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<a href="https://gitlab.com/1784244538">One happy person</a> created an issue: <a href="https://gitlab.com/gnutls/gnutls/-/issues/1692">#1692</a>
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<h2 dir="auto" style="margin-top: 0; margin-bottom: 10px;" align="initial">
<a href="#description-of-problem" aria-hidden="true" class="anchor" id="user-content-description-of-problem" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Description of problem:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Hello Developer:
I have a CRL file where the authorityCertSerialNumber field in the AKI extension is set to 0. GnuTLS successfully parsed the authorityCertSerialNumber field without any errors. However, according to RFC5280, the authorityCertSerialNumber field stores the certificate serial number, which must be a positive integer.So, is this a bug?</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#version-of-gnutls-used" aria-hidden="true" class="anchor" id="user-content-version-of-gnutls-used" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Version of gnutls used:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">GnuTLS 3.8.9</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" 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; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Distributor of gnutls (e.g., Ubuntu, Fedora, RHEL)</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Ubuntu</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#how-reproducible" aria-hidden="true" class="anchor" id="user-content-how-reproducible" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>How reproducible:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">certtool --crl-info --inder --infile crl_aki_serial_0.der</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#actual-results" aria-hidden="true" class="anchor" id="user-content-actual-results" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Actual results:</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">The Gnutls successfully printed this CRL</p>
<h2 dir="auto" style="margin-top: 20px; margin-bottom: 10px;" align="initial">
<a href="#expected-results" aria-hidden="true" class="anchor" id="user-content-expected-results" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Expected results:</h2>
<p dir="auto" style="color: #3a383f; margin: 0;" align="initial">Test Case:
<a href="https://gitlab.com/-/project/179611/uploads/b498301c5ad585a8f570bbe3a3056648/crl_aki_serial_0.der" data-canonical-src="/uploads/b498301c5ad585a8f570bbe3a3056648/crl_aki_serial_0.der" data-link="true" class="gfm" style="margin-top: 0;">crl_aki_serial_0.der</a></p>
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