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Security Advisory Moderate: postfix security update

Advisory: RHSA-2011:0423-1
Type: Security Advisory
Severity: Moderate
Issued on: 2011-04-06
Last updated on: 2011-04-06
Affected Products: Red Hat Enterprise Linux Desktop (v. 6)
Red Hat Enterprise Linux HPC Node (v. 6)
Red Hat Enterprise Linux Server (v. 6)
Red Hat Enterprise Linux Server EUS (v. 6.0.z)
Red Hat Enterprise Linux Workstation (v. 6)
CVEs (cve.mitre.org): CVE-2011-0411

Details

Updated postfix packages that fix one security issue are 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.

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

It was discovered that Postfix did not flush the received SMTP commands
buffer after switching to TLS encryption for an SMTP session. A
man-in-the-middle attacker could use this flaw to inject SMTP commands into
a victim's session during the plain text phase. This would lead to those
commands being processed by Postfix after TLS encryption is enabled,
possibly allowing the attacker to steal the victim's mail or authentication
credentials. (CVE-2011-0411)

Red Hat would like to thank the CERT/CC for reporting CVE-2011-0411. The
CERT/CC acknowledges Wietse Venema 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.


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

Updated packages

Red Hat Enterprise Linux Desktop (v. 6)

SRPMS:
postfix-2.6.6-2.1.el6_0.src.rpm
File outdated by:  RHBA-2014:0191
    MD5: 3dbdb496f2f5767f42bb09b0a555f979
SHA-256: 9e9d046d00443a1e7a8bc34f692588d290408da1a4ab3625278f57f496c95928
 
IA-32:
postfix-2.6.6-2.1.el6_0.i686.rpm
File outdated by:  RHBA-2014:0191
    MD5: 92379dbcb9b752033f117f346a178275
SHA-256: 6303720a0921eba36ed544b3a0dc73d3f92fc6473a65d232595b30c375510440
postfix-debuginfo-2.6.6-2.1.el6_0.i686.rpm
File outdated by:  RHBA-2014:0191
    MD5: 9c0c1addc4a792f478946b09861ac8d1
SHA-256: bc48c955c37071456134e8ee948b1029e73d34277c58d90842ea0d459c1a93a3
postfix-perl-scripts-2.6.6-2.1.el6_0.i686.rpm
File outdated by:  RHBA-2014:0191
    MD5: 4bb8ee4b081ca8e732d44e6167d221ec
SHA-256: a9f5f5eec877f673cc2f9eb86429b4bf4f626cabdd84607bbd38dc8a84c77e0e
 
x86_64:
postfix-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: b355b5ec9e1dfc370673055626abe48a
SHA-256: c39c9a38bd5f1fbbfe718e4b836111daeb7a616ae13e3f0695c045243e8993ea
postfix-debuginfo-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: a95816af850d75ec1aa5ca395613f4d3
SHA-256: 93cc02220cf7b4371eb95051ce2ca45ec9b66250734da7151b7efa783061bdc3
postfix-perl-scripts-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: cf382a4c83e3783d86c9cdfb5ea1bb44
SHA-256: e9f7d0ef719d5d403913ddd50e7c07c182a9b0cb94c217a753ea2be061a72d27
 
Red Hat Enterprise Linux HPC Node (v. 6)

SRPMS:
postfix-2.6.6-2.1.el6_0.src.rpm
File outdated by:  RHBA-2014:0191
    MD5: 3dbdb496f2f5767f42bb09b0a555f979
SHA-256: 9e9d046d00443a1e7a8bc34f692588d290408da1a4ab3625278f57f496c95928
 
x86_64:
postfix-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: b355b5ec9e1dfc370673055626abe48a
SHA-256: c39c9a38bd5f1fbbfe718e4b836111daeb7a616ae13e3f0695c045243e8993ea
postfix-debuginfo-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: a95816af850d75ec1aa5ca395613f4d3
SHA-256: 93cc02220cf7b4371eb95051ce2ca45ec9b66250734da7151b7efa783061bdc3
postfix-perl-scripts-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: cf382a4c83e3783d86c9cdfb5ea1bb44
SHA-256: e9f7d0ef719d5d403913ddd50e7c07c182a9b0cb94c217a753ea2be061a72d27
 
Red Hat Enterprise Linux Server (v. 6)

SRPMS:
postfix-2.6.6-2.1.el6_0.src.rpm
File outdated by:  RHBA-2014:0191
    MD5: 3dbdb496f2f5767f42bb09b0a555f979
SHA-256: 9e9d046d00443a1e7a8bc34f692588d290408da1a4ab3625278f57f496c95928
 
