[Oisf-users] TLS rule not matching certificate subject all the time

[Anoop Saldanha]

Are you using the latest master?  We had recently pushed a fix in our
tls parser.

On Thu, Nov 8, 2012 at 7:26 PM, Victor Julien <lists at inliniac.net> wrote:
> On 11/08/2012 02:46 PM, Matthew Keeler wrote:
>> Was using the autofp runmode. I will try with the workers run mode and see if it resolves anything.
>
> Can you reproduce it with a pcap file?
>
> Cheers,
> Victor
>
>>
>> Matt Keeler
>>
>> On Nov 7, 2012, at 5:19 PM, Eric Leblond <eric at regit.org> wrote:
>>
>>> Hello,
>>>
>>> Le mercredi 07 novembre 2012 à 16:53 -0500, Matthew Keeler a écrit :
>>>> I am experimenting with some Suricata rules and have a rule of the form
>>>>
>>>> "alert tls any any -> any any (msg: "Some message" tls.subject: "<the cert subject>"; sid:<sid> rev:1; )"
>>>>
>>>> I then run a curl command to reach out to an https enabled website with a certificate that has the same subject as the one in the rule. Sometimes I get the alert and sometimes I do not. It seems rather random when the alert is raised and when it is ignored.
>>>>
>>>> I have verified in Wireshark that the certificate is being sent every time.
>>>>
>>>> Is there a reason why Suricata would only occasionally find the certificate?
>>>
>>> No specific reason. One of the possibility is that there is some
>>> streaming errors. What is the running mode used ? Workers with flow base
>>> locad-balancing on top should provide good result and avoid this kind of
>>> problem.
>>>
>>>
>>> BR,
>>>
>>>>
>>>> Thanks
>>>> Matt Keeler--------------------------------------------------------------------
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>>>
>>>
>>
>> --------------------------------------------------------------------
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>>
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>>
>
>
> --
> ---------------------------------------------
> Victor Julien
> http://www.inliniac.net/
> PGP: http://www.inliniac.net/victorjulien.asc
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>
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-- 
Anoop Saldanha