The setFrom function in the Sendmail adapter in the zend-mail component before 2.4.11, 2.5.x, 2.6.x, and 2.7.x before 2.7.2, and Zend Framework before 2.4.11 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a " (backslash double quote) in a crafted e-mail address.
www.securityfocus.com/bid/95144
www.securitytracker.com/id/1037539
framework.zend.com/security/advisory/ZF2016-04
legalhackers.com/advisories/ZendFramework-Exploit-ZendMail-Remote-Code-Exec-CVE-2016-10034-Vuln.html
security.gentoo.org/glsa/201804-10
www.exploit-db.com/exploits/40979/
www.exploit-db.com/exploits/40986/
www.exploit-db.com/exploits/42221/