RHSA-2011:0313 - Security Advisory

Topic

Updated seamonkey packages that fix several security issues are now
available for Red Hat Enterprise Linux 4.

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

SeaMonkey is an open source web browser, email and newsgroup client, IRC
chat client, and HTML editor.

A flaw was found in the way SeaMonkey handled dialog boxes. An attacker
could use this flaw to create a malicious web page that would present a
blank dialog box that has non-functioning buttons. If a user closes the
dialog box window, it could unexpectedly grant the malicious web page
elevated privileges. (CVE-2011-0051)

Several flaws were found in the processing of malformed web content. A web
page containing malicious content could cause SeaMonkey to crash or,
potentially, execute arbitrary code with the privileges of the user running
SeaMonkey. (CVE-2011-0053)

A flaw was found in the way SeaMonkey handled plug-ins that perform HTTP
requests. If a plug-in performed an HTTP request, and the server sent a 307
redirect response, the plug-in was not notified, and the HTTP request was
forwarded. The forwarded request could contain custom headers, which could
result in a Cross Site Request Forgery attack. (CVE-2011-0059)

All SeaMonkey users should upgrade to these updated packages, which correct
these issues. After installing the update, SeaMonkey must be restarted for
the changes 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
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 4.8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.8 ia64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 4.8 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 4.8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 4.8 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.8 ppc

Fixes

• BZ - 675082 - CVE-2011-0053 Mozilla miscellaneous memory safety hazards (MFSA 2011-01)
• BZ - 675087 - CVE-2011-0051 Mozilla recursive eval call causes confirm dialog to evaluate to true (MFSA 2011-02)
• BZ - 681369 - CVE-2011-0059 Mozilla CSRF risk with plugins and 307 redirects (MFSA 2011-10)

CVEs

• CVE-2011-0053
• CVE-2011-0059
• CVE-2011-0051

References

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