RHSA-2007:0097 - Security Advisory

Topic

Updated firefox packages that fix several security bugs are now available
for Red Hat Enterprise Linux 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.

Flaws were found in the way Firefox executed malformed JavaScript code. A
malicious web page could cause Firefox to crash or allow arbitrary code
to be executed as the user running Firefox. (CVE-2007-0775, CVE-2007-0777)

Cross-site scripting (XSS) flaws were found in Firefox. A malicious web
page could display misleading information, allowing a user to unknowingly
divulge sensitive information, such as a password. (CVE-2006-6077,
CVE-2007-0995, CVE-2007-0996)

A flaw was found in the way Firefox processed JavaScript contained in
certain tags. A malicious web page could cause Firefox to execute
JavaScript code with the privileges of the user running Firefox.
(CVE-2007-0994)

A flaw was found in the way Firefox cached web pages on the local disk. A
malicious web page may have been able to inject arbitrary HTML into a
browsing session if the user reloaded a targeted site. (CVE-2007-0778)

Certain web content could overlay Firefox user interface elements such as
the hostname and security indicators. A malicious web page could trick a
user into thinking they were visiting a different site. (CVE-2007-0779)

Two flaws were found in Firefox's displaying of blocked popup windows. If a
user could be convinced to open a blocked popup, it was possible to read
arbitrary local files, or conduct a cross-site scripting attack against the
user.
(CVE-2007-0780, CVE-2007-0800)

Two buffer overflow flaws were found in the Network Security Services (NSS)
code for processing the SSLv2 protocol. Connecting to a malicious secure
web server could cause the execution of arbitrary code as the user running
Firefox. (CVE-2007-0008, CVE-2007-0009)

A flaw was found in the way Firefox handled the "location.hostname" value.
A malicious web page could set domain cookies for an arbitrary site, or
possibly perform a cross-site scripting attack. (CVE-2007-0981)

Users of Firefox are advised to upgrade to this erratum package, containing
Firefox version 1.5.0.10 which is not vulnerable to these issues.

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
http://kbase.redhat.com/faq/FAQ_58_10188

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 230050 - CVE-2007-0775 Multiple Firefox flaws (CVE-2007-0777, CVE-2007-0994, CVE-2007-0995, CVE-2007-0996, CVE-2006-6077, CVE-2007-0778, CVE-2007-0779, CVE-2007-0780, CVE-2007-0800, CVE-2007-0008, CVE-2007-0009, CVE-2007-0981)

CVEs

• CVE-2007-0800
• CVE-2007-0777
• CVE-2007-0775
• CVE-2007-0996
• CVE-2007-0995
• CVE-2007-0778
• CVE-2007-0779
• CVE-2007-0008
• CVE-2007-0009
• CVE-2006-6077
• CVE-2007-0981
• CVE-2007-0780
• CVE-2007-0994

References

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