WinAc AND WinHKI ZIP File Directory Transversal

From: Rafel Ivgi, The-Insider (theinsider_at_012.net.il)
Date: 01/06/05

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To: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com, Windows NTBugtraq Mailing List <NTBUGTRAQ@LISTSERV.NTBUGTRAQ.COM>, vulnwatch@vulnwatch.org, news@securiteam.com, "securitytracker.com" <bugs@securitytracker.com>

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    Application: WinAce, WinHKI
    Vendors: http://www.webtoolmaster.com
    Versions: 1.4d
    Platforms: Windows
    Bug: ZIP File Directory Transversal
    Exploitation: Local (extract file)
    Date: 24 Dec 2004
    Author: Rafel Ivgi, The-Insider
    E-Mail: the_insider@mail.com
    Website: http://theinsider.deep-ice.com

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    1) Introduction
    2) Bugs
    3) The Code

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    ===============
    1) Introduction
    ===============

    WinHKI is a file archiever which supports: BH, CAB, HKI, JAR, LHA,TAR, GZ
    compressions.

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    ======
    2) Bug
    ======

    This is a normal ZIP compressed file header

    00000000 504B 0304 1400 0200 0800 CC81 0C2F B78F PK.........../..
    00000010 F209 3C2F 0F00 C8EE 0F00 0700 0000 7370 ..</..........sp
    00000020 352E 6578 65EC 5A7F 5454 577E 7F33 0C30 5.exe.Z.TTW~.3.0
    00000030 C0C0 1B94 8926 6A32 2AAE D9FC 206E 2628 .....&j2*... n&(
    00000040 2018 1186 4044 7D3A E40D 4940 4304 7CCC ...@D}:..I@C.|.

    in the following code, we can see how easy it is to change the path
    to anywhere we want, including the all users start up folder.
    I just overwrited the original long file name to /../../sp5.exe

    00000000 504B 0304 1400 0200 0800 CC81 0C2F B78F PK.........../..
    00000010 F209 3C2F 0F00 C8EE 0F00 1000 0000 7662 ..</..........vb
    00000020 2F2E 2E2F 2E2E 2F73 7035 2E65 7865 EC5A /../../sp5.exe.Z
    00000030 7F54 5457 7E7F 330C 30C0 C01B 9489 266A .TTW~.3.0.....&j
    00000040 322A AED9 FC20 6E26 2820 1811 8640 447D 2*... n&( ...@D}

    All we need to do is zip compress (using winzip, winrar, winace)
    a file with a long name/path and change the path specified inside the file
    to whatever we want Using any Hex editor such as HexWorkshop, just add
    anything to the filename.

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    ===========
    3) The Code
    ===========

    An online proof of concept can be found at:
    http://theinsider.web1000.com/WINACE-WINHKI ZIP TRANSVERSAL.zip

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

    ---
Rafel Ivgi, The-Insider
http://theinsider.deep-ice.com
"Scripts and Codes will make me D.O.S , but they will never HACK me."
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