Stay Secure with the Latest Linux Advisories

security advisorymoderatedenial of service

Red Hat 6/7: RHSA-2014:0790-01 Moderate: Dovecot DoS Issue

Updated dovecot packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. The Red Hat Security Response Team has rated this update as having Moderate [More...]. ==================================================================== Red Hat Security Advisory Synopsis: Moderate: dovecot security update Advisory ID: RHSA-2014:0790-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2014:0790.html Issue date: 2014-06-25 CVE Names: CVE-2014-3430 ==================================================================== 1. Summary: Updated dovecot packages that fix one security issue are now available for Red Hat Enterprise Linux 6 and 7. 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 Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: Dovecot is an IMAP server, written with security primarily in mind, for Linux and other UNIX-like systems. It also contains a small POP3 server. It supports mail in both the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. It was discovered that Dovecot did not properly discard connections trapped in the SSL/TLS handshake phase. A remote attacker could use this flaw to cause a denial of service on an IMAP/POP3 server by exhausting the pool of available connections and preventing further, legitimate connections to the IMAP/POP3server to be made. (CVE-2014-3430) All dovecot users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the dovecot 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/site/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1096402 - CVE-2014-3430 dovecot: denial of service through maxxing out SSL connections 6. Package List: Red Hat Enterprise Linux Server (v. 6): Source: dovecot-2.0.9-7.el6_5.1.src.rpm i386: dovecot-2.0.9-7.el6_5.1.i686.rpm dovecot-debuginfo-2.0.9-7.el6_5.1.i686.rpm dovecot-mysql-2.0.9-7.el6_5.1.i686.rpm dovecot-pgsql-2.0.9-7.el6_5.1.i686.rpm dovecot-pigeonhole-2.0.9-7.el6_5.1.i686.rpm ppc64: dovecot-2.0.9-7.el6_5.1.ppc.rpm dovecot-2.0.9-7.el6_5.1.ppc64.rpm dovecot-debuginfo-2.0.9-7.el6_5.1.ppc.rpm dovecot-debuginfo-2.0.9-7.el6_5.1.ppc64.rpm dovecot-mysql-2.0.9-7.el6_5.1.ppc64.rpm dovecot-pgsql-2.0.9-7.el6_5.1.ppc64.rpm dovecot-pigeonhole-2.0.9-7.el6_5.1.ppc64.rpm s390x: dovecot-2.0.9-7.el6_5.1.s390.rpm dovecot-2.0.9-7.el6_5.1.s390x.rpm dovecot-debuginfo-2.0.9-7.el6_5.1.s390.rpm dovecot-debuginfo-2.0.9-7.el6_5.1.s390x.rpm dovecot-mysql-2.0.9-7.el6_5.1.s390x.rpm dovecot-pgsql-2.0.9-7.el6_5.1.s390x.rpm dovecot-pigeonhole-2.0.9-7.el6_5.1.s390x.rpm x86_64: dovecot-2.0.9-7.el6_5.1.i686.rpm dovecot-2.0.9-7.el6_5.1.x86_64.rpm dovecot-debuginfo-2.0.9-7.el6_5.1.i686.rpm dovecot-debuginfo-2.0.9-7.el6_5.1.x86_64.rpm dovecot-mysql-2.0.9-7.el6_5.1.x86_64.rpm dovecot-pgsql-2.0.9-7.el6_5.1.x86_64.rpm dovecot-pigeonhole-2.0.9-7.el6_5.1.x86_64.rpm Red Hat Enterprise Linux Server Optional (v.6): Source: dovecot-2.0.9-7.el6_5.1.src.rpm i386: