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New OpenSSL Flaw Exposes SSL To Man-In-The-Middle Attack
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Eamon_Walsh1
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Eamon_Walsh1,
User Rank: Apprentice
12/22/2014 | 12:14:44 PM
Re: A serious threat
Given the abundance of DOS attacks on financial verticals, POS and a renewed vigor of ransomware, it does seem like exploiting Heartbleed (or even Poodle, for that matter) is a secondary concern as opposed to the former coterie here. bit.ly/1uNXuNY
securityaffairs
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securityaffairs,
User Rank: Ninja
6/19/2014 | 2:11:01 AM
Re: A serious threat
Well, I totally agree with you. Heartbleed is more difficult to exploit and anyway the effect of a MITM attack is even more serious. The approach you propose is the correct one.

Regards

Pierluigi
Carrdev
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Carrdev,
User Rank: Apprentice
6/18/2014 | 6:20:44 PM
Re: A serious threat
Yes sir, I agree, it is not as bad as heartbleed.  However, a man in the middle attack is much easier to take advantage of than a heartbleed attack.  The heartbleed attack would allow an attacker to gain access to information stored in memory.  You can then take this information and parse it out and come up with something useful in most cases, most likely allowing you to hijack a user's session or get their credentials at least.

 

The man in the middle attack is a problem because of script kiddies.  It is much simpler to implement.  You can download a kit that will walk you through hijacking a session via what version of SSL a server is using and what vulnerabilities are available for that version.  

 

I believe it is best to rebuild any way.  Why not be safe?  I work at an enterprise support company, we rebuild openssl and other native libraries built using the insecure openssl builds.  Contact me if you would like more information, or if you would like to learn FOR FREE, how to patch your ssl/apache/tomcat or anything else.   I am always happy to help.  My blog is at carrdevelopers.com
securityaffairs
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securityaffairs,
User Rank: Ninja
6/6/2014 | 9:09:34 AM
Re: OH COME ON!!!
Let me share my last post on the topic where I resume all the recent cases

 

Vulnerabilities in OpenSSL and GnuTLS: An Earthquake in Internet Encryption
http://resources.infosecinstitute.com/vulnerabilities-openssl-gnutls-earthquake-internet-encryption/
#securityaffairs #OperSSL #encryption #SSL
securityaffairs
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securityaffairs,
User Rank: Ninja
6/6/2014 | 3:48:44 AM
Re: A serious threat
Yes OpenSSL is flawed again and probably the flaws are existent since its origin.

Resuming we have for OpenSSL

Hearbleed bug + 6 new vulnerabilities (at least one of them considered critical) that allow MiTM attacks, DoS and remote code execution.

for the GnuTLS implementation it ha s been discovered the Hello vulnerability considered as critical.

None of the above flaws are comparable to the impact of Heatbleed anyway they are critical and represent a serious menace for Internet encryption and affect cyphered communications over unsecure channels.

Patch/updade your system asap, before someone could exploit the flaws.

 

 
JCHANDLER840
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JCHANDLER840,
User Rank: Apprentice
6/5/2014 | 4:40:55 PM
Re: A serious threat
Great point, Kelly. I think with more people analyzing OpenSSL, we'll see it get stronger over time. Also, none of today's reported vulnerabiliies involved digital certificates or private keys. With patches available, server remedies can be applied now. This certainly is not Heartbleed. I like the optimism. Thanks for adding some perspective.
Thomas Claburn
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Thomas Claburn,
User Rank: Ninja
6/5/2014 | 3:37:28 PM
Re: A serious threat
If I'm not mistaken, OpenSSL got some full-time developers through funding from affected organizations in the wake of Heartbleed.
Sara Peters
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Sara Peters,
User Rank: Author
6/5/2014 | 1:15:39 PM
OH COME ON!!!
Really? Another SSL vulnerabiliity?! Ugh. I'm so sick of SSL.
Kelly Jackson Higgins
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Kelly Jackson Higgins,
User Rank: Strategist
6/5/2014 | 11:41:29 AM
Re: A serious threat
The good news here--if there is some--is that researchers are now looking more closely at OpenSSL. That ideally should lead to better code, and thus more secure encryption software. #optimism
securityaffairs
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50%
securityaffairs,
User Rank: Ninja
6/5/2014 | 11:38:50 AM
A serious threat
It is another serious issue that is threatening encryption over unsecure channel. Fortunately the principal consortiums have immediately released the necessary patch. It is fundamental to spread the news.

for the readers let me resume the situation

Heartbleed bug is related to the OpenSSL library, affects both server and clients.

The GnuTLS Hello flaw affects GnuTLS implementation and in the attack scenarios malicious servers are used to exploit the flaw in the client.

 

Impact of Heartbleed is wider thanks GnuTLS 

 

Stay sharp!


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