SuSE: 2006-048: MozillaFirefox, MozillaThunderbird, Seamonkey Security Update
Summary
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
______________________________________________________________________________
SUSE Security Announcement
Package: MozillaFirefox,MozillaThunderbird,Seamonkey
Announcement ID: SUSE-SA:2006:048
Date: Wed, 16 Aug 2006 17:00:00 +0000
Affected Products: Novell Linux Desktop 9
SLE SDK 10
SUSE LINUX 10.1
SUSE LINUX 10.0
SUSE LINUX 9.3
SUSE LINUX 9.2
SUSE SLES 10
Vulnerability Type: remote code execution
Severity (1-10): 8
SUSE Default Package: yes
Cross-References: CVE-2006-3113, CVE-2006-3677, CVE-2006-3801
CVE-2006-3802, CVE-2006-3803, CVE-2006-3804
CVE-2006-3805, CVE-2006-3806, CVE-2006-3807
CVE-2006-3808, CVE-2006-3809, CVE-2006-3810
CVE-2006-3811, CVE-2006-3812, MFSA 2006-01
MFSA 2006-10, MFSA 2006-44, MFSA 2006-45
MFSA 2006-46, MFSA 2006-47, MFSA 2006-48
MFSA 2006-49, MFSA 2006-50, MFSA 2006-51
MFSA 2006-52, MFSA 2006-53, MFSA 2006-54
MFSA 2006-55, MFSA 2006-56
Content of This Advisory:
1) Security Vulnerability Resolved:
various mozilla browser security problems
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
See SUSE Security Summary Report.
6) Authenticity Verification and Additional Information
______________________________________________________________________________
1) Problem Description and Brief Discussion
To fix various security problems we released update packages that
bring Mozilla Firefox to version 1.5.0.6, MozillaThunderdbird to
version 1.5.0.5 and the Seamonkey Suite to version 1.0.3.
Note that on Novell Linux Desktop 9 and SUSE Linux 9.2 up to 10.0
this is a major version upgrade of Mozilla Firefox, please check if
your Firefox plugins are still working.
Still missing are updates for the (discontinued) Mozilla Suite.
More details on the security problems can be found on:
https://www.mozilla.org/en-US/security/known-vulnerabilities/
The update includes fixes to the following security problems:
- CVE-2006-3801/MFSA 2006-44: Code execution through deleted frame reference
Thilo Girmann discovered that in certain circumstances a JavaScript
reference to a frame or window was not properly cleared when the
referenced content went away, and he demonstrated that this pointer
to a deleted object could be used to execute native code supplied
by the attacker.
- CVE-2006-3677/MFSA 2006-45: Javascript navigator Object Vulnerability
An anonymous researcher for TippingPoint and the Zero Day Initiative
showed that when used in a web page Java would reference properties
of the window.navigator object as it started up. If the page replaced
the navigator object before starting Java then the browser would
crash in a way that could be exploited to run native code supplied
by the attacker.
- CVE-2006-3113/MFSA 2006-46: Memory corruption with simultaneous events
Secunia Research has discovered a vulnerability in Mozilla Firefox
1.5 branch, which can be exploited by malicious people to compromise
a user's system.
The vulnerability is caused due to an memory corruption error within
the handling of simultaneously happening XPCOM events, which leads
to use of a deleted timer object. This generally results in a crash
but potentially could be exploited to execute arbitrary code on a
user's system when a malicious website is visited.
- CVE-2006-3802/MFSA 2006-47: Native DOM methods can be hijacked across
domains
A malicious page can hijack native DOM methods on a document object
in another domain, which will run the attacker's script when called
by the victim page. This could be used to steal login cookies,
password, or other sensitive data on the target page, or to perform
actions on behalf of a logged-in user.
Access checks on all other properties and document nodes are
performed correctly. This cross-site scripting (XSS) attack is
limited to pages which use standard DOM methods of the top-level
document object, such as document.getElementById(). This includes
many popular sites, especially the newer ones that offer rich
interaction to the user.
- CVE-2006-3803/MFSA 2006-48: JavaScript new Function race condition
H. D. Moore reported a testcase that was able to trigger a race
condition where JavaScript garbage collection deleted a temporary
variable still being used in the creation of a new Function
object. The resulting use of a deleted object may be potentially
exploitable to run native code provided by the attacker.
