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https://issues.apache.org/jira/browse/HTTPCLIENT-1319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebb updated HTTPCLIENT-1319:
-----------------------------
Description:
The IPV6 compressed format regex allows 0 or more hex groups before or after
the ::.
This does not detect too many groups (there should be at most 7 surrounding
groups in total).
It also allows no groups, i.e "::" which is not permitted AFAIK. [Edit: this is
allowed, see
The first issue could be detected by counting the number of ':' characters in
the string.
There should be no more than 7 colons.
The empty group could be detected by checking the length of the string - it
must be at least 3 characters.
That should probably be tested first as it is relatively cheap.
was:
The IPV6 compressed format regex allows 0 or more hex groups before or after
the ::.
This does not detect too many groups (there should be at most 7 surrounding
groups in total).
It also allows no groups, i.e "::" which is not permitted AFAIK.
The first issue could be detected by counting the number of ':' characters in
the string.
There should be no more than 7 colons.
The empty group could be detected by checking the length of the string - it
must be at least 3 characters.
That should probably be tested first as it is relatively cheap.
> InetAddressUtils.isIPv6HexCompressedAddress does not detect excess groups
> -------------------------------------------------------------------------
>
> Key: HTTPCLIENT-1319
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1319
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Affects Versions: 4.3 Alpha1
> Reporter: Sebb
> Priority: Minor
> Fix For: 4.3 Final
>
>
> The IPV6 compressed format regex allows 0 or more hex groups before or after
> the ::.
> This does not detect too many groups (there should be at most 7 surrounding
> groups in total).
> It also allows no groups, i.e "::" which is not permitted AFAIK. [Edit: this
> is allowed, see
> The first issue could be detected by counting the number of ':' characters in
> the string.
> There should be no more than 7 colons.
> The empty group could be detected by checking the length of the string - it
> must be at least 3 characters.
> That should probably be tested first as it is relatively cheap.
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