Bug 1304379 – CVE-2015-8804 nettle: miscalculations on secp384 curve

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Bug 1304379 - (CVE-2015-8804) CVE-2015-8804 nettle: miscalculations on secp384 curve

Summary:	CVE-2015-8804 nettle: miscalculations on secp384 curve

Status:	CLOSED ERRATA

Aliases:	CVE-2015-8804

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20160202,repor...
Keywords:	Security

Depends On:	1304308 1304304 1304305 1304306 1305766 1314374
Blocks:	1304384
	Show dependency tree / graph

Reported:	2016-02-03 07:54 EST by Andrej Nemec
Modified:	2016-11-04 04:30 EDT (History)
CC List:	8 users (show)

See Also:
Fixed In Version:	nettle 3.2
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-11-03 17:59:48 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Test case (1.85 KB, text/plain) 2016-02-09 02:55 EST, Tomas Hoger	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:2582	normal	SHIPPED_LIVE	Moderate: nettle security and bug fix update	2016-11-03 08:08:24 EDT

Groups: None (edit)

Description Andrej Nemec 2016-02-03 07:54:22 EST

A mistake in the computation of elliptic curve scalar multiplications was found in nettle.

External reference:

https://lists.lysator.liu.se/pipermail/nettle-bugs/2015/003024.html

Upstream fix:

https://git.lysator.liu.se/nettle/nettle/commit/fa269b6ad06dd13c901dbd84a12e52b918a09cd7

Comment 1 Andrej Nemec 2016-02-03 07:56:41 EST

CVE assignment:

http://seclists.org/oss-sec/2016/q1/273

As stated in the above-mentioned article, this issue only affects 64 bit x86 systems.

Comment 5 Tomas Hoger 2016-02-09 02:53:33 EST

Reporter's blog post:

https://blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html

Fixed upstream in nettle 3.2:

https://lists.gnu.org/archive/html/info-gnu/2016-01/msg00006.html

Comment 6 Tomas Hoger 2016-02-09 02:55 EST

Created attachment 1122347 [details]
Test case

Local copy of the test case that was posted to the upstream list:

https://lists.lysator.liu.se/pipermail/nettle-bugs/2015/003024.html

Comment 17 errata-xmlrpc 2016-11-03 15:31:05 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2582 https://rhn.redhat.com/errata/RHSA-2016-2582.html

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