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Last updated: 8/29/2014 6:08:29 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2009-4629

Original release date: 01/29/2010
Last revised: 02/02/2010
Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:P/I:N/A:N) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information

Vendor Statements (disclaimer)

Official Statement from Red Hat (02/01/2010)
Not vulnerable. This issue did not affect the versions of Thunderbird as shipped with Red Hat Enterprise Linux 4 and 5, and Seamonkey as shipped with Red Hat Enterprise Linux 3 and 4.

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External Source: CONFIRM
Name: https://bugzilla.mozilla.org/show_bug.cgi?id=492196
External Source: MISC
Name: https://secure.grepular.com/DNS_Prefetch_Exposure_on_Thunderbird_and_Webmail

Technical Details

Vulnerability Type (View All)
  • Information Leak / Disclosure (CWE-200)