netdev - [iputils][ping] ip address resolution bug

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <CAKO=Kk5SA=KbWnnfzuzLY5pW9UX16zPuV_+Sv1P7LE7nezQzEg@mail.gmail.com>
Date:	Mon, 10 Jun 2013 00:52:45 +0200
From:	Quentin RAMEAU <quentin.rameau@...il.com>
To:	netdev@...r.kernel.org
Subject: [iputils][ping] ip address resolution bug

Ping does not ensure it is resolving a hostname to an IPv4 address.
i.e. when setting 'options inet6' in resolv.conf, gethostbyname(3)
returns an IPv6 address, but ping handles it as in IPv4 address.
I attached a simple patch which replaces gethostbyname() with
gethostbyname2(), I'm not sure that is the best way to do it, feel
free to comment.

Quentin Rameau

Download attachment "ping-address-resolution.diff" of type "application/octet-stream" (320 bytes)