Multiple buffer overflows in XShisen allow attackers to execute arbitrary code via a long (1) -KCONV command line option or (2) XSHISENLIB environment variable.
https://exchange.xforce.ibmcloud.com/vulnerabilities/13359
https://exchange.xforce.ibmcloud.com/vulnerabilities/13358
http://www.vuxml.org/freebsd/56971fa6-641c-11d9-a097-000854d03344.html
http://www.securityfocus.com/bid/8776
http://www.securityfocus.com/bid/8770