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.
Published 2010-01-29 18:30:01
Updated 2010-02-02 05:00:00
Source MITRE
View at NVD,
Vulnerability category: Information leak

Exploit prediction scoring system (EPSS) score for CVE-2009-4629

Probability of exploitation activity in the next 30 days EPSS Score History
~ 58 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2009-4629

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen

CWE ids for CVE-2009-4629

Vendor statements for CVE-2009-4629

  • Red Hat 2010-02-01
    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.

Products affected by CVE-2009-4629

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