On Fri, 14 Jan 2022 11:18:23 GMT, Masanori Yano <my...@openjdk.org> wrote:

>> Could you please review the JDK-8255739 bug fix?
>> 
>> I think sun.security.x509.SubjectAlternativeNameExtension() should throw an 
>> exception for incorrect SubjectAlternativeNames instead of returning the 
>> substituted characters, which is explained in the description of BugDB.
>> 
>> I modified DerValue.readStringInternal() not to read incorrect 
>> SubjectAlternativeNames and throw an IOException. 
>> sun.security.x509.X509CertInfo.parse() catch the IOExcepton and ignore it if 
>> SAN is a non-ciritical extension like the behavior of the IOException in 
>> readStringInternal(). So I added a test with -Djava.security.debug=x509 to 
>> confirm that.
>
> Masanori Yano has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   8255739: x509Certificate returns � for invalid subjectAlternativeNames

Thank you for discussing this with many comments.

I understood that the fix is risky, requires additional matching checks, and is 
preferable to be selectable by a parameter.
I would like to consider them, but it will take a little time to reflect them 
in the change.

-------------

PR: https://git.openjdk.java.net/jdk/pull/6928

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