效绵县 Introduction Since the standard C library,libe,is loaded in nearly every Unix program,and since it contains routines of the sort that are useful for an attacker (e.g.,wrappers for system calls),it is libc that is the usual target,and such attacks are therefore known as return into-libc attacks.But in principle any available code,either from the program's text segment or from a library it links to, could be used 2023/2/7 42023/2/7 4 Introduction Since the standard C library, libc, is loaded in nearly every Unix program, and since it contains routines of the sort that are useful for an attacker (e.g., wrappers for system calls), it is libc that is the usual target, and such attacks are therefore known as return into-libc attacks. But in principle any available code, either from the program's text segment or from a library it links to, could be used