WordPress Core <= 2.8.5 - Arbitrary File Upload

2009-12-12 00:00

Dawid Golunski

Strategic Overview

Status

Patched in 2.8.6

Affected CoreWordPress 2.8

Affected Version<= 2.8.5

CVSS8.8High

CVECVE-2009-3890

View all WordPress 2.8 vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 2.8.6, or a newer patched version --- IDENTIFIER: CWE-434 (Unrestricted Upload of File with Dangerous Type) The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

External References

https://www.cve.org/CVERecord?id=CVE-2009-3890 https://www.wordfence.com/threat-intel/vulnerabilities/id/f9ce0ae8-4729-4236-b4e8-e5726f4d3101

CVSS Vector

8.8

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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