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Gentoo Linux Security Advisory GLSA 200812-09
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http://security.gentoo.org/
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Severity: Normal
Title: OpenSC: Insufficient protection of smart card PIN
Date: December 10, 2008
Bugs: #233543
ID: 200812-09
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Synopsis
========
Smart cards formatted using OpenSC do not sufficiently protect the PIN,
allowing attackers to reset it.
Background
==========
OpenSC is a smart card application that allows reading and writing via
PKCS#11.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/opensc < 0.11.6 >= 0.11.6
Description
===========
Chaskiel M Grundman reported that OpenSC uses weak permissions (ADMIN
file control information of 00) for the 5015 directory on smart cards
and USB crypto tokens running Siemens CardOS M4.
Impact
======
A physically proximate attacker can exploit this vulnerability to
change the PIN on a smart card and use it for authentication, leading
to privilege escalation.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All OpenSC users should upgrade to the latest version, and then check
and update their smart cards:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/opensc-0.11.6"
# pkcs15-tool --test-update
# pkcs15-tool --test-update --update
References
==========
[ 1 ] CVE-2008-2235
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2235
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200812-09.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2008 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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