The dynamic linker (dyld) in Apple Mac OS X 10.4.7 allows local users to execute arbitrary code via an "improperly handled condition" that leads to use of "dangerous paths," probably related to an untrusted search path vulnerability.
https://exchange.xforce.ibmcloud.com/vulnerabilities/28141
http://www.vupen.com/english/advisories/2006/3101
http://www.us-cert.gov/cas/techalerts/TA06-214A.html
http://www.securityfocus.com/bid/19289
http://secunia.com/advisories/21253
http://lists.apple.com/archives/security-announce/2006//Aug/msg00000.html