CVE-2024-25096

Canto <= 3.0.6 - Remote File Inclusion to Code Execution

2024-02-12 00:00
Rodrigo Escobar (ipax)

Strategic Overview

Status
Patched in 3.0.7
Affected Plugin
Canto
Affected Version
<= 3.0.6
CVSS
9.8Critical
Weakness type
CWE-98 · Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')
CVE
CVE-2024-25096
View all Canto vulnerabilities

At a glance

CVE-2024-25096 is a critical-severity Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in the Canto WordPress plugin, affecting versions <= 3.0.6. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 3.0.7; sites on affected versions should update now. Disclosed February 2024, reported by Rodrigo Escobar (ipax).

Vulnerability Overview

The Canto plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 3.0.6 via the 'abspath' parameter. This is due to the use of the include_once statement on the parameter allowing remote file inclusion. This makes it possible for unauthenticated attackers to execute code on the server.

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 confidentiality, integrity, availability — full site compromise territory.

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

Canto <= 3.0.6 carries this weakness at abspath, and reaching it takes a caller who can reach the endpoint. 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 Canto the fix is 3.0.7: builds <= 3.0.6 are affected, anything from 3.0.7 onward is not.

Remediation

Update to version 3.0.7, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Canto: 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: Canto 3.0.7 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-25096https://www.wordfence.com/threat-intel/vulnerabilities/id/aa080b36-01ce-496a-9938-9715f0131e29https://nvd.nist.gov/vuln/detail/CVE-2024-25096

Related records

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