Open Stack

From: Ryan Ware [mailto:ryan.r.ware at intel.com]
Sent: Tuesday, April 08, 2014 7:11 AM
To: OTC ALL
Subject: OpenSSL Heartblead (CVE-2014-0160)

I wanted to take a moment and make sure everyone knows about this critical security vulnerability.  While system administrators in OTC (and outside) already know about this, I also know that people have many side projects and personal infrastructure as well.

The comment with the OpenSSL patch that fixes this issue can be found here (https://www.openssl.org/news/secadv_20140407.txt) but since it's short I'll reproduce it as well:


OpenSSL Security Advisory [07 Apr 2014]

========================================



TLS heartbeat read overrun (CVE-2014-0160)

==========================================



A missing bounds check in the handling of the TLS heartbeat extension can be

used to reveal up to 64k of memory to a connected client or server.



Only 1.0.1 and 1.0.2-beta releases of OpenSSL are affected including

1.0.1f and 1.0.2-beta1.



Thanks for Neel Mehta of Google Security for discovering this bug and to

Adam Langley <agl at chromium.org<mailto:agl at chromium.org>> and Bodo Moeller <bmoeller at acm.org<mailto:bmoeller at acm.org>> for

preparing the fix.



Affected users should upgrade to OpenSSL 1.0.1g. Users unable to immediately

upgrade can alternatively recompile OpenSSL with -DOPENSSL_NO_HEARTBEATS.



1.0.2 will be fixed in 1.0.2-beta2.

Note that it is remotely exploitable and you will not find anything in your logs indicating you were attacked.  If you were previously attacked, it is very possible that private keys, passwords or anything else in the server process' memory space could have been leaked so you probably have more remediation to do (generate new keys, passwords, etc.) than just patch.

There is a decent article here (http://arstechnica.com/security/2014/04/critical-crypto-bug-in-openssl-opens-two-thirds-of-the-web-to-eavesdropping/) with more info.  There is also known exploit code in the wild such as here (http://s3.jspenguin.org/ssltest.py).  There is also more information here (http://heartbleed.com/).

Please take this vulnerability seriously.  This is the most significant CVE I've seen in a long time.

Ryan
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