Secunia Security Advisory - s.masugata has reported a vulnerability in PHP, which potentially can be exploited by malicious people to use it as an open mail relay.
72ffe905ab8069d300ec5f1d913c5d204d038fadccfe4e8ae7a6c7641abcc8c6
TITLE:
PHP "mb_send_mail()" "To:" Header Injection Vulnerability
SECUNIA ADVISORY ID:
SA17763
VERIFY ADVISORY:
http://secunia.com/advisories/17763/
CRITICAL:
Moderately critical
IMPACT:
Security Bypass, Manipulation of data
WHERE:
>From remote
SOFTWARE:
PHP 4.4.x
http://secunia.com/product/5768/
PHP 5.0.x
http://secunia.com/product/3919/
DESCRIPTION:
s.masugata has reported a vulnerability in PHP, which potentially can
be exploited by malicious people to use it as an open mail relay.
The vulnerability is caused due to an input validation error in the
"mb_send_mail()" function. This can be exploited to inject arbitrary
headers in a mail sent via a script calling the "mb_send_mail()"
function where the "To" parameter can be controlled by the attacker.
SOLUTION:
Update to version 5.1.0.
http://www.php.net/downloads.php
Do not call the "mb_send_mail()" function in scripts where input
passed to the "To" parameter originates from untrusted sources.
PROVIDED AND/OR DISCOVERED BY:
s.masugata
ORIGINAL ADVISORY:
The PHP Group:
http://www.php.net/release_5_1_0.php
s.masugata:
http://bugs.php.net/bug.php?id=35307
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