RHSA-2010:0781 - Security Advisory

Topic

Updated seamonkey packages that fix several security issues are now
available for Red Hat Enterprise Linux 3 and 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.

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-2010-3176, CVE-2010-3180)

A flaw was found in the way the Gopher parser in SeaMonkey converted text
into HTML. A malformed file name on a Gopher server could, when accessed by
a victim running SeaMonkey, allow arbitrary JavaScript to be executed in
the context of the Gopher domain. (CVE-2010-3177)

A flaw was found in the script that launches SeaMonkey. The LD_LIBRARY_PATH
variable was appending a "." character, which could allow a local attacker
to execute arbitrary code with the privileges of a different user running
SeaMonkey, if that user ran SeaMonkey from within an attacker-controlled
directory. (CVE-2010-3182)

It was found that the SSL DHE (Diffie-Hellman Ephemeral) mode
implementation for key exchanges in SeaMonkey accepted DHE keys that were
256 bits in length. This update removes support for 256 bit DHE keys, as
such keys are easily broken using modern hardware. (CVE-2010-3173)

A flaw was found in the way SeaMonkey matched SSL certificates when the
certificates had a Common Name containing a wildcard and a partial IP
address. SeaMonkey incorrectly accepted connections to IP addresses that
fell within the SSL certificate's wildcard range as valid SSL connections,
possibly allowing an attacker to conduct a man-in-the-middle attack.
(CVE-2010-3170)

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 Server 3 x86_64
• Red Hat Enterprise Linux Server 3 ia64
• Red Hat Enterprise Linux Server 3 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 Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 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 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 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 3 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 4.8 ppc

Fixes

• BZ - 630047 - CVE-2010-3170 firefox/nss: Doesn't handle wildcards in Common Name properly
• BZ - 642272 - CVE-2010-3176 Mozilla miscellaneous memory safety hazards
• BZ - 642283 - CVE-2010-3180 Mozilla use-after-free error in nsBarProp
• BZ - 642290 - CVE-2010-3177 Mozilla XSS in gopher parser when parsing hrefs
• BZ - 642300 - CVE-2010-3182 Mozilla unsafe library loading flaw
• BZ - 642302 - CVE-2010-3173 Mozilla insecure Diffie-Hellman key exchange

CVEs

• CVE-2010-3180
• CVE-2010-3182
• CVE-2010-3176
• CVE-2010-3170
• CVE-2010-3173
• CVE-2010-3177

References

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