[gentoo-announce] [ GLSA 200812-09 ] OpenSC: Insufficient protection of smart card PIN

[news 28]

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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 ( -at -) 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