Ubuntu 5.04 / 5.10 : firefox, mozilla-firefox vulnerabilities (USN-296-2)

Ubuntu Security Notice (C) 2006-2013 Canonical, Inc. / NASL script (C) 2007-2013 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related patches.

Description :

USN-296-1 fixed several vulnerabilities in Firefox for the Ubuntu 6.06
LTS release. This update provides the corresponding fixes for Ubuntu
5.04 and Ubuntu 5.10.

For reference, these are the details of the original USN :

Jonas Sicking discovered that under some circumstances persisted XUL
attributes are associated with the wrong URL. A malicious web site
could exploit this to execute arbitrary code with the privileges of
the user. (MFSA 2006-35, CVE-2006-2775)

Paul Nickerson discovered that content-defined setters on an
object prototype were getting called by privileged UI code.
It was demonstrated that this could be exploited to run
arbitrary web script with full user privileges (MFSA
2006-37, CVE-2006-2776). A similar attack was discovered by
moz_bug_r_a4 that leveraged SelectionObject notifications
that were called in privileged context. (MFSA 2006-43,
CVE-2006-2777)

Mikolaj Habryn discovered a buffer overflow in the
crypto.signText() function. By tricking a user to visit a
site with an SSL certificate with specially crafted optional
Certificate Authority name arguments, this could potentially
be exploited to execute arbitrary code with the user's
privileges. (MFSA 2006-38, CVE-2006-2778)

The Mozilla developer team discovered several bugs that lead
to crashes with memory corruption. These might be
exploitable by malicious web sites to execute arbitrary code
with the privileges of the user. (MFSA 2006-32,
CVE-2006-2779, CVE-2006-2780, CVE-2006-2788)

Chuck McAuley reported that the fix for CVE-2006-1729 (file
stealing by changing input type) was not sufficient to
prevent all variants of exploitation. (MFSA 2006-41,
CVE-2006-2782)

Masatoshi Kimura found a way to bypass web input sanitizers
which filter out JavaScript. By inserting 'Unicode
Byte-order-Mark (BOM)' characters into the HTML code (e. g.
'<scr[BOM]ipt>'), these filters might not recognize the tags
anymore
however, Firefox would still execute them since BOM
markers are filtered out before processing the page. (MFSA
2006-42, CVE-2006-2783)

Paul Nickerson noticed that the fix for CVE-2005-0752
(JavaScript privilege escalation on the plugins page) was
not sufficient to prevent all variants of exploitation.
(MFSA 2006-36, CVE-2006-2784)

Paul Nickerson demonstrated that if an attacker could
convince a user to right-click on a broken image and choose
'View Image' from the context menu then he could get
JavaScript to run on a site of the attacker's choosing. This
could be used to steal login cookies or other confidential
information from the target site. (MFSA 2006-34,
CVE-2006-2785)

Kazuho Oku discovered various ways to perform HTTP response
smuggling when used with certain proxy servers. Due to
different interpretation of nonstandard HTTP headers in
Firefox and the proxy server, a malicious web site can
exploit this to send back two responses to one request. The
second response could be used to steal login cookies or
other sensitive data from another opened web site. (MFSA
2006-33, CVE-2006-2786).

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)