CVE-2015-8476

Multiple CRLF injection vulnerabilities in PHPMailer before 5.2.14 allow attackers to inject arbitrary SMTP commands via CRLF sequences in an (1) email address to the validateAddress function in class.phpmailer.php or (2) SMTP command to the sendCommand function in class.smtp.php, a different vulnerability than CVE-2012-0796.

Multiple CRLF injection vulnerabilities in PHPMailer before 5.2.14 allow attackers to inject arbitrary SMTP commands via CRLF sequences in an (1) email address to the validateAddress function in class.phpmailer.php or (2) SMTP command to the sendCommand function in class.smtp.php, a different vulnerability than CVE-2012-0796.

Multiple CRLF injection vulnerabilities in PHPMailer before 5.2.14 allow attackers to inject arbitrary SMTP commands via CRLF sequences in an (1) email address to the validateAddress function in class.phpmailer.php or (2) SMTP command to the sendCommand function in class.smtp.php, a different vulnerability than CVE-2012-0796.

Impact

Attackers could inject arbitrary SMTP commands via by exploiting the fact that valid email addresses may contain line breaks, which are not handled correctly in some contexts.

Patches

Fixed in 5.2.14 in this commit.

Workarounds

Manually strip line breaks from email addresses before passing them to PHPMailer.

References

https://nvd.nist.gov/vuln/detail/CVE-2015-8476

For more information

If you have any questions or comments about this advisory:

• Open a private issue in the PHPMailer project

Multiple CRLF injection vulnerabilities in PHPMailer before 5.2.14 allow attackers to inject arbitrary SMTP commands via CRLF sequences in an (1) email address to the validateAddress function in class.phpmailer.php or (2) SMTP command to the sendCommand function in class.smtp.php, a different vulnerability than CVE-2012-0796.

Multiple CRLF injection vulnerabilities in PHPMailer before 5.2.14 allow attackers to inject arbitrary SMTP commands via CRLF sequences in an (1) email address to the validateAddress function in class.phpmailer.php or (2) SMTP command to the sendCommand function in class.smtp.php, a different vulnerability than CVE-2012-0796.

Impact

Attackers could inject arbitrary SMTP commands via by exploiting the fact that valid email addresses may contain line breaks, which are not handled correctly in some contexts.

Patches

Fixed in 5.2.14 in this commit.

Workarounds

Manually strip line breaks from email addresses before passing them to PHPMailer.

References

https://nvd.nist.gov/vuln/detail/CVE-2015-8476

For more information

If you have any questions or comments about this advisory:

• Open a private issue in the PHPMailer project

Updated php-phpmailer package fixes security vulnerability:

Takeshi Terada discovered that PHPMailer accepted addresses containing line breaks. This is valid in RFC5322, but allowing such addresses resulted in invalid RFC5321 SMTP commands, permitting a kind of message injection attack (CVE-2015-8476).

Multiple CRLF injection vulnerabilities in PHPMailer before 5.2.14 allow attackers to inject arbitrary SMTP commands via CRLF sequences in an (1) email address to the validateAddress function in class.phpmailer.php or (2) SMTP command to the sendCommand function in class.smtp.php, a different vulnerability than CVE-2012-0796.