IA-32:
postfix-2.6.6-2.1.el6_0.i686.rpm
File outdated by:  RHBA-2014:0191
    MD5: 92379dbcb9b752033f117f346a178275
SHA-256: 6303720a0921eba36ed544b3a0dc73d3f92fc6473a65d232595b30c375510440
postfix-debuginfo-2.6.6-2.1.el6_0.i686.rpm
File outdated by:  RHBA-2014:0191
    MD5: 9c0c1addc4a792f478946b09861ac8d1
SHA-256: bc48c955c37071456134e8ee948b1029e73d34277c58d90842ea0d459c1a93a3
postfix-perl-scripts-2.6.6-2.1.el6_0.i686.rpm
File outdated by:  RHBA-2014:0191
    MD5: 4bb8ee4b081ca8e732d44e6167d221ec
SHA-256: a9f5f5eec877f673cc2f9eb86429b4bf4f626cabdd84607bbd38dc8a84c77e0e
 
PPC:
postfix-2.6.6-2.1.el6_0.ppc64.rpm
File outdated by:  RHBA-2014:0191
    MD5: 5d11b971142ba3584ed6b658d7f32bbf
SHA-256: eb6554efb96e66c9ab193e1bd1395f293aaf16d732a350ab511befd60053ffb7
postfix-debuginfo-2.6.6-2.1.el6_0.ppc64.rpm
File outdated by:  RHBA-2014:0191
    MD5: c6bdd3cceb7c137c2dc3336cf3c40c79
SHA-256: 8dd6c3470143f5c18ff25c7c71e19f36d4ee6ca794ccc3248534c00b084f5e84
postfix-perl-scripts-2.6.6-2.1.el6_0.ppc64.rpm
File outdated by:  RHBA-2014:0191
    MD5: 06cc2fb3e63b924140710028623649fd
SHA-256: e8c759fe5574c05f01bf1f8492c232f79f25e4559abd4f2e48ee72c1b1798975
 
s390x:
postfix-2.6.6-2.1.el6_0.s390x.rpm
File outdated by:  RHBA-2014:0191
    MD5: fc131f0f20ff4c0e5bd71f47ff53473f
SHA-256: ff0b037e0ba14ff56ea961090bc5105a66bf4f7624680bacf00d7a4c39401e2c
postfix-debuginfo-2.6.6-2.1.el6_0.s390x.rpm
File outdated by:  RHBA-2014:0191
    MD5: d7ecc60b0d1ecd8803380a065b7ebab0
SHA-256: f331d78b550edec1e07830f7aff598c64cf51fb1acfcba519f28aa125b3b31ce
postfix-perl-scripts-2.6.6-2.1.el6_0.s390x.rpm
File outdated by:  RHBA-2014:0191
    MD5: a87240bb56fcfcfebea30d3a408d4de8
SHA-256: 791a63e30f79eedc3d6a22143c448b588fb9a29c53b8680699fa62487627e550
 
x86_64:
postfix-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: b355b5ec9e1dfc370673055626abe48a
SHA-256: c39c9a38bd5f1fbbfe718e4b836111daeb7a616ae13e3f0695c045243e8993ea
postfix-debuginfo-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: a95816af850d75ec1aa5ca395613f4d3
SHA-256: 93cc02220cf7b4371eb95051ce2ca45ec9b66250734da7151b7efa783061bdc3
postfix-perl-scripts-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: cf382a4c83e3783d86c9cdfb5ea1bb44
SHA-256: e9f7d0ef719d5d403913ddd50e7c07c182a9b0cb94c217a753ea2be061a72d27
 
Red Hat Enterprise Linux Server EUS (v. 6.0.z)

SRPMS:
postfix-2.6.6-2.1.el6_0.src.rpm
File outdated by:  RHBA-2014:0191
    MD5: 3dbdb496f2f5767f42bb09b0a555f979
SHA-256: 9e9d046d00443a1e7a8bc34f692588d290408da1a4ab3625278f57f496c95928
 
IA-32:
postfix-2.6.6-2.1.el6_0.i686.rpm     MD5: 92379dbcb9b752033f117f346a178275
SHA-256: 6303720a0921eba36ed544b3a0dc73d3f92fc6473a65d232595b30c375510440
postfix-debuginfo-2.6.6-2.1.el6_0.i686.rpm     MD5: 9c0c1addc4a792f478946b09861ac8d1
SHA-256: bc48c955c37071456134e8ee948b1029e73d34277c58d90842ea0d459c1a93a3
postfix-perl-scripts-2.6.6-2.1.el6_0.i686.rpm     MD5: 4bb8ee4b081ca8e732d44e6167d221ec
SHA-256: a9f5f5eec877f673cc2f9eb86429b4bf4f626cabdd84607bbd38dc8a84c77e0e
 
