RHSA-2009:0355 - Security Advisory

Topic

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

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

Description

Evolution is the integrated collection of e-mail, calendaring, contact
management, communications, and personal information management (PIM) tools
for the GNOME desktop environment.

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 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 did not properly validate NTLM (NT LAN
Manager) authentication challenge packets. A malicious server using NTLM
authentication could cause evolution 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 and
evolution-data-server. This could cause evolution, or 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 and evolution-data-server are advised to upgrade to
these updated packages, which contain backported patches to correct these
issues. All running instances of evolution and evolution-data-server must
be restarted for the update to take effect.

Solution

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

Affected Products

• Red Hat Enterprise Linux Server 4 x86_64
• Red Hat Enterprise Linux Server 4 ia64
• Red Hat Enterprise Linux Server 4 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.7 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.7 ia64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.7 i386
• Red Hat Enterprise Linux Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux for IBM z Systems 4 s390x
• Red Hat Enterprise Linux for IBM z Systems 4 s390
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.7 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.7 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.7 ppc

Fixes

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

CVEs

• CVE-2009-0587
• CVE-2009-0547
• CVE-2009-0582

References

• http://www.redhat.com/security/updates/classification/#moderate