The get_url function in DODS_Dispatch.pm for the CGI_server in OPeNDAP 3 allows remote attackers to execute arbitrary commands via shell metacharacters in a URL.
https://exchange.xforce.ibmcloud.com/vulnerabilities/33997
http://www.vupen.com/english/advisories/2007/1591
http://www.securitytracker.com/id?1017983
http://www.securityfocus.com/bid/23719
http://www.opendap.org/server3-patch-04.27.2007.txt