CVE-2024-33558

XStore Core <= 5.3.8 - Authenticated (Subscriber+) Limited Arbitrary File Download

2024-04-25 00:00
Rafie Muhammad

Strategic Overview

Status
Patched in 5.3.9
Affected Plugin
XStore Core
Affected Version
<= 5.3.8
CVSS
6.5Medium
Weakness type
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE
CVE-2024-33558
View all XStore Core vulnerabilities

At a glance

CVE-2024-33558 is a medium-severity Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the XStore Core WordPress plugin, affecting versions <= 5.3.8. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 5.3.9; sites on affected versions should update now. Disclosed April 2024, reported by Rafie Muhammad.

Vulnerability Overview

The et-core-plugin plugin for WordPress is vulnerable to arbitrary file downloads in all versions up to, and including, 5.3.8. This is due to the plugin not properly restricting which files can be downloaded. This makes it possible for authenticated attackers, with subscriber-level access and above, to download arbitrary files that may contain sensitive information like wp-config.php.

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 interaction from a victim user. A successful exploit has high impact on confidentiality.

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Reaching this weakness in XStore Core <= 5.3.8 takes an account at Subscriber level or above. Path traversal happens when user-controlled text is used to build a filesystem path without being constrained to an intended directory, so sequences like ../ walk the resolved path somewhere else.

Depending on the operation, it means reading files outside the intended folder — wp-config.php being the usual target — or writing to and deleting paths the web server can touch. For XStore Core the fix is 5.3.9: builds <= 5.3.8 are affected, anything from 5.3.9 onward is not.

Remediation

Update to version 5.3.9, or a newer patched version

How does WordSec protect against this?

An attacker needs Subscriber 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. None of that substitutes for the fix: XStore Core 5.3.9 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-33558https://www.wordfence.com/threat-intel/vulnerabilities/id/b6986569-a273-4aea-bc74-ef7277781661https://nvd.nist.gov/vuln/detail/CVE-2024-33558

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C