pimd 2.1.5 and possibly earlier versions allows user-assisted local users to overwrite arbitrary files via a symlink attack on (1) pimd.dump when a USR1 signal is sent, or (2) pimd.cache when USR2 is sent.
secunia.com/advisories/42759
secunia.com/advisories/42793
www.debian.org/security/2011/dsa-2147
www.openwall.com/lists/oss-security/2011/01/07/3
www.openwall.com/lists/oss-security/2011/01/07/4
www.osvdb.org/70305
www.securityfocus.com/bid/45715
www.vupen.com/english/advisories/2011/0113
exchange.xforce.ibmcloud.com/vulnerabilities/64528