-----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----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce