Format string vulnerability in the grant helper (polkit-grant-helper.c) in PolicyKit 0.7 and earlier allows attackers to cause a denial of service (crash) and possibly execute arbitrary code via format strings in a password.
https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00176.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/41877
https://bugs.launchpad.net/ubuntu/+source/policykit/+bug/205037
http://www.vupen.com/english/advisories/2008/1254
http://www.securityfocus.com/bid/28702
http://www.mandriva.com/security/advisories?name=MDVSA-2008:087