Re: TrendMicro Interscan VirusWall RegGo.dll BOf

From: Nobuo Miwa (n-miwaat_private)
Date: Tue May 29 2001 - 21:19:05 PDT

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    Hi,
    
    > This is a Buffer Overflow vulneravility in Trend Micro
    > InterScan VirusWall for NT 3.5.
    > RegGo.dll is the one.
    
    There is a same buffer overflow in VirusWall for Japanese.
    Any code with request will be executed remotely by "SYSTEM".
    I've reported it to Trend Micro Japan office and they've
    fixed within 24 hours and published a support news.
    
    Support news in Japanese:
    http://www.trendmicro.co.jp/support/news/news71.htm
    
    Users of ver.3.51J needs to replace RegGo.dll to fixed
    version that will be included in ver.3.52J
    Or allow accesss 80/TCP to only administrators.
    
    Fixed RegGo.dll download site:
    http://www.trendmicro.co.jp/esolution/solutionDetail.asp?solutionId=2694
    
    Here is a piece of test program..
    	for ( i=0 ; i<820 ; i++ )
    		sc[i] = 'a' ;
    	sc[i++] = 0x15 ;
    	sc[i++] = 0xAD ;
    	sc[i++] = 0xEE ;
    	sc[i++] = 0x77 ;
    	sc[i++] = 0xCC ;	// any code will be executed
    
    Our advisory:
    http://www.lac.co.jp/security/english/test/interscan.html
    
    
    Nobuo Miwa
    n-miwaat_private    ( @ @ )  http://www.lac.co.jp/security/
    ---------------o00o--(. .)--o00o---------------------------
    



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