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Category:   Device (Router/Bridge/Hub)  >   Juniper Junos Vendors:   Juniper
(Juniper Issues Fix for Juniper Junos) OpenSSL Montgomery Ladder Timing Lets Local Users Conduct Side-Channel Attacks to Obtain ECDSA Nonces
SecurityTracker Alert ID:  1033962
SecurityTracker URL:  http://securitytracker.com/id/1033962
CVE Reference:   CVE-2014-0076   (Links to External Site)
Date:  Oct 26 2015
Impact:   Disclosure of authentication information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in OpenSSL. A local user can obtain Elliptic Curve Digital Signature Algorithm (ECDSA) nonces. Juniper Junos is affected.

A local user can exploit a timing flaw in the Montgomery ladder implementation during swap operations to perform a FLUSH+RELOAD cache side-channel attack and potentially recover ECDSA nonces.

The original advisory is available at:

http://eprint.iacr.org/2014/140.pdf

Yuval Yarom and Naomi Benger reported this vulnerability.

Impact:   A local user can recover ECDSA nonces.
Solution:   Juniper has issued a fix for Juniper Junos.

Juniper has assigned PR 982853 to this vulnerability.

The Juniper advisory is available at:

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10629

Vendor URL:  kb.juniper.net/InfoCenter/index?page=content&id=JSA10629 (Links to External Site)
Cause:   Access control error, State error

Message History:   This archive entry is a follow-up to the message listed below.
Apr 8 2014 OpenSSL Montgomery Ladder Timing Lets Local Users Conduct Side-Channel Attacks to Obtain ECDSA Nonces



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