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From: Aramis Orlando (aramiseasynet.ro)
Date: Fri Feb 15 2002 - 20:02:53 CST

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    ('binary' encoding is not supported, stored as-is) ======================================
    ====
    = VI Overflow Tested in RedHat 7.0/7.1/7.2 =
    =----------------------------------------=
    = Author: Andrew Tofan =
    =----------------------------------------=
    = Email: aramiseasynet.ro =
    =----------------------------------------=
    ======================================
    ====


    I've found a problem in vi
    , which is located in /bin/vi".
    Here are some tests I've made in << VIM version
    5.7.8>>.

    Take a look at my test:

    [rootsoftly /root]# vi -t "`perl -e 'printf "A"x9000'`"
    [rootsoftly /root]# gdb vi core
    gdb output:
    ==========

    Program terminated with signal 11, Segmentation
    fault.
    Reading symbols from /lib/libtermcap.so.2...(no
    debugging symbols found)...done.
    Loaded symbols for /lib/libtermcap.so.2
    Reading symbols from /lib/libc.so.6...done.
    Loaded symbols for /lib/libc.so.6
    Reading symbols from /lib/ld-linux.so.2...done.
    Loaded symbols for /lib/ld-linux.so.2
    Reading symbols from /lib/libnss_files.so.2...done.
    Loaded symbols for /lib/libnss_files.so.2
    #0 0x80644a7 in strcpy ()
    at ../sysdeps/generic/strcpy.c:31
    31 ../sysdeps/generic/strcpy.c: No such file or
    directory.

    then take a look at the registers:
    ====================================
    (gdb) info registers
    eax 0x41414141 1094795585
    ecx 0x41414141 1094795585
    edx 0x1 1
    ebx 0x1 1
    esp 0xbfffd1c4 0xbfffd1c4
    ebp 0xbfffd1dc 0xbfffd1dc
    esi 0x41414141 1094795585
    edi 0x0 0
    eip 0x80644a7 0x80644a7
    eflags 0x10206 66054
    cs 0x23 35
    ss 0x2b 43
    ds 0x2b 43
    es 0x2b 43
    fs 0x2b 43
    gs 0x2b 43
    fctrl 0x0 0
    fstat 0x0 0
    ftag 0x0 0
    fiseg 0x0 0
    fioff 0x0 0
    foseg 0x0 0
    fooff 0x0 0
    fop 0x0 0
    I did't waste my time writing an exploit becouse this:
    -rwxr-xr-x 1 root root 361852 Aug 7
    2000 /bin/vi

    --==Aramis==--