Bug in ldapdb_plugin - No check if memory is exhausted in ldapdb_canon_client

Lars Duesing lars.duesing at camelotsweb.de
Fri May 14 09:56:37 EDT 2010

Hi List,


I used the ldapdb_plugin as a template for my sql_plugin-enhancements.

While reading through the code there is one problem coming to my mind:

In ldapdb_canon_client there is NO check whether ulen is greater than
out_umax - maybe it is only a minor issue because the string user is only
truncated, but I didn't have a look if there could be any situation where
the size of the string user could be greater than out_umax.


Patch would be: 

>if (ulen>out_umax) return SASL_NOMEM;

Just in front of the memcpy.



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