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<define-tag description>LTS security update</define-tag>
<define-tag moreinfo>
<p>Vulnerabilities were found in opensc, a set of libraries and utilities
to access smart cards, which could lead to application crash or
authentication bypass.</p>
<ul>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2023-40660">CVE-2023-40660</a>
<p>When the token/card was plugged into the computer and authenticated
from one process, it could be used to provide cryptographic
operations from different process when the empty, zero-length PIN
and the token can track the login status using some of its
internals. This is dangerous for OS logon/screen unlock and small
tokens that are plugged permanently to the computer.</p>
<p>The bypass was removed and explicit logout implemented for most of
the card drivers to prevent leaving unattended logged-in tokens.</p></li>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2023-40661">CVE-2023-40661</a>
<p>This advisory summarizes automatically reported issues from dynamic
analyzers reports in pkcs15-init that are security relevant.</p>
<p><ul>
<li>stack buffer overflow in <code>sc_pkcs15_get_lastupdate()</code> in pkcs15init;</li>
<li> heap buffer overflow in <code>setcos_create_key()</code> in pkcs15init;</li>
<li> heap buffer overflow in <code>cosm_new_file()</code> in pkcs15init;</li>
<li> stack buffer overflow in <code>cflex_delete_file()</code> in pkcs15init;</li>
<li> heap buffer overflow in <code>sc_hsm_write_ef()</code> in pkcs15init;</li>
<li> stack buffer overflow while parsing pkcs15 profile files;</li>
<li> stack buffer overflow in muscle driver in pkcs15init; and</li>
<li> stack buffer overflow in cardos driver in pkcs15init.</li>
</ul></p>
<p>All of these require physical access to the computer at the time
user or administrator would be enrolling the cards (generating keys
and loading certificates, other card/token management) operations.
The attack requires crafted USB device or smart card that would
present the system with specially crafted responses to the APDUs so
they are considered a high-complexity and low-severity. This issue
is not exploitable just by using a PKCS#11 module as done in most of
the end-user deployments.</p></li>
</ul>
<p>For Debian 10 buster, these problems have been fixed in version
0.19.0-1+deb10u3.</p>
<p>We recommend that you upgrade your opensc packages.</p>
<p>For the detailed security status of opensc please refer to
its security tracker page at:
<a href="https://security-tracker.debian.org/tracker/opensc">https://security-tracker.debian.org/tracker/opensc</a></p>
<p>Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: <a href="https://wiki.debian.org/LTS">https://wiki.debian.org/LTS</a></p>
</define-tag>
# do not modify the following line
#include "$(ENGLISHDIR)/lts/security/2023/dla-3668.data"
# $Id: $
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