CVE-2009-3890: Code Injection
First published: Tue Nov 17 2009(Updated: )
Unrestricted file upload vulnerability in the wp_check_filetype function in wp-includes/functions.php in WordPress before 2.8.6, when a certain configuration of the mod_mime module in the Apache HTTP Server is enabled, allows remote authenticated users to execute arbitrary code by posting an attachment with a multiple-extension filename, and then accessing this attachment via a direct request to a wp-content/uploads/ pathname, as demonstrated by a .php.jpg filename.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| WordPress | <=2.8.5 |
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Reference Links
- http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0142.html
- http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0149.html
- http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0153.html
- http://core.trac.wordpress.org/ticket/11122
- http://secunia.com/advisories/37332
- http://wordpress.org/development/2009/11/wordpress-2-8-6-security-release/
- http://www.openwall.com/lists/oss-security/2009/11/15/2
- http://www.openwall.com/lists/oss-security/2009/11/15/3
- http://www.openwall.com/lists/oss-security/2009/11/16/1
- http://www.osvdb.org/59958
Frequently Asked Questions
What is the severity of CVE-2009-3890?
CVE-2009-3890 has a high severity due to its potential to allow remote authenticated users to execute arbitrary code.
How do I fix CVE-2009-3890?
To fix CVE-2009-3890, upgrade WordPress to version 2.8.6 or later.
Who is affected by CVE-2009-3890?
CVE-2009-3890 affects users of WordPress versions prior to 2.8.6 with specific Apache mod_mime configurations.
What type of vulnerability is CVE-2009-3890?
CVE-2009-3890 is classified as an unrestricted file upload vulnerability.
Can CVE-2009-3890 be exploited without authentication?
No, CVE-2009-3890 requires remote authenticated users to exploit the vulnerability.
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