CVE-2023-6583

Import and export users and customers <= 1.24.2 - Authenticated(Administrator+) Directory Traversal via Recurring Import Functionality

2023-12-08 00:00
Labda

Strategic Overview

Status
Patched in 1.24.3
Affected Plugin
Import and export users and customers
Affected Version
<= 1.24.2
CVSS
6.6Medium
Weakness type
CWE-98 · Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
CVE
CVE-2023-6583
View all Import and export users and customers vulnerabilities

At a glance

CVE-2023-6583 is a medium-severity Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in the Import and export users and customers WordPress plugin, affecting versions <= 1.24.2. It carries a CVSS score of 6.6 (reachable over the network; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Administrator level or above. The issue is fixed in version 1.24.3; sites on affected versions should update now. Disclosed December 2023, reported by Labda.

Vulnerability Overview

The Import and export users and customers plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 1.24.2 via the Recurring Import functionality. This makes it possible for authenticated attackers, with administrator access and above, to read and delete the contents of arbitrary files on the server including wp-config.php, which can contain sensitive information.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')

Reaching this weakness in Import and export users and customers <= 1.24.2 takes an account at Administrator level or above. PHP file inclusion means a path used by include or require is built from request data, so the file that gets executed is under the caller's influence.

Including an attacker-influenced file executes its contents, which is why this class is routinely chained with an upload or log-poisoning step to reach code execution. For Import and export users and customers the fix is 1.24.3: builds <= 1.24.2 are affected, anything from 1.24.3 onward is not.

Remediation

Update to version 1.24.3, or a newer patched version

How does WordSec protect against this?

An attacker needs Administrator access first, so the firewall sees the attempt as traffic from a logged-in account: 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: Import and export users and customers 1.24.3 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-6583https://www.wordfence.com/threat-intel/vulnerabilities/id/ac709779-36f1-4f66-8db3-95a514a5ea59https://nvd.nist.gov/vuln/detail/CVE-2023-6583

Related records

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