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https://issues.apache.org/jira/browse/TS-4480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15316751#comment-15316751
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Michael Sokolnicki commented on TS-4480:
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How would wildcards be handled then? I guess having a seperate index for that
would work, although I don't see how it could handle the wildcards within a
word (like b*z.example.net, as explained in the third subsection). But those
cases are not even handled by the current implementation, and they may be rare
enough to ignore.
> Wildcards in certificates should only match one level
> -----------------------------------------------------
>
> Key: TS-4480
> URL: https://issues.apache.org/jira/browse/TS-4480
> Project: Traffic Server
> Issue Type: Bug
> Components: Core, SSL
> Reporter: Michael Sokolnicki
> Fix For: 7.0.0
>
> Attachments: current_patch.diff
>
>
> According to RFC 6125 section 6.4.3:
> {quote}
> If the wildcard character is the only character of the left-most label in the
> presented identifier, the client SHOULD NOT compare against anything but the
> left-most label of the reference identifier (e.g., *.example.com would match
> foo.example.com but not bar.foo.example.com or example.com).
> {quote}
> In the current implementation, certificates are searched for in a trie, and
> the longest match is returned, but there is no check if that match complies
> with the above rule. This causes invalid certs to be returned and SLL errors
> in the browser (in Firefox, we get SSL_ERROR_BAD_CERT_DOMAIN).
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