[openssl-dev] Openssl Poodle Vulnerability Clarification

Joey Yandle dragon at dancingdragon.be
Wed Jun 24 21:21:42 UTC 2015


The config script takes no-ssl2 and no-ssl3 args:

./config no-ssl2 no-ssl3 ...


On 06/24/2015 11:57 AM, Kannan Narayanasamy -X (kannanar - HCL 
TECHNOLOGIES LIMITED at Cisco) wrote:
> Hi Kurt,
>
> Thanks for the details. Syslog process is based on Java and disabling SSLv3 is not possible with that. We have tried to compile openssl with SSLv3 disabled but it didn't help. Can you share the steps if you have to disable via openssl compilation.
>
> Thanks,
> Kannan Narayanasamy.
>
>
> -----Original Message-----
> From: openssl-dev [mailto:openssl-dev-bounces at openssl.org] On Behalf Of Kurt Roeckx
> Sent: Friday, June 12, 2015 3:37 AM
> To: openssl-dev at openssl.org
> Subject: Re: [openssl-dev] Openssl Poodle Vulnerability Clarification
>
> On Thu, Jun 11, 2015 at 09:43:24PM +0000, Kannan Narayanasamy -X (kannanar - HCL TECHNOLOGIES LIMITED at Cisco) wrote:
>> Hi All,
>>
>> To resolve openSSL POODLE vulnerability we need to disable the SSLv3. In our application we have using openSSL through Apache. We have disabled using the below lines.
>>
>> SSLProtocol all -SSLv2 -SSLv3
>>
>> We are using 443 as SSL port. The command openssl s_client -connect <IPAddress>:443 -ssl3 shows the handshake failure message for 443 port. But for the ports 3333 and 4444 is connecting using SSLv3. The scanner as well report the high severity risk for those ports. In our application we are using those ports for syslog related tasks. If we change the port some other, then the scanner shows the new port in the list.
>>
>> How to disable the SSLv3 connection for those ports as well since may customers are waiting for the fix. Your suggestion is much appreciated.
>
> There are 2 solutions:
> - Change the configuration of syslog to disable SSLv3.  Not sure
>    it can actually be configured.
> - Build your openssl with SSLv3 disabled.
>
>
> Kurt
>
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