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TITLE:
PHPMailer "Data()" Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA15543

VERIFY ADVISORY:
http://secunia.com/advisories/15543/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
PHPMailer 1.x
http://secunia.com/product/5177/

DESCRIPTION:
Mariano Nuņez Di Croce has reported a vulnerability in PHPMailer,
which can be exploited by malicious people to cause a DoS (Denial of
Service).

The vulnerability is caused due to an error in the processing of
overly long headers in the "Data()" function in "class.smtp.php".
This can be exploited to consume a large amount of CPU and memory
resources on a vulnerable server via an application using the
vulnerable mail library.

The vulnerability has been reported in version 1.7.2. Other versions
may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly verified.

PROVIDED AND/OR DISCOVERED BY:
Mariano Nuņez Di Croce, CYBSEC S.A.

ORIGINAL ADVISORY:
http://www.cybsec.com/vuln/PHPMailer-DOS.pdf

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About:
This Advisory was delivered by Secunia as a free service to help
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vulnerabilities.

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