The Device Mapper multipathing driver (aka multipath-tools or device-mapper-multipath) 0.4.8, as used in SUSE openSUSE, SUSE Linux Enterprise Server (SLES), Fedora, and possibly other operating systems, uses world-writable permissions for the socket file (aka /var/run/multipathd.sock), which allows local users to send arbitrary commands to the multipath daemon.
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00236.html
https://www.redhat.com/archives/fedora-package-announce/2009-April/msg00231.html
http://www.vupen.com/english/advisories/2010/0528
http://www.debian.org/security/2009/dsa-1767
http://support.avaya.com/elmodocs2/security/ASA-2009-128.htm
http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00004.html
http://launchpad.net/bugs/cve/2009-0115
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10691