Bug 1588708 (CVE-2016-1000341)

Summary:	CVE-2016-1000341 bouncycastle: Information exposure in DSA signature generation via timing attack
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
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 10:27:46 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:	1588709, 1588710, 1588711, 1589580, 1589581, 1592662
Bug Blocks:	1588310

Description Pedro Sampaio 2018-06-07 18:22:11 UTC

In the Bouncy Castle JCE Provider version 1.55 and earlier DSA signature
generation is vulnerable to timing attack. Where timings can be closely observed
for the generation of signatures, the lack of blinding in 1.55, or earlier, may
allow an attacker to gain information about the signature's k value and
ultimately the private value as well.

Upstream patch:

https://github.com/bcgit/bc-java/commit/acaac81f96fec91ab45bd0412beaf9c3acd8defa#diff-e75226a9ca49217a7276b29242ec59ce

Comment 1 Pedro Sampaio 2018-06-07 18:23:02 UTC

Created bouncycastle tracking bugs for this issue:

Affects: epel-all [bug 1588711]
Affects: fedora-all [bug 1588709]

Comment 3 Mat Booth 2018-06-07 20:07:06 UTC

(In reply to Pedro Sampaio from comment #1)
> Affects: fedora-all [bug 1588709]

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

Comment 6 Kurt Seifried 2018-06-10 20:29:28 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 Moderate. 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 07:57:14 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 15:25:12 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 22:52:28 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.