The get_main_source_dir function in scripts/uscan.pl in devscripts before 2.13.8, when using USCAN_EXCLUSION, allows remote attackers to execute arbitrary commands via shell metacharacters in a directory name.
https://exchange.xforce.ibmcloud.com/vulnerabilities/89666
https://bugzilla.redhat.com/show_bug.cgi?id=1040266
http://www.securityfocus.com/bid/64241
http://seclists.org/oss-sec/2013/q4/486
http://seclists.org/oss-sec/2013/q4/470
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=731849
http://anonscm.debian.org/gitweb/?p=collab-maint/devscripts.git%3Ba=commitdiff%3Bh=91f05b5