CVE-1999-1111: Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mech

Summary

Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack which directly modifies a pointer to a return address instead of using a buffer overflow to reach the return address entry itself.