PHPMailer command execution

2007.06.17
Credit: Thor Larholm
Risk: High
Local: No
Remote: Yes
CWE: CWE-Other


CVSS Base Score: 6.8/10
Impact Subscore: 6.4/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

PHPMailer is a widely deployed utility class used in PHP application to handle emails sent through sendmail, PHP mailto() or SMTP. It is used in PHP applications such as WordPress, Mantis, WebCalendar, Group-Office and Joomla. The last official release happened on July 11, 2005. If you have configured PHPMailer to use sendmail it has a remote command execution vulnerability due to a lack of input validation. sendmail is queried through the popen function which is called with a string constructed from non-escaped user input. http://larholm.com/2007/06/11/phpmailer-0day-remote-execution/ Cheers Thor Larholm


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