lwIP - 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
Submitter: | Simon Goldschmidt <goldsimon> | ||
Submitted: | Tue 27 Sep 2011 05:53:39 AM UTC | ||
Category: | IPv4 | Severity: | 3 - Normal |
Item Group: | None | Status: | Fixed |
Privacy: | Public | Assigned to: | goldsimon |
Open/Closed: | Closed | Planned Release: | None |
lwIP version: | CVS Head |
Tue 27 Sep 2011 05:56:59 AM UTC, comment #1: |
Simon Goldschmidt <goldsimon> |
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> |
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Follow 2 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2011-09-27 | goldsimon | Status | In Progress | Fixed | |
Open/Closed | Open | Closed |
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Corresponding source code
Fixed by limiting the hostname based on already added options and trailer.