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