PPC:
postfix-2.6.6-2.1.el6_0.ppc64.rpm     MD5: 5d11b971142ba3584ed6b658d7f32bbf
SHA-256: eb6554efb96e66c9ab193e1bd1395f293aaf16d732a350ab511befd60053ffb7
postfix-debuginfo-2.6.6-2.1.el6_0.ppc64.rpm     MD5: c6bdd3cceb7c137c2dc3336cf3c40c79
SHA-256: 8dd6c3470143f5c18ff25c7c71e19f36d4ee6ca794ccc3248534c00b084f5e84
postfix-perl-scripts-2.6.6-2.1.el6_0.ppc64.rpm     MD5: 06cc2fb3e63b924140710028623649fd
SHA-256: e8c759fe5574c05f01bf1f8492c232f79f25e4559abd4f2e48ee72c1b1798975
 
s390x:
postfix-2.6.6-2.1.el6_0.s390x.rpm     MD5: fc131f0f20ff4c0e5bd71f47ff53473f
SHA-256: ff0b037e0ba14ff56ea961090bc5105a66bf4f7624680bacf00d7a4c39401e2c
postfix-debuginfo-2.6.6-2.1.el6_0.s390x.rpm     MD5: d7ecc60b0d1ecd8803380a065b7ebab0
SHA-256: f331d78b550edec1e07830f7aff598c64cf51fb1acfcba519f28aa125b3b31ce
postfix-perl-scripts-2.6.6-2.1.el6_0.s390x.rpm     MD5: a87240bb56fcfcfebea30d3a408d4de8
SHA-256: 791a63e30f79eedc3d6a22143c448b588fb9a29c53b8680699fa62487627e550
 
x86_64:
postfix-2.6.6-2.1.el6_0.x86_64.rpm     MD5: b355b5ec9e1dfc370673055626abe48a
SHA-256: c39c9a38bd5f1fbbfe718e4b836111daeb7a616ae13e3f0695c045243e8993ea
postfix-debuginfo-2.6.6-2.1.el6_0.x86_64.rpm     MD5: a95816af850d75ec1aa5ca395613f4d3
SHA-256: 93cc02220cf7b4371eb95051ce2ca45ec9b66250734da7151b7efa783061bdc3
postfix-perl-scripts-2.6.6-2.1.el6_0.x86_64.rpm     MD5: cf382a4c83e3783d86c9cdfb5ea1bb44
SHA-256: e9f7d0ef719d5d403913ddd50e7c07c182a9b0cb94c217a753ea2be061a72d27
 
Red Hat Enterprise Linux Workstation (v. 6)

SRPMS:
postfix-2.6.6-2.1.el6_0.src.rpm
File outdated by:  RHBA-2014:0191
    MD5: 3dbdb496f2f5767f42bb09b0a555f979
SHA-256: 9e9d046d00443a1e7a8bc34f692588d290408da1a4ab3625278f57f496c95928
 
IA-32:
postfix-2.6.6-2.1.el6_0.i686.rpm
File outdated by:  RHBA-2014:0191
    MD5: 92379dbcb9b752033f117f346a178275
SHA-256: 6303720a0921eba36ed544b3a0dc73d3f92fc6473a65d232595b30c375510440
postfix-debuginfo-2.6.6-2.1.el6_0.i686.rpm
File outdated by:  RHBA-2014:0191
    MD5: 9c0c1addc4a792f478946b09861ac8d1
SHA-256: bc48c955c37071456134e8ee948b1029e73d34277c58d90842ea0d459c1a93a3
postfix-perl-scripts-2.6.6-2.1.el6_0.i686.rpm
File outdated by:  RHBA-2014:0191
    MD5: 4bb8ee4b081ca8e732d44e6167d221ec
SHA-256: a9f5f5eec877f673cc2f9eb86429b4bf4f626cabdd84607bbd38dc8a84c77e0e
 
x86_64:
postfix-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: b355b5ec9e1dfc370673055626abe48a
SHA-256: c39c9a38bd5f1fbbfe718e4b836111daeb7a616ae13e3f0695c045243e8993ea
postfix-debuginfo-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: a95816af850d75ec1aa5ca395613f4d3
SHA-256: 93cc02220cf7b4371eb95051ce2ca45ec9b66250734da7151b7efa783061bdc3
postfix-perl-scripts-2.6.6-2.1.el6_0.x86_64.rpm
File outdated by:  RHBA-2014:0191
    MD5: cf382a4c83e3783d86c9cdfb5ea1bb44
SHA-256: e9f7d0ef719d5d403913ddd50e7c07c182a9b0cb94c217a753ea2be061a72d27
 
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

674814 - CVE-2011-0411 postfix: SMTP commands injection during plaintext to TLS session switch


References



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

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