CVE-2009-4629 Information

Description

Mozilla Necko as used in Thunderbird 3.0.1 SeaMonkey and other applications performs DNS prefetching even when the app type is APP_TYPE_MAIL or APP_TYPE_EDITOR which makes it easier for remote attackers to determine the network location of the application’s user by logging DNS requests as demonstrated by DNS requests triggered by reading text/plain e-mail messages in Thunderbird.

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=492196 https://secure.grepular.com/DNS_Prefetch_Exposure_on_Thunderbird_and_Webmail