[Snort-users] Suspicious hacker activity detected?

Arvid Van Essche arvid at ...16782...
Mon Apr 14 12:28:34 EDT 2014


Hi Teo,

Just a guess as you are using rpm files.
If you are using RedHat or a compatible OS like CentOS/Fedora. The epel
repository has a fixed package for the 1.0.1e to be backwards compatible

The heartbleed bug fixed starting from: openssl-1.0.1e-16.el6_5.7.x86_64

Don't forget to restart EVERY service that is using openssl to load the
latest version.

If possible scheduling a full security maintenance reboot is best to be
sure you don't miss a service like some VPN software. In most cases
management will approve it when you explain the consequences of Heartbleed.

Have fun fixing!

Best regards
Arvid Van Essche
Op 14-apr.-2014 18:04 schreef "Teo En Ming" <teo.en.ming at ...11827...>:

> I think downloading OpenSSL 1.0.1g, compiling and installing it will break
> OpenSSH. I prefer to install by RPM.
>
> Regards,
>
> Teo En Ming
>
>
> On Mon, Apr 14, 2014 at 11:45 PM, Nicholas Mavis (nmavis) <
> nmavis at ...589...> wrote:
>
>>  You can download OpenSSL 1.0.1g and compile it.
>>
>>  Nick
>>
>>   From: Teo En Ming <teo.en.ming at ...11827...>
>> Date: Monday, April 14, 2014 at 11:40 AM
>> To: nmavis <nmavis at ...589...>
>> Cc: Snort Users <snort-users at lists.sourceforge.net>, Teo En Ming <
>> teo.en.ming at ...11827...>
>> Subject: Re: [Snort-users] Suspicious hacker activity detected?
>>
>>
>>  Dear Nicholas Mavis,
>>
>> I have patched openssl on Centos 6.5 x86_64. However, I cannot patch
>> openssl on my RHEL 7 Beta because I don't have a Red Hat Network
>> subscription. What do you think can be done?
>>
>>  Thank you.
>>
>>  Regards,
>>
>> Teo En Ming
>>
>>
>> On Mon, Apr 14, 2014 at 11:13 PM, Nicholas Mavis (nmavis) <
>> nmavis at ...589...> wrote:
>>
>>>  Yes, this is a sign and it also looks like you are vulnerable.
>>>
>>>  Nick
>>>
>>>   From: Teo En Ming <teo.en.ming at ...11827...>
>>> Date: Monday, April 14, 2014 at 11:06 AM
>>> To: Snort Users <snort-users at lists.sourceforge.net>
>>> Subject: [Snort-users] Suspicious hacker activity detected?
>>>
>>>    Hi,
>>>
>>>  My HTTPS web server, POP3S and IMAPS ports were probed for the OpenSSL
>>> heartbleed vulnerability without my knowledge and authorization. Is it a
>>> sign of hacker activity? Please look at the Snort alerts below.
>>>
>>> [root at ...274... snort]# grep heartbeat snort.fast | grep -v 161.69.31.4
>>> 04/14-04:34:45.168194  [**] [1:30516:6] SERVER-OTHER TLSv1.1 large
>>> heartbeat response - possible ssl heartbleed attempt [**] [Classification:
>>> Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.146:443 ->
>>> 185.35.61.19:41201
>>> 04/14-09:31:58.763823  [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 183.60.243.189:46524 -> 192.168.1.147:993
>>> 04/14-09:31:58.764609  [**] [1:30516:6] SERVER-OTHER TLSv1.1 large
>>> heartbeat response - possible ssl heartbleed attempt [**] [Classification:
>>> Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.147:993 ->
>>> 183.60.243.189:46524
>>> 04/14-09:31:59.025988  [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 183.60.243.189:46524 -> 192.168.1.147:993
>>> 04/14-09:36:47.578766  [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 183.60.244.46:55346 -> 192.168.1.147:995
>>> 04/14-09:36:47.579841  [**] [1:30516:6] SERVER-OTHER TLSv1.1 large
>>> heartbeat response - possible ssl heartbleed attempt [**] [Classification:
>>> Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.147:995 ->
>>> 183.60.244.46:55346
>>> 04/14-09:36:47.775693  [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 183.60.244.46:55346 -> 192.168.1.147:995
>>> 04/14-09:36:47.775693  [**] [1:30512:5] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 183.60.244.46:55346 -> 192.168.1.147:995
>>> 04/14-10:13:25.031989  [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 101.226.19.76:31223 -> 192.168.1.146:443
>>> 04/14-10:13:25.032841  [**] [1:30516:6] SERVER-OTHER TLSv1.1 large
>>> heartbeat response - possible ssl heartbleed attempt [**] [Classification:
>>> Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.146:443 ->
>>> 101.226.19.76:31223
>>> 04/14-10:13:25.262897  [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 101.226.19.76:31223 -> 192.168.1.146:443
>>> 04/14-10:13:25.262897  [**] [1:30512:5] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 101.226.19.76:31223 -> 192.168.1.146:443
>>> 04/14-11:51:26.034725  [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 180.153.198.190:25521 -> 192.168.1.147:993
>>> 04/14-11:51:26.035167  [**] [1:30516:6] SERVER-OTHER TLSv1.1 large
>>> heartbeat response - possible ssl heartbleed attempt [**] [Classification:
>>> Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.147:993 ->
>>> 180.153.198.190:25521
>>> 04/14-11:51:26.232356  [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 180.153.198.190:25521 -> 192.168.1.147:993
>>> 04/14-11:51:26.232356  [**] [1:30512:5] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 180.153.198.190:25521 -> 192.168.1.147:993
>>> 04/14-12:01:46.374268  [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 180.153.198.219:50214 -> 192.168.1.147:995
>>> 04/14-12:01:46.375062  [**] [1:30516:6] SERVER-OTHER TLSv1.1 large
>>> heartbeat response - possible ssl heartbleed attempt [**] [Classification:
>>> Attempted Information Leak] [Priority: 2] {TCP} 192.168.1.147:995 ->
>>> 180.153.198.219:50214
>>> 04/14-12:01:46.597640  [**] [1:30524:1] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 180.153.198.219:50214 -> 192.168.1.147:995
>>> 04/14-12:01:46.597640  [**] [1:30512:5] SERVER-OTHER OpenSSL TLSv1.1
>>> heartbeat read overrun attempt [**] [Classification: Attempted Information
>>> Leak] [Priority: 2] {TCP} 180.153.198.219:50214 -> 192.168.1.147:995
>>>
>>>  Yours sincerely,
>>>
>>>  Teo En Ming
>>>
>>
>>
>
>
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