Bug 499862 (CVE-2009-1603)

Summary:	CVE-2009-1603 opensc: insecure public exponent in opensc 0.11.7
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jlieskov, tmraz
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-06-16 06:59:18 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:

Description Vincent Danen 2009-05-08 15:53:40 UTC

OpenSC 0.11.8 was released today [1] with a security fix for a flaw that only affects OpenSC 0.11.7, which is currently shipped in all suported versions of Fedora.

The vulnerability is with the pkcs11-tool which has the ability to ask the PKCS#11 module to generate an RSA key pair.  Due to a bug in the code, it uses a public exponent of 1, which is an invalid and insecure value, leading to messages encrypted with the RSA key to be unencrypted.  However, this problem only occurs when used with a third-party PKCS#11 module; the OpenSC PKCS#11 module ignores any public exponent passed to it.

To be affected by this issue, you need a combination of the following:

- a tool that starts a key generation with the public exponent set to 1 (an invalid value that creates an insecure RSA key)
- a PKCS#11 module that accepts this invalid public exponent and forwards it to the card
- a card that accepts the public exponent and generates the RSA key

[1] http://www.opensc-project.org/pipermail/opensc-announce/2009-May/000025.html

Comment 1 Fedora Update System 2009-05-11 12:12:41 UTC

opensc-0.11.8-1.fc10 has been submitted as an update for Fedora 10.
http://admin.fedoraproject.org/updates/opensc-0.11.8-1.fc10

Comment 2 Fedora Update System 2009-05-11 12:12:46 UTC

opensc-0.11.8-1.fc9 has been submitted as an update for Fedora 9.
http://admin.fedoraproject.org/updates/opensc-0.11.8-1.fc9

Comment 3 Fedora Update System 2009-05-11 12:12:50 UTC

opensc-0.11.8-1.fc11 has been submitted as an update for Fedora 11.
http://admin.fedoraproject.org/updates/opensc-0.11.8-1.fc11

Comment 4 Vincent Danen 2009-05-11 16:36:27 UTC

This has been assigned CVE-2009-1603.

Comment 5 Fedora Update System 2009-05-13 02:27:40 UTC

mingw32-opensc-0.11.8-1.fc11 has been submitted as an update for Fedora 11.
http://admin.fedoraproject.org/updates/mingw32-opensc-0.11.8-1.fc11

Comment 6 Fedora Update System 2009-05-13 02:27:49 UTC

mingw32-opensc-0.11.8-1.fc10 has been submitted as an update for Fedora 10.
http://admin.fedoraproject.org/updates/mingw32-opensc-0.11.8-1.fc10

Comment 7 Fedora Update System 2009-05-30 02:27:11 UTC

opensc-0.11.8-1.fc11 has been pushed to the Fedora 11 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2009-05-30 02:29:09 UTC

opensc-0.11.8-1.fc10 has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 Fedora Update System 2009-05-30 02:30:27 UTC

opensc-0.11.8-1.fc9 has been pushed to the Fedora 9 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 10 Fedora Update System 2009-06-02 14:36:14 UTC

mingw32-opensc-0.11.8-1.fc10 has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 11 Fedora Update System 2009-06-02 14:36:36 UTC

mingw32-opensc-0.11.8-1.fc11 has been pushed to the Fedora 11 stable repository.  If problems still persist, please make note of it in this bug report.