Bug 1449146

Summary:	wget: switch to libidn2
Product:	[Fedora] Fedora	Reporter:	Nikos Mavrogiannopoulos <nmavrogi>
Component:	wget	Assignee:	Tomáš Hozza <thozza>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	micah, thozza
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Last Closed:	2017-05-12 14:00:17 UTC	Type:	Bug
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Bug Blocks:	1439723

Description Nikos Mavrogiannopoulos 2017-05-09 09:44:00 UTC

Description of problem:
Internationalized domain names exist for quite some time (IDNA2003), although the protocols describing them have evolved in an incompatible way (IDNA2008). These incompatibilities will prevent applications written for IDNA2003 to access certain problematic domain names defined with IDNA2008, e.g., faß.de is translated to domain xn--fa-hia.de with IDNA2008, while in IDNA2003 it is translated to fass.de domain. That not only causes incompatibility problems, but may be used as an attack vector to redirect users to different web sites.

The change is about deprecating libidn, which supports IDNA2003, and switch all applications using libidn, to libidn2 2.0.0, which supports IDNA2008. The switch should be transparent as the libidn2 library is API compatible. See instructions at:
https://libidn.gitlab.io/libidn2/manual/libidn2.html#Converting-from-libidn


This is part of the IDNA2008 change:
https://fedoraproject.org/wiki/Changes/IDNA2008

If upstream is not aware of that change please involve them on the process.

Comment 1 Tomáš Hozza 2017-05-12 14:00:17 UTC

wget is already compiled with libidn2 in F26+ (since wget-1.19-1.fc26)