MDKSA-2005:127 - Updated mozilla-thunderbird package
Posted on: 07/29/2005 06:44 AM

An updated mozilla-thunderbird package has been released for Mandriva Linux


Mandriva Linux Security Update Advisory

Package name: mozilla-thunderbird
Advisory ID: MDKSA-2005:127
Date: July 28th, 2005

Affected versions: 10.2

Problem Description:

A number of vulnerabilities were reported and fixed in Thunderbird 1.0.5 and Mozilla 1.7.9. The following vulnerabilities have been backported and patched for this update:

The native implementations of InstallTrigger and other XPInstall- related javascript objects did not properly validate that they were called on instances of the correct type. By passing other objects, even raw numbers, the javascript interpreter would jump to the wrong place in memory. Although no proof of concept has been developed we believe this could be exploited (MFSA 2005-40).

moz_bug_r_a4 reported several exploits giving an attacker the ability to install malicious code or steal data, requiring only that the user do commonplace actions like clicking on a link or open the context menu. The common cause in each case was privileged UI code ("chrome") being overly trusting of DOM nodes from the content window. Scripts in the web page can override properties and methods of DOM nodes and shadow the native values, unless steps are taken to get the true underlying values (MFSA 2005-41).

Additional checks were added to make sure Javascript eval and Script objects are run with the privileges of the context that created them, not the potentially elevated privilege of the context calling them in order to protect against an additional variant of MFSA 2005-41 (MFSA 2005-44).

In several places the browser UI did not correctly distinguish between true user events, such as mouse clicks or keystrokes, and synthetic events genenerated by web content. The problems ranged from minor annoyances like switching tabs or entering full-screen mode, to a variant on MFSA 2005-34 Synthetic events are now prevented from reaching the browser UI entirely rather than depend on each potentially spoofed function to protect itself from untrusted events (MFSA 2005-45).

Scripts in XBL controls from web content continued to be run even when Javascript was disabled. By itself this causes no harm, but it could be combined with most script-based exploits to attack people running vulnerable versions who thought disabling javascript would protect them. In the Thunderbird and Mozilla Suite mail clients Javascript is disabled by default for protection against denial-of-service attacks and worms; this vulnerability could be used to bypass that protection (MFSA 2005-46).

When InstallVersion.compareTo() is passed an object rather than a string it assumed the object was another InstallVersion without verifying it. When passed a different kind of object the browser would generally crash with an access violation. shutdown has demonstrated that different javascript objects can be passed on some OS versions to get control over the instruction pointer. We assume this could be developed further to run arbitrary machine code if the attacker can get exploit code loaded at a predictable address (MFSA 2005-50).

A child frame can call top.focus() even if the framing page comes from a different origin and has overridden the focus() routine. The call is made in the context of the child frame. The attacker would look for a target site with a framed page that makes this call but doesn't verify that its parent comes from the same site. The attacker could steal cookies and passwords from the framed page, or take actions on behalf of a signed-in user. This attack would work only against sites that use frames in this manner (MFSA 2005-52).

Parts of the browser UI relied too much on DOM node names without taking different namespaces into account and verifying that nodes really were of the expected type. An XHTML document could be used to create fake lt;IMGgt; elements, for example, with content-defined properties that the browser would access as if they were the trusted built-in properties of the expected HTML elements. The severity of the vulnerability would depend on what the attacker could convince the victim to do, but could result in executing user-supplied script with elevated "chrome" privileges. This could be used to install malicious software on the victim's machine (MFSA 2005-55).

Improper cloning of base objects allowed web content scripts to walk up the prototype chain to get to a privileged object. This could be used to execute code with enhanced privileges (MFSA 2005-56).

The updated packages have been patched to address these issue.



Updated Packages:

Mandrakelinux 10.2:
c5513d4936daccacf32a269955aab5e3 10.2/RPMS/mozilla-thunderbird-1.0.2-2.1.102mdk.i586.rpm
47c31106dcd41d9ebc7cf75db8c7cd8b 10.2/RPMS/mozilla-thunderbird-devel-1.0.2-2.1.102mdk.i586.rpm
348c4fef5cd18162ef7012176db573ee 10.2/RPMS/mozilla-thunderbird-enigmail-1.0.2-2.1.102mdk.i586.rpm
ba650af5452d16435b872b1bdb8e7c13 10.2/RPMS/mozilla-thunderbird-enigmime-1.0.2-2.1.102mdk.i586.rpm
893d9c6ed194b8ec828aada5511e0404 10.2/SRPMS/mozilla-thunderbird-1.0.2-2.1.102mdk.src.rpm

Mandrakelinux 10.2/X86_64:
c2a98ab44b911f192d5d16ba3db2817e x86_64/10.2/RPMS/mozilla-thunderbird-1.0.2-2.1.102mdk.x86_64.rpm
621eb09e3cbaa82dea7a4f1ce7e7381a x86_64/10.2/RPMS/mozilla-thunderbird-devel-1.0.2-2.1.102mdk.x86_64.rpm
f206ad704f5167a45eeeb6f0bc0956e2 x86_64/10.2/RPMS/mozilla-thunderbird-enigmail-1.0.2-2.1.102mdk.x86_64.rpm
ac1b7057ecb344292f9264131ecaa93c x86_64/10.2/RPMS/mozilla-thunderbird-enigmime-1.0.2-2.1.102mdk.x86_64.rpm
893d9c6ed194b8ec828aada5511e0404 x86_64/10.2/SRPMS/mozilla-thunderbird-1.0.2-2.1.102mdk.src.rpm

To upgrade automatically use MandrakeUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the GPG public key of the Mandriva Security Team by executing:

gpg --recv-keys --keyserver 0x22458A98

You can view other update advisories for Mandriva Linux at:

If you want to report vulnerabilities, please contact


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