Moderate: openchange security, bug fix and enhancement update

Synopsis

Moderate: openchange security, bug fix and enhancement update

Type/Severity

Security Advisory: Moderate

Topic

Updated openchange packages that fix one security issue, several bugs, and
add various enhancements are now available for Red Hat Enterprise Linux 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.

Description

The openchange packages provide libraries to access Microsoft Exchange
servers using native protocols. Evolution-MAPI uses these libraries to
integrate the Evolution PIM application with Microsoft Exchange servers.

A flaw was found in the Samba suite's Perl-based DCE/RPC IDL (PIDL)
compiler. As OpenChange uses code generated by PIDL, this could have
resulted in buffer overflows in the way OpenChange handles RPC calls. With
this update, the code has been generated with an updated version of PIDL to
correct this issue. (CVE-2012-1182)

The openchange packages have been upgraded to upstream version 1.0, which
provides a number of bug fixes and enhancements over the previous version,
including support for the rebased samba4 packages and several API changes.
(BZ#767672, BZ#767678)

This update also fixes the following bugs:

• When the user tried to modify a meeting with one required attendee and
  himself as the organizer, a segmentation fault occurred in the memcpy()
  function. Consequently, the evolution-data-server application terminated
  unexpectedly with a segmentation fault. This bug has been fixed and
  evolution-data-server no longer crashes in the described scenario.
  (BZ#680061)
  
• Prior to this update, OpenChange 1.0 was unable to send messages with
  a large message body or with extensive attachment. This was caused by minor
  issues in OpenChange's exchange.idl definitions. This bug has been fixed
  and OpenChange now sends extensive messages without complications.
  (BZ#870405)
  

All users of openchange are advised to upgrade to these updated packages,
which fix these issues and add these enhancements.

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/knowledge/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386

Fixes

• BZ - 680061 - evolution-data-server crashes in memcpy
• BZ - 685034 - [PATCH] (SIGABRT) FindGoodServer, OpenUserMailbox, exchange_mapi_set_flags
• BZ - 767672 - Rebase openchange libraries
• BZ - 767678 - Patch evolution-mapi to handle new openchange API
• BZ - 804093 - CVE-2012-1182 samba: Multiple heap-based buffer overflows in memory management based on NDR marshalling code output
• BZ - 870405 - Cannot send mail with large message body
• BZ - 903241 - Double-free on message copy/move

CVEs

• CVE-2012-1182

References

• https://access.redhat.com/security/updates/classification/#moderate