RHSA-2011:0475 - Security Advisory

Topic

An updated thunderbird package that fixes several security issues is now
available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having critical
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

Description

Mozilla Thunderbird is a standalone mail and newsgroup client.

Several flaws were found in the processing of malformed HTML content. An
HTML mail message containing malicious content could possibly lead to
arbitrary code execution with the privileges of the user running
Thunderbird. (CVE-2011-0080, CVE-2011-0081)

An arbitrary memory write flaw was found in the way Thunderbird handled
out-of-memory conditions. If all memory was consumed when a user viewed a
malicious HTML mail message, it could possibly lead to arbitrary code
execution with the privileges of the user running Thunderbird.
(CVE-2011-0078)

An integer overflow flaw was found in the way Thunderbird handled the HTML
frameset tag. An HTML mail message with a frameset tag containing large
values for the "rows" and "cols" attributes could trigger this flaw,
possibly leading to arbitrary code execution with the privileges of the
user running Thunderbird. (CVE-2011-0077)

A flaw was found in the way Thunderbird handled the HTML iframe tag. An
HTML mail message with an iframe tag containing a specially-crafted source
address could trigger this flaw, possibly leading to arbitrary code
execution with the privileges of the user running Thunderbird.
(CVE-2011-0075)

A flaw was found in the way Thunderbird displayed multiple marquee
elements. A malformed HTML mail message could cause Thunderbird to execute
arbitrary code with the privileges of the user running Thunderbird.
(CVE-2011-0074)

A flaw was found in the way Thunderbird handled the nsTreeSelection
element. Malformed content could cause Thunderbird to execute arbitrary
code with the privileges of the user running Thunderbird. (CVE-2011-0073)

A directory traversal flaw was found in the Thunderbird resource://
protocol handler. Malicious content could cause Thunderbird to access
arbitrary files accessible to the user running Thunderbird. (CVE-2011-0071)

A double free flaw was found in the way Thunderbird handled
"application/http-index-format" documents. A malformed HTTP response could
cause Thunderbird to execute arbitrary code with the privileges of the user
running Thunderbird. (CVE-2011-0070)

All Thunderbird users should upgrade to this updated package, which
resolves these issues. All running instances of Thunderbird must be
restarted for the update to take effect.

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/kb/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• 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
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 700603 - CVE-2011-0078 Mozilla OOM condition arbitrary memory write (MFSA 2011-12)
• BZ - 700613 - CVE-2011-0077 Mozilla integer overflow in frameset spec (MFSA 2011-12)
• BZ - 700615 - CVE-2011-0075 Mozilla crash from bad iframe source (MFSA 2011-12)
• BZ - 700617 - CVE-2011-0074 Mozilla crash from several marquee elements (MFSA 2011-12)
• BZ - 700619 - CVE-2011-0073 Mozilla dangling pointer flaw (MFSA 2011-13)
• BZ - 700635 - CVE-2011-0071 Mozilla directory traversal via resource protocol (MFSA 2011-16)
• BZ - 700640 - CVE-2011-0070 Mozilla double free flaw (MFSA 2011-12)
• BZ - 700676 - CVE-2011-0081 Mozilla memory safety issue (MFSA 2011-12)
• BZ - 700677 - CVE-2011-0080 Mozilla memory safety issue (MFSA 2011-12)

CVEs

• CVE-2011-0077
• CVE-2011-0074
• CVE-2011-0075
• CVE-2011-0073
• CVE-2011-0078
• CVE-2011-0080
• CVE-2011-0070
• CVE-2011-0071
• CVE-2011-0081

References

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