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WordPress Pingback Denial of Service Security Issue
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Secunia Advisory:
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SA24951
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Release Date:
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2007-04-19
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Last Update:
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2007-04-20
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Popularity:
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9,044 views
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | WordPress 2.x
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Description:
foobarwp12 has reported a security issue in WordPress, which potentially can be exploited by malicious people to cause a DoS (Denial of Service).
The security issue is caused due to WordPress not verifying pingback URLs or limiting the maximum size of files to be downloaded during the pingback process. This can be exploited to cause high bandwidth usage by sending multiple pingbacks containing URLs to large files.
The security issue is confirmed in version 2.1.3. Other versions may also be affected.
Solution:
Edit the source code to ensure that pingback URLs are properly verified and no large files can be downloaded.
Provided and/or discovered by:
Reported in a WordPress bug by foobarwp12. Also reported by Blake Matheny.
Changelog:
2007-04-20: Updated "Provided and/or discovered by" section.
Original Advisory:
http://trac.wordpress.org/ticket/4137
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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.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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