Bug 86206

Summary: New timing attack on OpenSSL applications
Product: Red Hat Enterprise Linux 2.1 Reporter: Mark J. Cox <mjc>
Component: opensslAssignee: Nalin Dahyabhai <nalin>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 2.1Keywords: Security
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OS: Linux   
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Last Closed: 2003-04-15 11:33:18 UTC Type: ---
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Description Mark J. Cox 2003-03-17 09:34:52 UTC 
Description of problem:

Timing attack on RSA decryption because RSA blinding isn't
used in all applications (mod_ssl etc)

Version-Release number of selected component (if applicable):

This affects most applications that link to OpenSSL

How reproducible:

In order to exploit this issue you need to be local to the machine or be on a
network that enables you to reliably observe sub 1ms timing differences.  

Additional info:

http://crypto.stanford.edu/~dabo/papers/ssl-timing.pdf

This is CAN-2003-0147

A patch is being prepared by the OpenSSL team that enabled RSA blinding by default.
Comment 1 Mark J. Cox 2003-04-15 11:33:18 UTC 
Was fixed by
http://rhn.redhat.com/errata/RHSA-2003-102.html