|
If hex data with a value of 0x11 is being routed through readconnroute, it is possible that some of it is misinterpreted as a COM_CHANGE_USER causing the query to fail.
Example with a file containing only 0x11 values:
[markusjm@localhost ~]$ mysql -u maxuser -pmaxpwd -h 192.168.0.201 -P 4008 test -e "insert into t1 values (\"0x`cat /tmp/data|head -c 90800`\")"
|
ERROR 1045 (28000) at line 1: Access denied for user '��������������������������������������������������������������������������������������������������������������������������������'@'192.168.0.201' (using password: YES)
|
This is due to the fact that readconnroute supports COM_CHANGE_USER and reads the command byte from each network packet.
|