dovecot-debuginfo-2.0.9-7.el6_5.1.i686.rpm dovecot-devel-2.0.9-7.el6_5.1.i686.rpm ppc64: dovecot-debuginfo-2.0.9-7.el6_5.1.ppc64.rpm dovecot-devel-2.0.9-7.el6_5.1.ppc64.rpm s390x: dovecot-debuginfo-2.0.9-7.el6_5.1.s390x.rpm dovecot-devel-2.0.9-7.el6_5.1.s390x.rpm x86_64: dovecot-debuginfo-2.0.9-7.el6_5.1.x86_64.rpm dovecot-devel-2.0.9-7.el6_5.1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: dovecot-2.0.9-7.el6_5.1.src.rpm i386: dovecot-2.0.9-7.el6_5.1.i686.rpm dovecot-debuginfo-2.0.9-7.el6_5.1.i686.rpm dovecot-mysql-2.0.9-7.el6_5.1.i686.rpm dovecot-pgsql-2.0.9-7.el6_5.1.i686.rpm dovecot-pigeonhole-2.0.9-7.el6_5.1.i686.rpm x86_64: dovecot-2.0.9-7.el6_5.1.i686.rpm dovecot-2.0.9-7.el6_5.1.x86_64.rpm dovecot-debuginfo-2.0.9-7.el6_5.1.i686.rpm dovecot-debuginfo-2.0.9-7.el6_5.1.x86_64.rpm dovecot-mysql-2.0.9-7.el6_5.1.x86_64.rpm dovecot-pgsql-2.0.9-7.el6_5.1.x86_64.rpm dovecot-pigeonhole-2.0.9-7.el6_5.1.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): Source: dovecot-2.0.9-7.el6_5.1.src.rpm i386: dovecot-debuginfo-2.0.9-7.el6_5.1.i686.rpm dovecot-devel-2.0.9-7.el6_5.1.i686.rpm x86_64: dovecot-debuginfo-2.0.9-7.el6_5.1.x86_64.rpm dovecot-devel-2.0.9-7.el6_5.1.x86_64.rpm Red Hat Enterprise Linux Server (v.7): Source: dovecot-2.2.10-4.el7_0.1.src.rpm ppc64: dovecot-2.2.10-4.el7_0.1.ppc.rpm dovecot-2.2.10-4.el7_0.1.ppc64.rpm dovecot-debuginfo-2.2.10-4.el7_0.1.ppc.rpm dovecot-debuginfo-2.2.10-4.el7_0.1.ppc64.rpm dovecot-mysql-2.2.10-4.el7_0.1.ppc64.rpm dovecot-pgsql-2.2.10-4.el7_0.1.ppc64.rpm dovecot-pigeonhole-2.2.10-4.el7_0.1.ppc64.rpm s390x: dovecot-2.2.10-4.el7_0.1.s390.rpm dovecot-2.2.10-4.el7_0.1.s390x.rpm dovecot-debuginfo-2.2.10-4.el7_0.1.s390.rpm dovecot-debuginfo-2.2.10-4.el7_0.1.s390x.rpm dovecot-mysql-2.2.10-4.el7_0.1.s390x.rpm dovecot-pgsql-2.2.10-4.el7_0.1.s390x.rpm dovecot-pigeonhole-2.2.10-4.el7_0.1.s390x.rpm x86_64: dovecot-2.2.10-4.el7_0.1.i686.rpm dovecot-2.2.10-4.el7_0.1.x86_64.rpm dovecot-debuginfo-2.2.10-4.el7_0.1.i686.rpm dovecot-debuginfo-2.2.10-4.el7_0.1.x86_64.rpm dovecot-mysql-2.2.10-4.el7_0.1.x86_64.rpm dovecot-pgsql-2.2.10-4.el7_0.1.x86_64.rpm dovecot-pigeonhole-2.2.10-4.el7_0.1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: dovecot-2.2.10-4.el7_0.1.src.rpm x86_64: dovecot-2.2.10-4.el7_0.1.i686.rpm dovecot-2.2.10-4.el7_0.1.x86_64.rpm dovecot-debuginfo-2.2.10-4.el7_0.1.i686.rpm dovecot-debuginfo-2.2.10-4.el7_0.1.x86_64.rpm dovecot-mysql-2.2.10-4.el7_0.1.x86_64.rpm dovecot-pgsql-2.2.10-4.el7_0.1.x86_64.rpm dovecot-pigeonhole-2.2.10-4.el7_0.1.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://access.redhat.com/security/cve/CVE-2014-3430 https://access.redhat.com/security/updates/classification#moderate 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact Copyright 2014 Red Hat, Inc. . Revised Dovecot packages released for CentOS addressing a moderate vulnerability concerning denial-of-service exploits.. Dovecot Security Update, Red Hat Advisory, IMAP Server Security, DoS Mitigation. . LinuxSecurity.com Team

Jun 25, 2014 Red Hat