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<define-tag description>LTS security update</define-tag>
<define-tag moreinfo>
<p>Multiple vulnerabilities have been discovered in OpenSSL, a Secure
Sockets Layer toolkit.</p>
<ul>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2023-0464">CVE-2023-0464</a>
<p>David Benjamin reported a flaw related to the verification of
X.509 certificate chains that include policy constraints, which
may result in denial of service.</p></li>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2023-0465">CVE-2023-0465</a>
<p>David Benjamin reported that invalid certificate policies in leaf
certificates are silently ignored. A malicious CA could take
advantage of this flaw to deliberately assert invalid certificate
policies in order to circumvent policy checking on the certificate
altogether.</p></li>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2023-0466">CVE-2023-0466</a>
<p>David Benjamin discovered that the implementation of the
X509_VERIFY_PARAM_add0_policy() function does not enable the check
which allows certificates with invalid or incorrect policies to
pass the certificate verification (contrary to its documentation).</p></li>
<li><a href="https://security-tracker.debian.org/tracker/CVE-2023-2650">CVE-2023-2650</a>
<p>It was discovered that processing malformed ASN.1 object
identifiers or data may result in denial of service.</p></li>
</ul>
<p>For Debian 10 buster, these problems have been fixed in version
1.1.1n-0+deb10u5.</p>
<p>We recommend that you upgrade your openssl packages.</p>
<p>For the detailed security status of openssl please refer to
its security tracker page at:
<a href="https://security-tracker.debian.org/tracker/openssl">https://security-tracker.debian.org/tracker/openssl</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-3449.data"
# $Id: $
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