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<a href="https://gitlab.com/dulanshuangqiao">dulanshuangqiao</a> created an issue: <a href="https://gitlab.com/gnutls/gnutls/-/issues/1596">#1596</a>
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<p dir="auto" style="color: #28272d; margin: 0;" align="initial">RFC5280 stipulates that the IP address in the name constraint extension of the X.509 certificate must contain a subnet mask. For the malformed subnet mask, gnutls_x509_crt_import correctly parses it. In contrast, Golang's x509.ParseCertificate throws an error: parsing x509: IP constraint contained invalid mask xxxxxxxx
I found this issue using gnutls-cli 3.7.3
See the attached test case
<a href="https://gitlab.com/-/project/179611/uploads/1eb475c4434a91c485f0d1dae5aece4a/Cert17290457531910.der" data-canonical-src="/uploads/1eb475c4434a91c485f0d1dae5aece4a/Cert17290457531910.der" data-link="true" class="gfm" style="margin-top: 0;">Cert17290457531910.der</a></p>
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