Weak file permissions, insecure shared library loading, buffer overflow in different utilities.
vulners.com/securityvulns/securityvulns:doc:20292
vulners.com/securityvulns/securityvulns:doc:20293
vulners.com/securityvulns/securityvulns:doc:20294
vulners.com/securityvulns/securityvulns:doc:20308