Bug 1644356 (CVE-2018-0735) - CVE-2018-0735 openssl: timing side channel attack in the ECDSA signature generation
Summary: CVE-2018-0735 openssl: timing side channel attack in the ECDSA signature gene...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-0735
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1644357 1644358 1648185 1648767
Blocks: 1644372
TreeView+ depends on / blocked
 
Reported: 2018-10-30 15:46 UTC by Laura Pardo
Modified: 2019-11-06 00:51 UTC (History)
47 users (show)

Fixed In Version: openssl 1.1.0j, openssl 1.1.1a
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Clone Of:
Environment:
Last Closed: 2019-11-06 00:51:21 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:3700 0 None None None 2019-11-05 22:05:49 UTC

Description Laura Pardo 2018-10-30 15:46:18 UTC 
A flaw was found in OpenSSL versions from 1.1.0 through 1.1.0i inclusive and version 1.1.1. The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key.


References:
https://www.openssl.org/news/secadv/20181029.txt

Upstream Patch:
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=56fb454d281a023b3f950d969693553d3f3ceea1 
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=b1d6d55ece1c26fa2829e2b819b038d7b6d692b4
Comment 1 Laura Pardo 2018-10-30 15:46:46 UTC 
Created openssl tracking bugs for this issue:

Affects: fedora-all [bug 1644357]
Comment 6 errata-xmlrpc 2019-11-05 22:05:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3700 https://access.redhat.com/errata/RHSA-2019:3700
Comment 7 Product Security DevOps Team 2019-11-06 00:51:21 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-0735
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