Moderate: evolution-data-server security update

Updated evolution-data-server and evolution28-evolution-data-server
packages that fix multiple security issues are now available for Red Hat
Enterprise Linux 4 and 5.

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

Evolution Data Server provides a unified back-end for applications which
interact with contacts, task, and calendar information. Evolution Data
Server was originally developed as a back-end for Evolution, but is now
used by multiple other applications.

Evolution Data Server did not properly check the Secure/Multipurpose
Internet Mail Extensions (S/MIME) signatures used for public key encryption
and signing of e-mail messages. An attacker could use this flaw to spoof a
signature by modifying the text of the e-mail message displayed to the
user. (CVE-2009-0547)

It was discovered that Evolution Data Server did not properly validate NTLM
(NT LAN Manager) authentication challenge packets. A malicious server using
NTLM authentication could cause an application using Evolution Data Server
to disclose portions of its memory or crash during user authentication.
(CVE-2009-0582)

Multiple integer overflow flaws which could cause heap-based buffer
overflows were found in the Base64 encoding routines used by Evolution Data
Server. This could cause an application using Evolution Data Server to
crash, or, possibly, execute an arbitrary code when large untrusted data
blocks were Base64-encoded. (CVE-2009-0587)

All users of evolution-data-server and evolution28-evolution-data-server
are advised to upgrade to these updated packages, which contain backported
patches to correct these issues. All running instances of Evolution Data
Server and applications using it (such as Evolution) must be restarted for
the update to take effect.

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

484925 - CVE-2009-0547 evolution-data-server: S/MIME signatures are considered to be valid even for modified messages (MITM)
487685 - CVE-2009-0582 evolution-data-server: insufficient checking of NTLM authentication challenge packets
488226 - CVE-2009-0587 evolution-data-server: integer overflow in base64 encoding functions

https://www.redhat.com/security/data/cve/CVE-2009-0547.html
https://www.redhat.com/security/data/cve/CVE-2009-0582.html
https://www.redhat.com/security/data/cve/CVE-2009-0587.html
http://www.redhat.com/security/updates/classification/#moderate