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WordPress Custom Field PHP Script Upload
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Secunia Advisory:
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SA25794
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Release Date:
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2007-06-26
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Last Update:
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2007-07-11
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Popularity:
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10,617 views
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Critical:
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Moderately critical
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Impact:
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Security Bypass
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | WordPress 2.x
WordPress MU 1.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2007-3543
CVE-2007-3544
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Description:
Alexander Concha has discovered a vulnerability in WordPress and WordPress MU, which can be exploited by malicious users to bypass certain security restrictions and to compromise a vulnerable system.
The vulnerability is caused due to improper authentication verification. This can be exploited to add the custom field "_wp_attached_file" to a post, upload a PHP script to an arbitrary path with wp-app.php or app.php, and execute arbitrary PHP code.
Successful exploitation requires valid Editor credentials and that the system is configured to allow uploads.
The vulnerability is confirmed in WordPress 2.2 and reported in WordPress MU 1.2.2. Prior versions may also be affected.
Solution:
Update to WordPress 2.2.1 or WordPress MU 1.2.3.
Provided and/or discovered by:
Alexander Concha
Changelog:
2007-07-11: Added CVE reference.
Original Advisory:
http://www.buayacorp.com/files/wordpress/wordpress-advisory.html
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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