Bug 86112 - New timing attack on OpenSSL applications
Summary: New timing attack on OpenSSL applications
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: openssl
Version: 8.0
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Nalin Dahyabhai
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2003-03-14 09:44 UTC by Mark J. Cox
Modified: 2007-04-18 16:52 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2003-04-15 11:32:24 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2003:101 0 normal SHIPPED_LIVE : Updated OpenSSL packages fix vulnerabilities 2003-04-01 05:00:00 UTC
Red Hat Product Errata RHSA-2003:205 0 normal SHIPPED_LIVE : Updated OpenSSL packages fix vulnerabilities 2003-06-23 04:00:00 UTC

Description Mark J. Cox 2003-03-14 09:44:43 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:


Note that enabling RSA blinding is not trivial

Comment 1 Mark J. Cox 2003-03-14 09:45:56 UTC
(also note that this issue was entered for OpenSSL under Red Hat Linux 8.0 but
applies to all applications linked to OpenSSL under Red Hat Linux 6.2, 7, 7.1,
7.2, 8.0 and the Enterprise Linux family.

Comment 2 Mark J. Cox 2003-03-17 09:36:20 UTC
This is CAN-2003-0147.  The OpenSSL team are currently working on a patch that
enables RSA blinding by default, therefore only OpenSSL will need to be updated
and applications linked to it will not.

Comment 3 Mark J. Cox 2003-04-15 11:32:24 UTC
Was fixed by http://rhn.redhat.com/errata/RHSA-2003-101.html

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