RHSA-2005:386 - Security Advisory

Topic

Updated mozilla packages that fix various security bugs are now available.

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

Description

Mozilla is an open source Web browser, advanced email and newsgroup client,
IRC chat client, and HTML editor.

Vladimir V. Perepelitsa discovered a bug in the way Mozilla handles
anonymous functions during regular expression string replacement. It is
possible for a malicious web page to capture a random block of browser
memory. The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CAN-2005-0989 to this issue.

Doron Rosenberg discovered a bug in the way Mozilla displays pop-up
windows. If a user choses to open a pop-up window whose URL is malicious
javascript, the script will be executed with elevated privileges.
(CAN-2005-1153)

A bug was found in the way Mozilla handles the javascript global scope for
a window. It is possible for a malicious web page to define a global
variable known to be used by a different site, allowing malicious code to
be executed in the context of the site. (CAN-2005-1154)

Michael Krax discovered a bug in the way Mozilla handles favicon links. A
malicious web page can programatically define a favicon link tag as
javascript, executing arbitrary javascript with elevated privileges.
(CAN-2005-1155)

Michael Krax discovered a bug in the way Mozilla installed search plugins.
If a user chooses to install a search plugin from a malicious site, the new
plugin could silently overwrite an existing plugin. This could allow the
malicious plugin to execute arbitrary code and stealm sensitive
information. (CAN-2005-1156 CAN-2005-1157)

A bug was found in the way Mozilla validated several XPInstall related
javascript objects. A malicious web page could pass other objects to the
XPInstall objects, resulting in the javascript interpreter jumping to
arbitrary locations in memory. (CAN-2005-1159)

A bug was found in the way the Mozilla privileged UI code handled DOM nodes
from the content window. A malicious web page could install malicious
javascript code or steal data requiring a user to do commonplace actions
such as clicking a link or opening the context menu. (CAN-2005-1160)

Users of Mozilla are advised to upgrade to this updated package which
contains Mozilla version 1.7.7 to correct these issues.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

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 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 Power, big endian 4 ppc

Fixes

• BZ - 155116 - CAN-2005-0989 Multiple Mozilla issues.

CVEs

• CVE-2005-0989
• CVE-2005-1159
• CVE-2005-1160
• CVE-2005-1153
• CVE-2005-1154
• CVE-2005-1155
• CVE-2005-1156
• CVE-2005-1157

References

• http://www.mozilla.org/projects/security/known-vulnerabilities.html#mozilla1.7.7