Bug 1588715 (CVE-2016-1000342)

Summary:	CVE-2016-1000342 bouncycastle: ECDSA improper validation of ASN.1 encoding of signature
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 10:27:49 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:	1588716, 1588717, 1588718, 1589582, 1589583, 1592662
Bug Blocks:	1588310

Description Pedro Sampaio 2018-06-07 18:27:08 UTC

In the Bouncy Castle JCE Provider version 1.55 and earlier ECDSA does not fully
validate ASN.1 encoding of signature on verification. It is possible to inject
extra elements in the sequence making up the signature and still have it
validate, which in some cases may allow the introduction of 'invisible' data
into a signed structure.

Upstream patch:

https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647#diff-25c3c78db788365f36839b3f2d3016b9

Comment 1 Pedro Sampaio 2018-06-07 18:28:12 UTC

Created bouncycastle tracking bugs for this issue:

Affects: epel-all [bug 1588718]
Affects: fedora-all [bug 1588717]

Comment 3 Mat Booth 2018-06-07 20:10:48 UTC

(In reply to Pedro Sampaio from comment #1)
> Affects: fedora-all [bug 1588717]

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

Comment 6 Kurt Seifried 2018-06-10 20:29:39 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 07:57:36 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 15:25:36 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 11 Joshua Padman 2019-05-15 22:41:27 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.