PHP mb_send_mail() header parsing issue http://bugs.php.net/bug.php?id=35307 The mb_send_mail() function does not properly verify the "To" header when sending mail. This could allow an attacker to inject arbitrary headers into an outgoing mail message which could be used to relay spam. This issue also affects RHEL3 This issue also affects RHEL2.1
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2006-0276.html