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===================================================================== Red Hat Security Advisory
Synopsis: Moderate: dovecot security update Advisory ID: RHSA-2011:1187-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1187.html Issue date: 2011-08-18 CVE Names: CVE-2011-1929 =====================================================================
1. Summary:
Updated dovecot 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:
RHEL Desktop Workstation (v. 5 client) - i386, x86_64 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 version 4 - i386, x86_64 Red Hat Enterprise Linux ES version 4 - i386, ia64, 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:
Dovecot is an IMAP server for Linux, UNIX, and similar operating systems, primarily written with security in mind.
A denial of service flaw was found in the way Dovecot handled NULL characters in certain header names. A mail message with specially-crafted headers could cause the Dovecot child process handling the target user's connection to crash, blocking them from downloading the message successfully and possibly leading to the corruption of their mailbox. (CVE-2011-1929)
Users of dovecot are advised to upgrade to these updated packages, which contain a backported patch to resolve 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/kb/docs/DOC-11259
5. Bugs fixed (http://bugzilla.redhat.com/):
706286 - CVE-2011-1929 dovecot: potential crash when parsing header names that contain NUL characters
6. Package List:
Red Hat Enterprise Linux AS version 4:
Source: dovecot-0.99.11-10.EL4.src.rpm
i386: dovecot-0.99.11-10.EL4.i386.rpm dovecot-debuginfo-0.99.11-10.EL4.i386.rpm
ia64: dovecot-0.99.11-10.EL4.ia64.rpm dovecot-debuginfo-0.99.11-10.EL4.ia64.rpm
ppc: dovecot-0.99.11-10.EL4.ppc.rpm dovecot-debuginfo-0.99.11-10.EL4.ppc.rpm
s390: dovecot-0.99.11-10.EL4.s390.rpm dovecot-debuginfo-0.99.11-10.EL4.s390.rpm
s390x: dovecot-0.99.11-10.EL4.s390x.rpm dovecot-debuginfo-0.99.11-10.EL4.s390x.rpm
x86_64: dovecot-0.99.11-10.EL4.x86_64.rpm dovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm
Red Hat Enterprise Linux Desktop version 4:
Source: dovecot-0.99.11-10.EL4.src.rpm
i386: dovecot-0.99.11-10.EL4.i386.rpm dovecot-debuginfo-0.99.11-10.EL4.i386.rpm
x86_64: dovecot-0.99.11-10.EL4.x86_64.rpm dovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm
Red Hat Enterprise Linux ES version 4:
Source: dovecot-0.99.11-10.EL4.src.rpm
i386: dovecot-0.99.11-10.EL4.i386.rpm dovecot-debuginfo-0.99.11-10.EL4.i386.rpm
ia64: dovecot-0.99.11-10.EL4.ia64.rpm dovecot-debuginfo-0.99.11-10.EL4.ia64.rpm
x86_64: dovecot-0.99.11-10.EL4.x86_64.rpm dovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm
Red Hat Enterprise Linux WS version 4:
Source: dovecot-0.99.11-10.EL4.src.rpm
i386: dovecot-0.99.11-10.EL4.i386.rpm dovecot-debuginfo-0.99.11-10.EL4.i386.rpm
ia64: dovecot-0.99.11-10.EL4.ia64.rpm dovecot-debuginfo-0.99.11-10.EL4.ia64.rpm
x86_64: dovecot-0.99.11-10.EL4.x86_64.rpm dovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source: dovecot-1.0.7-7.el5_7.1.src.rpm
i386: dovecot-1.0.7-7.el5_7.1.i386.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.i386.rpm
x86_64: dovecot-1.0.7-7.el5_7.1.x86_64.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source: dovecot-1.0.7-7.el5_7.1.src.rpm
i386: dovecot-1.0.7-7.el5_7.1.i386.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.i386.rpm
ia64: dovecot-1.0.7-7.el5_7.1.ia64.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.ia64.rpm
ppc: dovecot-1.0.7-7.el5_7.1.ppc.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.ppc.rpm
s390x: dovecot-1.0.7-7.el5_7.1.s390x.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.s390x.rpm
x86_64: dovecot-1.0.7-7.el5_7.1.x86_64.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: dovecot-2.0.9-2.el6_1.1.src.rpm
i386: dovecot-2.0.9-2.el6_1.1.i686.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-mysql-2.0.9-2.el6_1.1.i686.rpm dovecot-pgsql-2.0.9-2.el6_1.1.i686.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.i686.rpm
ppc64: dovecot-2.0.9-2.el6_1.1.ppc.rpm dovecot-2.0.9-2.el6_1.1.ppc64.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.ppc.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.ppc64.rpm dovecot-mysql-2.0.9-2.el6_1.1.ppc64.rpm dovecot-pgsql-2.0.9-2.el6_1.1.ppc64.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.ppc64.rpm
s390x: dovecot-2.0.9-2.el6_1.1.s390.rpm dovecot-2.0.9-2.el6_1.1.s390x.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.s390.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.s390x.rpm dovecot-mysql-2.0.9-2.el6_1.1.s390x.rpm dovecot-pgsql-2.0.9-2.el6_1.1.s390x.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.s390x.rpm
x86_64: dovecot-2.0.9-2.el6_1.1.i686.rpm dovecot-2.0.9-2.el6_1.1.x86_64.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm dovecot-mysql-2.0.9-2.el6_1.1.x86_64.rpm dovecot-pgsql-2.0.9-2.el6_1.1.x86_64.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
Source: dovecot-2.0.9-2.el6_1.1.src.rpm
i386: dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-devel-2.0.9-2.el6_1.1.i686.rpm
ppc64: dovecot-debuginfo-2.0.9-2.el6_1.1.ppc64.rpm dovecot-devel-2.0.9-2.el6_1.1.ppc64.rpm
s390x: dovecot-debuginfo-2.0.9-2.el6_1.1.s390x.rpm dovecot-devel-2.0.9-2.el6_1.1.s390x.rpm
x86_64: dovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm dovecot-devel-2.0.9-2.el6_1.1.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: dovecot-2.0.9-2.el6_1.1.src.rpm
i386: dovecot-2.0.9-2.el6_1.1.i686.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-mysql-2.0.9-2.el6_1.1.i686.rpm dovecot-pgsql-2.0.9-2.el6_1.1.i686.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.i686.rpm
x86_64: dovecot-2.0.9-2.el6_1.1.i686.rpm dovecot-2.0.9-2.el6_1.1.x86_64.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm dovecot-mysql-2.0.9-2.el6_1.1.x86_64.rpm dovecot-pgsql-2.0.9-2.el6_1.1.x86_64.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 6):
Source: dovecot-2.0.9-2.el6_1.1.src.rpm
i386: dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-devel-2.0.9-2.el6_1.1.i686.rpm
x86_64: dovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm dovecot-devel-2.0.9-2.el6_1.1.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-2011-1929.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/
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