Buffer overflow in unarj before 2.63a-r2 allows remote attackers to execute arbitrary code via an arj archive that contains long filenames.
https://exchange.xforce.ibmcloud.com/vulnerabilities/18044
http://www.securityfocus.com/bid/11665
http://www.redhat.com/support/errata/RHSA-2005-007.html
http://www.gentoo.org/security/en/glsa/glsa-200411-29.xml