Bug 86206 - New timing attack on OpenSSL applications
New timing attack on OpenSSL applications
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 2.1
Classification: Red Hat
Component: openssl (Show other bugs)
2.1
All Linux
medium Severity medium
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Assigned To: Nalin Dahyabhai
Brian Brock
: Security
Depends On:
Blocks:
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Reported: 2003-03-17 04:34 EST by Mark J. Cox (Product Security)
Modified: 2007-11-30 17:06 EST (History)
0 users

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Doc Type: Bug Fix
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Last Closed: 2003-04-15 07:33:18 EDT
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Description Mark J. Cox (Product Security) 2003-03-17 04:34:52 EST
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 (Product Security) 2003-04-15 07:33:18 EDT
Was fixed by
http://rhn.redhat.com/errata/RHSA-2003-102.html

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