[Snort-devel] [Snort-Devel] bug in http preprocessor and non ascii characters 2.8.6.1

matan monitz mmonitz at ...2499...
Wed Mar 16 17:43:27 EDT 2011


thank you, that helped
are there supposed to be any negative side effects to this option?

On Wed, Mar 16, 2011 at 7:23 PM, Bhagya Bantwal <bbantwal at ...402...>wrote:

>
> You can turn on extended_ascii_uri in http_inspect_server to handle non
> printable letters.
>
> -B
> On Wed, Mar 16, 2011 at 1:02 PM, matan monitz <mmonitz at ...2499...> wrote:
>
>> hello
>> i am encountering runaway uri buffers when inspecting packets with non
>> ascii characters in the uri
>> what basically happens is that for some reason if the uri contains non
>> printable letters (hebrew ansi from IE for instance) the uri buffer gets
>> filled with header data resulting in false positives
>> i haven't tested the buffers using the methods described in the recent
>> blog post but have tested it with custom rules and was able to recreate the
>> bug
>> is this a known bug or some configuration option i'm missing?
>>  i can post the test pcaps and rules if needed
>>
>>
>>
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