- CVE-2006-3804/MFSA 2006-49: Heap buffer overwrite on malformed VCard
A VCard attachment with a malformed base64 field (such as a photo)
can trigger a heap buffer overwrite. These have proven exploitable
in the past, though in this case the overwrite is accompanied by
an integer underflow that would attempt to copy more data than the
typical machine has, leading to a crash.
- CVE-2006-3805/CVE-2006-3806/MFSA 2006-50: JavaScript engine vulnerabilities
Continuing our security audit of the JavaScript engine, Mozilla
developers found and fixed several potential vulnerabilities.
Igor Bukanov and shutdown found additional places where an untimely
garbage collection could delete a temporary object that was in active
use (similar to MFSA 2006-01 and MFSA 2006-10). Some of these may
allow an attacker to run arbitrary code given the right conditions.
Georgi Guninski found potential integer overflow issues with long
strings in the toSource() methods of the Object, Array and String
objects as well as string function arguments.
- CVE-2006-3807/MFSA 2006-51: Privilege escalation using named-functions
and redefined "new Object()"
moz_bug_r_a4 discovered that named JavaScript functions have
a parent object created using the standard Object() constructor
(ECMA-specified behavior) and that this constructor can be redefined
by script (also ECMA-specified behavior). If the Object() constructor
is changed to return a reference to a privileged object with useful
properties it is possible to have attacker-supplied script excuted
with elevated privileges by calling the function. This could be
used to install malware or take other malicious actions.
Our fix involves calling the internal Object constructor which
appears to be what other ECMA-compatible interpreters do.
- CVE-2006-3808/MFSA 2006-52: PAC privilege escalation using
Function.prototype.call
moz_bug_r_a4 reports that a malicious Proxy AutoConfig (PAC)
server could serve a PAC script that can execute code with elevated
privileges by setting the required FindProxyForURL function to
the eval method on a privileged object that leaked into the PAC
sandbox. By redirecting the victim to a specially-crafted URL --
easily done since the PAC script controls which proxy to use --
the URL "hostname" can be executed as privileged script.
A malicious proxy server can perform spoofing attacks on the user
so it was already important to use a trustworthy PAC server.
- CVE-2006-3809/MFSA 2006-53: UniversalBrowserRead privilege escalation
shutdown reports that scripts granted the UniversalBrowserRead
privilege can leverage that into the equivalent of the far more
powerful UniversalXPConnect since they are allowed to "read" into
a privileged context. This allows the attacker the ability to run
scripts with the full privelege of the user running the browser,
possibly installing malware or snooping on private data. This has
been fixed so that UniversalBrowserRead and UniversalBrowserWrite
are limited to reading from and writing into only normally-privileged
browser windows and frames.
- CVE-2006-3810/MFSA 2006-54: XSS with XPCNativeWrapper(window).Function(...)
shutdown reports that cross-site scripting (XSS) attacks could be
performed using the construct XPCNativeWrapper(window).Function(...),
which created a function that appeared to belong to the window in
question even after it had been navigated to the target site.
- CVE-2006-3811/MFSA 2006-55: Crashes with evidence of memory corruption
As part of the Firefox 1.5.0.5 stability and security release,
developers in the Mozilla community looked for and fixed several
crash bugs to improve the stability of Mozilla clients. Some of
these crashes showed evidence of memory corruption that we presume
could be exploited to run arbitrary code with enough effort.
- CVE-2006-3812/MFSA 2006-56: chrome: scheme loading remote content
Benjamin Smedberg discovered that chrome URL's could be made to
reference remote files, which would run scripts with full privilege.
There is no known way for web content to successfully load a
chrome: url, but if a user could be convinced to do so manually
(perhaps by copying a link and pasting it into the location bar)
this could be exploited.
2) Solution or Work-Around
There is no known workaround, please install the update packages.
If you are using the old Mozilla Suite browser we recommend no longer
using it, but switching to Mozilla Firefox, konqueror or Opera.
3) Special Instructions and Notes
Please close and restart all running instances of Mozilla Firefox
after the update.
4) Package Location and Checksums
The preferred method for installing security updates is to use the YaST
Online Update (YOU) tool. YOU detects which updates are required and
automatically performs the necessary steps to verify and install them.
Alternatively, download the update packages for your distribution manually
and verify their integrity by the methods listed in Section 6 of this
announcement. Then install the packages using the command
rpm -Fhv
References
