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<a href="https://gitlab.com/dulanshuangqiao">dulanshuangqiao</a> created an issue: <a href="https://gitlab.com/gnutls/gnutls/-/issues/1620">#1620</a>
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<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #18171d; margin: 0 0 16px;" align="initial">
<a href="#description-of-problem" aria-hidden="true" class="anchor" id="user-content-description-of-problem" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Description of problem:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 16px;" align="initial">Gnutls mistakenly validated a certificate that does not comply with RFC5280
RFC5280 stipulates: CAs conforming to this profile MUST always encode certificate validity dates through the year 2049 as UTCTime; certificate validity dates in 2050 or later MUST be encoded as GeneralizedTime.
Cryptography performs this check and treats the use case that does not conform to the format as a verification failure</p>
<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #18171d; margin: 24px 0 16px;" align="initial">
<a href="#version-of-gnutls-used" aria-hidden="true" class="anchor" id="user-content-version-of-gnutls-used" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Version of gnutls used:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 16px;" align="initial">gnutls-cli 3.7.3</p>
<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #18171d; margin: 24px 0 16px;" align="initial">
<a href="#distributor-of-gnutls-eg-ubuntu-fedora-rhel" aria-hidden="true" class="anchor" id="user-content-distributor-of-gnutls-eg-ubuntu-fedora-rhel" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Distributor of gnutls (e.g., Ubuntu, Fedora, RHEL)</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 16px;" align="initial">Ubuntu</p>
<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #18171d; margin: 24px 0 16px;" align="initial">
<a href="#how-reproducible" aria-hidden="true" class="anchor" id="user-content-how-reproducible" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>How reproducible:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 16px;" align="initial">Steps to Reproduce:</p>
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<li style="margin-top: 0; line-height: 1.6em; margin-left: 25px; padding-left: 3px;">certtool --verify --load-ca-certificate RootCA.pem --infile Cert17319380403.pem
<a href="https://gitlab.com/-/project/179611/uploads/4dbc367f07393cab83aa8dd566213647/validity.zip" data-canonical-src="/uploads/4dbc367f07393cab83aa8dd566213647/validity.zip" data-link="true" class="gfm" style="margin-top: 0;">validity.zip</a>
</li>
</ul>
<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #18171d; margin: 24px 0 16px;" align="initial">
<a href="#actual-results" aria-hidden="true" class="anchor" id="user-content-actual-results" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Actual results:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 16px;" align="initial">Chain verification output: Verified. The certificate is trusted.</p>
<h2 dir="auto" style="font-size: 1.5em; font-weight: 600; padding-bottom: .3em; border-bottom-width: 1px; border-bottom-color: #bfbfc3; border-bottom-style: solid; color: #18171d; margin: 24px 0 16px;" align="initial">
<a href="#expected-results" aria-hidden="true" class="anchor" id="user-content-expected-results" style="margin-top: 0; float: left; margin-left: -20px; text-decoration: none; outline: none;"></a>Expected results:</h2>
<p dir="auto" style="color: #3a383f; margin: 0;" align="initial">validation failed: validity dates between 1950 and 2049 must be UtcTime</p>
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