This script is Copyright (C) 2012-2017 Tenable Network Security, Inc.
The remote Mac OS X host contains an email client that is potentially
affected by an integer overflow vulnerability.
The installed version of Thunderbird 3.1.x is earlier than 3.1.19 and
is, therefore, potentially affected by an integer overflow
vulnerability in libpng, a library used by this application. When
decompressing certain PNG image files, this could be exploited to
crash the application or even execute arbitrary code.
See also :
Upgrade to Thunderbird 3.1.19 or later.
Risk factor :
High / CVSS Base Score : 9.3
CVSS Temporal Score : 8.1
Public Exploit Available : false