cyrus-imapd security update

Updated cyrus-imapd packages that fix several buffer overflow security
issues are now available.

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

The cyrus-imapd package contains the core of the Cyrus IMAP server.

Several buffer overflow bugs were found in cyrus-imapd. It is possible that
an authenticated malicious user could cause the imap server to crash.
Additionally, a peer news admin could potentially execute arbitrary code on
the imap server when news is received using the fetchnews command. The
Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned
the name CAN-2005-0546 to this issue.

Users of cyrus-imapd are advised to upgrade to these updated packages, which
contain cyrus-imapd version 2.2.12 to correct these issues.

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

149869 - CAN-2005-0546 multiple buffer overflows in cyrus-imapd

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0546