CVE-2009-4629
SeaMonkey and Thunderbird - Unauthorized DNS Prefetching Exposure
Title source: llmDescription
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.
References (2)
Core 2
Core References
Various Sources x_refsource_misc
https://secure.grepular.com/DNS_Prefetch_Exposure_on_Thunderbird_and_Webmail
Issue Tracking x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=492196
Scores
EPSS
0.0093
EPSS Percentile
56.6%
Details
CWE
CWE-200
Status
published
Products (2)
mozilla/seamonkey
mozilla/thunderbird
3.0.1
Published
Jan 29, 2010
Tracked Since
Feb 18, 2026