a175bdb69`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.x86_64.rpm	`d675907ea8a57c16e2ccee342399b4a2`

Red Hat Enterprise Linux ES (v. 4.7.z)

SRPMS:
postfix-2.2.10-1.2.1.el4_7.src.rpm	`a4687bae6f5e6ae5970f49c119665b74`

IA-32:
postfix-2.2.10-1.2.1.el4_7.i386.rpm	`fcb3fca080aea5d5a709654b9e07d874`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.i386.rpm	`9dc81f8c9b8281c567dbcf050acf82cd`

IA-64:
postfix-2.2.10-1.2.1.el4_7.ia64.rpm	`47a8c6ec1c15b5c7995ad6090c2ba5ca`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.ia64.rpm	`7baa93d940d40fd4d37b8cefbf211eba`

x86_64:
postfix-2.2.10-1.2.1.el4_7.x86_64.rpm	`a19c97cccc41ddb0c184d86a175bdb69`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.x86_64.rpm	`d675907ea8a57c16e2ccee342399b4a2`

Red Hat Enterprise Linux EUS (v. 5.2.z server)

SRPMS:
postfix-2.3.3-2.1.el5_2.src.rpm	`43aec8f52490755eca151024c08ba355`

IA-32:
postfix-2.3.3-2.1.el5_2.i386.rpm	`e4157dcd48728ba02cb24268247e4a12`
postfix-pflogsumm-2.3.3-2.1.el5_2.i386.rpm	`1883aba296eb4f56898f3de77be82461`

IA-64:
postfix-2.3.3-2.1.el5_2.ia64.rpm	`3e017d125b682850fa743f94490e4e84`
postfix-pflogsumm-2.3.3-2.1.el5_2.ia64.rpm	`85723d19ec825a70e804a5f137e721ae`

PPC:
postfix-2.3.3-2.1.el5_2.ppc.rpm	`c48d78d3f510fb10339d17a4476d6eb3`
postfix-pflogsumm-2.3.3-2.1.el5_2.ppc.rpm	`0f95cce72c96a3cc7039118c130515b3`

s390x:
postfix-2.3.3-2.1.el5_2.s390x.rpm	`947ed724df3ac9647560e8e7933ccb26`
postfix-pflogsumm-2.3.3-2.1.el5_2.s390x.rpm	`c2377777e616366cfe3b7c1db130dd27`

x86_64:
postfix-2.3.3-2.1.el5_2.x86_64.rpm	`57ead290f1df23a6a1a5229591ef20b0`
postfix-pflogsumm-2.3.3-2.1.el5_2.x86_64.rpm	`d609e3952b76764fa557592216f8787c`

Red Hat Enterprise Linux WS (v. 3)

SRPMS:
postfix-2.0.16-14.1.RHEL3.src.rpm	`6a52529c823d04adaba7487df1c7d3d8`

IA-32:
postfix-2.0.16-14.1.RHEL3.i386.rpm	`52da9bfaafeba3b53bbf2d26f67977b9`

IA-64:
postfix-2.0.16-14.1.RHEL3.ia64.rpm	`d822f204b1605f83613ecf650fadb5ff`

x86_64:
postfix-2.0.16-14.1.RHEL3.x86_64.rpm	`1babde7a1b661e7ae986bbe1113d34de`

Red Hat Enterprise Linux WS (v. 4)

SRPMS:
postfix-2.2.10-1.2.1.el4_7.src.rpm	`a4687bae6f5e6ae5970f49c119665b74`

IA-32:
postfix-2.2.10-1.2.1.el4_7.i386.rpm	`fcb3fca080aea5d5a709654b9e07d874`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.i386.rpm	`9dc81f8c9b8281c567dbcf050acf82cd`

IA-64:
postfix-2.2.10-1.2.1.el4_7.ia64.rpm	`47a8c6ec1c15b5c7995ad6090c2ba5ca`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.ia64.rpm	`7baa93d940d40fd4d37b8cefbf211eba`

x86_64:
postfix-2.2.10-1.2.1.el4_7.x86_64.rpm	`a19c97cccc41ddb0c184d86a175bdb69`
postfix-pflogsumm-2.2.10-1.2.1.el4_7.x86_64.rpm	`d675907ea8a57c16e2ccee342399b4a2`

(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

456314 - CVE-2008-2936 postfix privilege escalation flaw

References

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2936
http://www.redhat.com/security/updates/classification/#moderate

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The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/