Vulnerability Instance

As part of the Firefox 2.0.0.2  and 1.5.0.10 update releases we fixed
several bugs to improve the stability of the product. Some of these were
crashes that showed evidence of memory corruption and we presume that
with enough effort at least some of these could be exploited to run
arbitrary code.Thunderbird shares the browser engine with Firefox
and could be vulnerable if JavaScript were to be enabled in
mail. This is not the default setting and we strongly discourage users from
running JavaScript in mail. Without further investigation we cannot rule out
the possibility that for some of these an attacker might be able to prepare
memory for exploitation through some means other than JavaScript, such as
large images.