Topic

Updated thunderbird packages that fix several 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.

Description

Mozilla Thunderbird is a standalone mail and newsgroup client.

A cross-site scripting flaw was found in the way Thunderbird handled the
jar: URI scheme. It may be possible for a malicious HTML mail message to
leverage this flaw, and conduct a cross-site scripting attack against a
user running Thunderbird. (CVE-2007-5947)

Several flaws were found in the way Thunderbird processed certain malformed
HTML mail content. A HTML mail message containing malicious content could
cause Thunderbird to crash, or potentially execute arbitrary code as the
user running Thunderbird. (CVE-2007-5959)

A race condition existed when Thunderbird set the "window.location"
property when displaying HTML mail content. This flaw could allow a HTML
mail message to set an arbitrary Referer header, which may lead to a
Cross-site Request Forgery (CSRF) attack against websites that rely only on
the Referer header for protection. (CVE-2007-5960)

All users of thunderbird are advised to upgrade to these updated packages,
which contain backported patches to resolve these issues.

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/FAQ_58_10188

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 i386
• 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 5.1 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 5.1 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.6 ia64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.6 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 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 5 x86_64
• Red Hat Enterprise Linux Desktop 5 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 4.6 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.6 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.6 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 394211 - CVE-2007-5947 Mozilla jar: protocol XSS
• BZ - 394241 - CVE-2007-5959 Multiple flaws in Firefox
• BZ - 394261 - CVE-2007-5960 Mozilla Cross-site Request Forgery flaw

CVEs

• CVE-2007-5947
• CVE-2007-5960
• CVE-2007-5959

References

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