[Bug 3979] udhcpc should filter out malicious hostnames passed in option 0x0c

Thu Dec 8 15:40:37 UTC 2011

https://bugs.busybox.net/show_bug.cgi?id=3979

Denys Vlasenko <vda.linux at googlemail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #3842|0                           |1
        is obsolete|                            |

--- Comment #5 from Denys Vlasenko <vda.linux at googlemail.com> 2011-12-08 15:40:36 UTC ---
Created attachment 3860
  --> https://bugs.busybox.net/attachment.cgi?id=3860
Proposed patch

This patch doesn't check all invalid hostnames. It only prevents ones with
non-ascii, punctuation, with leading or repeated periods, and with leading
dashes. +43 bytes.

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