Integer overflow in the duplication operator in ActivePerl allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large multiplier, which may trigger a buffer overflow.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16224
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-2278
http://www.securityfocus.com/bid/10380
http://archives.neohapsis.com/archives/fulldisclosure/2004-05/0878.html