Bug 1588688 (CVE-2016-1000340)

Summary:	CVE-2016-1000340 bouncycastle: Carry propagation bug in math.raw.Nat??? class
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	avibelli, bcourt, bgeorges, bkearney, bmaxwell, bmcclain, cbillett, cdewolf, chazlett, csutherl, darran.lofthouse, dblechte, dimitris, dosoudil, drieden, eedri, hhorak, jawilson, jbalunas, jjohnstn, jmatthew, jolee, jorton, jpallich, jschatte, jshepherd, jstastny, krathod, lgao, lthon, mgoldboi, michal.skrivanek, mmccune, mrike, mszynkie, myarboro, ohadlevy, pdrozd, pgallagh, pgier, psakar, pslavice, psotirop, puntogil, rchan, rgrunber, rnetuka, rruss, rsvoboda, sbonazzo, sherold, steve.traylen, sthorger, tomckay, trogers, tsanders, twalsh, vhalbert, vtunka, ykaul
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	bouncycastle 1.56	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:27:41 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1588689, 1588690, 1588691, 1589576, 1589577, 1592662
Bug Blocks:	1588310

Description Pedro Sampaio 2018-06-07 17:49:16 UTC

In the Bouncy Castle JCE Provider versions 1.51 to 1.55, a carry propagation bug was introduced in the implementation of squaring for several raw math classes have been fixed (org.bouncycastle.math.raw.Nat???). These classes are used by our custom elliptic curve implementations (org.bouncycastle.math.ec.custom.**), so there was the possibility of rare (in general usage) spurious calculations for elliptic curve scalar multiplications. Such errors would have been detected with high probability by the output validation for our scalar multipliers.

Upstream patch:

https://github.com/bcgit/bc-java/commit/790642084c4e0cadd47352054f868cc8397e2c00#diff-e5934feac8203ca0104ab291a3560a31

Comment 1 Pedro Sampaio 2018-06-07 17:51:14 UTC

Created bouncycastle tracking bugs for this issue:

Affects: epel-all [bug 1588689]
Affects: fedora-all [bug 1588691]

Comment 3 Mat Booth 2018-06-07 19:57:27 UTC

(In reply to Pedro Sampaio from comment #1)
> Affects: fedora-all [bug 1588691]

Fedora already carries bouncycastle newer than 1.56, so I will close this bug.

Comment 6 Kurt Seifried 2018-06-10 20:29:17 UTC

Statement:

This issue affects the versions of bouncycastle as shipped with Red Hat Subscription Asset Manager 1.x. Red Hat Product Security has rated this issue as having a security impact of Low. No update is planned for this product at this time. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

Comment 8 errata-xmlrpc 2018-09-11 07:56:58 UTC

This issue has been addressed in the following products:

  Red Hat JBoss Fuse

Via RHSA-2018:2669 https://access.redhat.com/errata/RHSA-2018:2669

Comment 9 errata-xmlrpc 2018-10-16 15:24:51 UTC

This issue has been addressed in the following products:

  Red Hat Satellite 6.4 for RHEL 7

Via RHSA-2018:2927 https://access.redhat.com/errata/RHSA-2018:2927

Comment 10 Joshua Padman 2019-05-15 22:52:06 UTC

This vulnerability is out of security support scope for the following product:
 * Red Hat JBoss Data Virtualization & Services 6

Please refer to https://access.redhat.com/support/policy/updates/jboss_notes for more details.