buglwIP - A Lightweight TCP/IP stack - Bugs: bug #34406, dhcp_option_hostname() can...

 
 

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bug #34406: dhcp_option_hostname() can overflow the pbuf

Submitted by:  Simon Goldschmidt <goldsimon>
Submitted on:  Tue 27 Sep 2011 05:53:39 AM UTC  
 
Category: IPv4Severity: 3 - Normal
Item Group: NoneStatus: Fixed
Privacy: PublicAssigned to: Simon Goldschmidt <goldsimon>
Open/Closed: ClosedPlanned Release: None
lwIP version: CVS Head

Tue 27 Sep 2011 05:56:59 AM UTC, comment #1:

Fixed by limiting the hostname based on already added options and trailer.

Simon Goldschmidt <goldsimon>
Project AdministratorIn charge of this item.
Tue 27 Sep 2011 05:53:39 AM UTC, original submission:

dhcp_option_hostname() can overflow the 'options' array in 'struct dhcp_msg' (size not checked) and it does so currently (with the default settings) due to a bug in the fix for bug #34122.

Simon Goldschmidt <goldsimon>
Project AdministratorIn charge of this item.

 

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    Follow 2 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Tue 27 Sep 2011 05:56:59 AM UTCgoldsimonStatusIn Progress=>Fixed
      Open/ClosedOpen=>Closed

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