Updated mozilla packages that fix several security bugs are now available.
This update has been rated as having critical security impact by the Red
Hat Security Response Team.
Mozilla is an open source Web browser, advanced email and newsgroup client,
IRC chat client, and HTML editor.
A bug was found in the way Mozilla processes XBM image files. If a user
views a specially crafted XBM file, it becomes possible to execute
arbitrary code as the user running Mozilla. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2005-2701 to
A bug was found in the way Mozilla processes certain Unicode
sequences. It may be possible to execute arbitrary code as the user running
Mozilla, if the user views a specially crafted Unicode sequence.
A bug was found in the way Mozilla makes XMLHttp requests. It is possible
that a malicious web page could leverage this flaw to exploit other proxy
or server flaws from the victim's machine. It is also possible that this
flaw could be leveraged to send XMLHttp requests to hosts other than the
originator; the default behavior of the browser is to disallow this.
A bug was found in the way Mozilla implemented its XBL interface. It may be
possible for a malicious web page to create an XBL binding in a way
Please note that in Mozilla 1.7.10 this issue is not directly exploitable
and would need to leverage other unknown exploits. (CAN-2005-2704)
favorable conditions, it may be possible for a malicious web page to
execute arbitrary code as the user running Mozilla. (CAN-2005-2705)
A bug was found in the way Mozilla displays about: pages. It is possible
for a malicious web page to open an about: page, such as about:mozilla, in
A bug was found in the way Mozilla opens new windows. It is possible for a
malicious web site to construct a new window without any user interface
components, such as the address bar and the status bar. This window could
then be used to mislead the user for malicious purposes. (CAN-2005-2707)
Users of Mozilla are advised to upgrade to this updated package that
contains Mozilla version 1.7.12 and is not vulnerable to these issues.