Bug 1276272 – CVE-2015-7940 bouncycastle: Invalid curve attack allowing to extract private keys

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Bug 1276272 - (CVE-2015-7940) CVE-2015-7940 bouncycastle: Invalid curve attack allowing to extract private keys

Summary:	CVE-2015-7940 bouncycastle: Invalid curve attack allowing to extract private ...

Status:	CLOSED NEXTRELEASE

Aliases:	CVE-2015-7940

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=20150914,repor...
Keywords:	Security

Depends On:	1277405 1277404
Blocks:	1276274 1379523 1381801
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Reported:	2015-10-29 06:15 EDT by Adam Mariš
Modified:	2016-10-06 12:44 EDT (History)
CC List:	17 users (show)

See Also:
Fixed In Version:	bouncycastle 1.51
Doc Type:	Bug Fix
Doc Text:	It was found that bouncycastle is vulnerable to an invalid curve attack. An attacker could extract private keys used in elliptic curve cryptography with a few thousand queries.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-05-16 19:29:50 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:2035	normal	SHIPPED_LIVE	Important: Red Hat JBoss Fuse 6.3 security update	2016-10-06 16:18:07 EDT
Red Hat Product Errata	RHSA-2016:2036	normal	SHIPPED_LIVE	Important: Red Hat JBoss A-MQ 6.3 security update	2016-10-06 16:18:02 EDT

Groups: None (edit)

Description Adam Mariš 2015-10-29 06:15:57 EDT

A vulnerability in bouncycastle implementation was found, allowing to perform invalid curve attack. The attack allows to extract private keys used in elliptic curve cryptography with a few thousand queries.

Upstream patches:

https://github.com/bcgit/bc-java/commit/5cb2f0578e6ec8f0d67e59d05d8c4704d8e05f83
https://github.com/bcgit/bc-java/commit/e25e94a046a6934819133886439984e2fecb2b04

CVE assignment:

http://seclists.org/oss-sec/2015/q4/131

Detailed info about the attack:

http://web-in-security.blogspot.ca/2015/09/practical-invalid-curve-attacks.html

Comment 1 gil cattaneo 2015-10-29 06:46:12 EDT

Seem affected only in Fedora 21 and 22 (1.50).
For Fedora 23 and 24 use bouncycastle 1.52.

Comment 2 Kurt Seifried 2015-10-29 20:43:13 EDT

Subscription Asset Manager and Satellite 6 both use Candlepin which in turn uses Bouncecastle for X.509 certificate handling. As such they are not really vulnerable to attack so changing to WONTFIX.

Comment 3 Adam Mariš 2015-11-03 04:23:57 EST

Created bouncycastle tracking bugs for this issue:

Affects: fedora-all [bug 1277404]
Affects: epel-all [bug 1277405]

Comment 4 Fedora Update System 2016-01-04 14:51:03 EST

bouncycastle-1.50-8.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.

Comment 5 Jason Shepherd 2016-05-16 19:28:58 EDT

Version 6.3 of Red Hat JBoss A-MQ, and Red Hat JBoss Fuse will upgrade to the JClouds and Bouncy Castle to an non-affected version 1.54

Comment 6 errata-xmlrpc 2016-10-06 12:18:43 EDT

This issue has been addressed in the following products:

  Red Hat JBoss A-MQ 6.3

Via RHSA-2016:2036 https://rhn.redhat.com/errata/RHSA-2016-2036.html

Comment 7 errata-xmlrpc 2016-10-06 12:19:27 EDT

This issue has been addressed in the following products:

  Red Hat JBoss Fuse 6.3

Via RHSA-2016:2035 https://rhn.redhat.com/errata/RHSA-2016-2035.html

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