CVE-2019-14794

Meta Box <= 4.16.1 - Mishandling of File Upload

2019-02-01 00:00

Strategic Overview

Status: Patched in 4.16.2
Affected Plugin: Meta Box – A Framework for Dynamic Websites
Affected Version: <= 4.16.1
CVSS: 7.5High
Weakness type: CWE-73 · External Control of File Name or Path
CVE: CVE-2019-14794

View all Meta Box – A Framework for Dynamic Websites vulnerabilities

At a glance

CVE-2019-14794 is a high-severity External Control of File Name or Path vulnerability in the Meta Box WordPress plugin, affecting versions <= 4.16.1. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 4.16.2; sites on affected versions should update now. Disclosed February 2019.

Vulnerability Overview

The Meta Box plugin before 4.16.2 for WordPress mishandles the uploading of files to custom folders.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on integrity.

CWE-73: External Control of File Name or Path

The product allows user input to control or influence paths or file names that are used in filesystem operations.

Remediation

Update to version 4.16.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Meta Box: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Meta Box 4.16.2 closes this, and updating the plugin is the step that ends it.

Firewall
Scanner
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2019-14794 https://www.wordfence.com/threat-intel/vulnerabilities/id/7b5ef9de-ba5e-463e-a528-098d724b1657 https://nvd.nist.gov/vuln/detail/CVE-2019-14794

Related records

Other vulnerabilities in Meta Box – A Framework for Dynamic Websites

CVSS Vector

7.5

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone

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