Issued:

2009-06-11

Updated:

2009-06-11

RHSA-2009:1095 - Critical: firefox security update

Synopsis

Critical: firefox security update

Type/Severity

Security Advisory Critical

Topic

Updated firefox packages that fix several security issues are now available for Red Hat Enterprise Linux 4 and 5.

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

Description

Mozilla Firefox is an open source Web browser. XULRunner provides the XUL Runtime environment for Mozilla Firefox.

Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code as the user running Firefox. (CVE-2009-1392, CVE-2009-1832, CVE-2009-1833, CVE-2009-1837, CVE-2009-1838, CVE-2009-1841)

Multiple flaws were found in the processing of malformed, local file content. If a user loaded malicious, local content via the file:// URL, it was possible for that content to access other local data. (CVE-2009-1835, CVE-2009-1839)

A script, privilege elevation flaw was found in the way Firefox loaded XML User Interface Language (XUL) scripts. Firefox and certain add-ons could load malicious content when certain policy checks did not happen. (CVE-2009-1840)

A flaw was found in the way Firefox displayed certain Unicode characters in International Domain Names (IDN). If an IDN contained invalid characters, they may have been displayed as spaces, making it appear to the user that they were visiting a trusted site. (CVE-2009-1834)

A flaw was found in the way Firefox handled error responses returned from proxy servers. If an attacker is able to conduct a man-in-the-middle attack against a Firefox instance that is using a proxy server, they may be able to steal sensitive information from the site the user is visiting. (CVE-2009-1836)

For technical details regarding these flaws, refer to the Mozilla security advisories for Firefox 3.0.11. You can find a link to the Mozilla advisories in the References section of this errata.

All Firefox users should upgrade to these updated packages, which contain Firefox version 3.0.11, which corrects these issues. After installing the update, Firefox must be restarted for the changes to take effect.

Solution

Before applying this update, make sure that all previously-released errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

Updated Packages

• firefox-3.0.11-2.el5_3.src.rpm
• xulrunner-devel-1.9.0.11-3.el5_3.x86_64.rpm
• xulrunner-devel-1.9.0.11-3.el5_3.s390x.rpm
• xulrunner-1.9.0.11-3.el5_3.s390x.rpm
• xulrunner-1.9.0.11-3.el5_3.x86_64.rpm
• firefox-3.0.11-4.el4.ia64.rpm
• firefox-3.0.11-4.el4.x86_64.rpm
• xulrunner-devel-unstable-1.9.0.11-3.el5_3.x86_64.rpm
• xulrunner-devel-unstable-1.9.0.11-3.el5_3.s390x.rpm
• xulrunner-devel-1.9.0.11-3.el5_3.s390.rpm
• firefox-3.0.11-4.el4.i386.rpm
• xulrunner-1.9.0.11-3.el5_3.s390.rpm
• firefox-3.0.11-4.el4.s390x.rpm
• firefox-3.0.11-2.el5_3.x86_64.rpm
• xulrunner-devel-1.9.0.11-3.el5_3.ppc.rpm
• xulrunner-1.9.0.11-3.el5_3.i386.rpm
• xulrunner-1.9.0.11-3.el5_3.ia64.rpm
• firefox-3.0.11-2.el5_3.ia64.rpm
• xulrunner-devel-unstable-1.9.0.11-3.el5_3.ia64.rpm
• xulrunner-devel-unstable-1.9.0.11-3.el5_3.ppc.rpm
• firefox-3.0.11-2.el5_3.s390.rpm
• xulrunner-devel-1.9.0.11-3.el5_3.ppc64.rpm
• firefox-3.0.11-2.el5_3.i386.rpm
• xulrunner-devel-1.9.0.11-3.el5_3.i386.rpm
• firefox-3.0.11-2.el5_3.ppc.rpm
• firefox-3.0.11-2.el5_3.s390x.rpm
• xulrunner-1.9.0.11-3.el5_3.ppc.rpm
• firefox-3.0.11-4.el4.src.rpm
• firefox-3.0.11-4.el4.s390.rpm
• xulrunner-devel-1.9.0.11-3.el5_3.ia64.rpm
• xulrunner-1.9.0.11-3.el5_3.ppc64.rpm
• xulrunner-1.9.0.11-3.el5_3.src.rpm
• firefox-3.0.11-4.el4.ppc.rpm
• xulrunner-devel-unstable-1.9.0.11-3.el5_3.i386.rpm

Fixes

• This content is not included.BZ - 488570
• This content is not included.BZ - 503568
• This content is not included.BZ - 503569
• This content is not included.BZ - 503570
• This content is not included.BZ - 503573
• This content is not included.BZ - 503576
• This content is not included.BZ - 503578
• This content is not included.BZ - 503579
• This content is not included.BZ - 503580
• This content is not included.BZ - 503581
• This content is not included.BZ - 503582
• This content is not included.BZ - 503583

CVEs

• CVE-2009-1833
• CVE-2009-1841
• CVE-2009-1840
• CVE-2009-1838
• CVE-2009-1839
• CVE-2009-1832
• CVE-2009-1392
• CVE-2009-1834
• CVE-2009-1835
• CVE-2009-1836
• CVE-2009-1837

References

• http://www.redhat.com/security/updates/classification/#critical
• Content from www.mozilla.org is not included.Content from www.mozilla.org is not included.http://www.mozilla.org/security/known-vulnerabilities/firefox30.html#firefox3.0.11

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.