[org.apache.commons:commons-email] Improper Input Validation in Apache Commons Email

When a call-site passes a subject for an email that contains line-breaks in Apache Commons Email 1.0 through 1.4, the caller can add arbitrary SMTP headers.

References

• https://nvd.nist.gov/vuln/detail/CVE-2017-9801
• https://lists.apache.org/thread.html/7ef903a772a2ff08605df1be819044fb15df2815eb3d63878b3fbbb5@%3Cannounce.apache.org%3E
• http://www.securityfocus.com/bid/100082
• http://www.securitytracker.com/id/1039043
• https://github.com/advisories/GHSA-p7vm-phxx-g722