The Crowbar Ohai plugin (chef/cookbooks/ohai/files/default/plugins/crowbar.rb) in the Deployer Barclamp in Crowbar, possibly 1.4 and earlier, allows local users to execute arbitrary shell commands via vectors related to "insecure handling of tmp files" and predictable file names.
https://github.com/dellcloudedge/barclamp-deployer/pull/57
https://github.com/SUSE-Cloud/barclamp-deployer/commit/b6454268a067fc77ff5de82057b5b53b3cc38b87
https://github.com/SUSE-Cloud/barclamp-deployer/commit/5ea8d4ddaa4cb1ce834d36889f0fe7ac0d617bc8
https://exchange.xforce.ibmcloud.com/vulnerabilities/78041
https://euvd.enisa.europa.eu/vulnerability/EUVD-2012-3487
https://bugzilla.novell.com/show_bug.cgi?id=774967
http://www.securityfocus.com/bid/55240
http://www.openwall.com/lists/oss-security/2012/08/27/7
http://www.openwall.com/lists/oss-security/2012/08/27/5