RCE in WordPress
CVE-2009-3890
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 6.0 (Medium). Vector: AV:N/AC:M/Au:S/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.084 (94.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.084 · newest: 0.084 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secunia.com/advisories/37332 (Third Party Advisory, third-party-advisory)
- www.openwall.com/lists/oss-security/2009/11/16/1 (mailing-list, Mailing List, Third Party Advisory)
- archives.neohapsis.com/archives/fulldisclosure/2009-11/0142.html (mailing-list, Broken Link)
- wordpress.org/development/2009/11/wordpress-2-8-6-security-release/ (Patch, Vendor Advisory)
- archives.neohapsis.com/archives/fulldisclosure/2009-11/0153.html (mailing-list, Broken Link)
- www.openwall.com/lists/oss-security/2009/11/15/3 (mailing-list, Mailing List, Third Party Advisory)
- core.trac.wordpress.org/ticket/11122 (Issue Tracking, Vendor Advisory)
- www.osvdb.org/59958 (vdb-entry, Broken Link)
- archives.neohapsis.com/archives/fulldisclosure/2009-11/0149.html (mailing-list, Broken Link)
- www.openwall.com/lists/oss-security/2009/11/15/2 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2009-3890?
- CVE-2009-3890 is a vulnerability in WordPress, classified under Code Injection. Published 2009-11-17.
- Is CVE-2009-3890 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.