Gentoo Linux Security Advisory GLSA 200812-09 - Smart cards formatted using OpenSC do not sufficiently protect the PIN, allowing attackers to reset it. 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. Versions less than 0.11.6 are affected.
c6ee2a4b61e4dbad6fbde8d1cdb450da973718cd1afa12d10b3c625df252fae9
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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@gentoo.org 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