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Date:      Sun, 17 Dec 2017 15:01:11 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-standards@FreeBSD.org
Subject:   [Bug 224403] getaddrinfo() resolves "127.0.0.1 www.example.com" to 127.0.0.1
Message-ID:  <bug-224403-15@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D224403

            Bug ID: 224403
           Summary: getaddrinfo() resolves "127.0.0.1 www.example.com" to
                    127.0.0.1
           Product: Base System
           Version: 11.1-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: standards
          Assignee: freebsd-standards@FreeBSD.org
          Reporter: freebsd-bugzilla@michael-kaufmann.ch

Created attachment 188913
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D188913&action=
=3Dedit
Test program for getaddrinfo()

getaddrinfo() uses inet_aton(), which ignores trailing spaces after numeric=
al
IP addresses. This means that getaddrinfo() resolves the hostname "127.0.0.1
www.example.com" to the IP address 127.0.0.1.

Please see the attached example program.

This bug is also present in some other operating systems, please see
https://github.com/curl/curl/pull/2073

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