Bug in IIS and PWS but only for Windows 9x. Re: Personal web

From: Victor Lavrenko (lavrenkoat_private)
Date: Wed Jan 20 1999 - 00:57:19 PST

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    >>>>> "Aleph" == Aleph One <aleph1at_private> writes:
    
    Hello everybody.
    
    This bug exists because Windows 9x has a nice feature. When you
    excecute "cd .." it goes to the parent directory, and "cd ..." goes to
    the parent directory of parent directory etc. Windows NT has no such
    feature so it isn't exploitable.
    
    IIS 4.0 and PWS 3.0 exploitable while executed under Windows 9x only,
    not Windows NT.
    
        Aleph> No:
    
        Aleph> Windows NT 4.0 SP3 ("kiborg" <contactat_private>) Windows
    [skip]
        Aleph> Windows 98 (Sean Coates scoatesat_private)
    
    Sean checked box with PWS 2.0. Due to another bug in its core, it
    seems that is not exploitable. PWS 3.0 doesn't have such bug so it is
    exploitable.
    
        Aleph> Yes:
    
        Aleph> Windows 95 ("kiborg" <contactat_private>) Windows 98
    [skip]
        Aleph> it open.
    
    PWS and IIS (they have the same core) check for ".." in URL, but don't
    check for "...", "...." etc.
    
    Summary:
    
    1. IIS 4.0 and PWS 3.0 exploitable under Windows 9x.
    2. IIS (any version) and PWS (any version) not exploitable under
       Windows NT.
    3. PWS 2.0 and (possibly) IIS 3.0 not exploitable under Windows 9x.
    
    --
    Victor Lavrenko
       Homepage:        http://www.lavrenko.pp.ru/
       E-mail:          lavrenkoat_private  lavrenkoat_private
       Fingerprint:     35 D0 98 8D 96 E5 F4 BA  59 FB 9D 29 92 26 F5 59
    



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