Sebb created HTTPCLIENT-1319:
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Summary: InetAddressUtils.isIPv6HexCompressedAddress does not
detect excess (or insufficient) 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
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.
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