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Moderately critical

WordPress Multiple Vulnerabilities

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Release Date:  2007-09-12    Last Update:  2008-05-14    Views:  16,505

Secunia Advisory SA26771

Where:

From remote

Impact:

Security Bypass, Cross Site Scripting, Manipulation of data

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Some vulnerabilities have been reported in WordPress, which can be exploited by malicious users to conduct script insertion attacks and bypass certain security restrictions, and by malicious people to conduct SQL injection attacks.

1) The "unfiltered_html" privilege feature can be bypassed by adding a field named "no_filter". This can be exploited by malicious users without the "unfiltered_html" privilege to e.g. post blog entries with arbitrary HTML and script code via specially crafted POST requests.

2) Input passed to certain parameters (e.g. the "post_type" parameter of the URL passed to the "pingback.extensions.getPingbacks()" XMLRPC method) is not properly sanitised before being used in SQL queries. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.

3) A vulnerability is caused due to improper access restriction. This can be exploited to bypass the authentication mechanism and e.g. switch themes or activate/deactivate plugins without valid administrator credentials, by passing malicious data in the "PATH_INFO" part of a URL.

Successful exploitation of this vulnerability requires valid user credentials.

The vulnerabilities are reported in Wordpress prior to 2.2.3 and Wordpress MU prior to 1.2.5a.


Solution:
Update to Wordpress version 2.2.3 or Wordpress MU version 1.2.5a.

Provided and/or discovered by:
1) xknown
2) Alexander Concha, buayacorp.com
3) xknown

Original Advisory:
1) http://trac.wordpress.org/ticket/4720
2) http://www.buayacorp.com/files/wordpress/wordpress-sql-injection-advisory.html
3) http://trac.wordpress.org/ticket/4748

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: WordPress Multiple Vulnerabilities

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