MS99-027 - New IIS problem?

From: Jason (cisspstudyat_private)
Date: Sun Jul 07 2002 - 23:11:49 PDT

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    I was recently doing a penetration test and noticed a problem with the 
    SMTP component of their web server that allowed me to relay mail using an 
    old SMTP encapsulation problem.
    
    I traced it back to the MS bulletin MS99-027. This bulletin mentions 
    relaying problems with MS Exchange 5.5 IMS connector. It appears that this 
    same problem also occurs with the SMTP service that ships with IIS 4.
    
    The installation appears to be running SP6a, Security Post rollup service 
    pack and the latest patches up to MS02-018 (Q319733) that contains 
    cumulative patches for IIS, but this does not appear to fix the problem at 
    hand.
    
    What patch do I need to install to fix this problem? There is no mention 
    of an IIS patch in the MS99-027 bulletin. Was this originally thought to 
    not affect IIS?
    
    Jason
    
    
    
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