CVE-2023-45068

Contact Form by Supsystic <= 1.7.27 - Cross-Site Request Forgery

2023-10-03 00:00
Taihei Shimamine

Strategic Overview

Status
Patched in 1.7.28
Affected Plugin
Contact Form by Supsystic
Affected Version
<= 1.7.27
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2023-45068
View all Contact Form by Supsystic vulnerabilities

At a glance

CVE-2023-45068 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Contact Form by Supsystic WordPress plugin, affecting versions <= 1.7.27. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.7.28; sites on affected versions should update now. Disclosed October 2023, reported by Taihei Shimamine.

Vulnerability Overview

The Contact Form by Supsystic plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.7.27. This is due to missing nonce validation on an unknown function. This makes it possible for unauthenticated attackers to perform an unauthorized action via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

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.

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in Contact Form by Supsystic <= 1.7.27 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For Contact Form by Supsystic the fix is 1.7.28: builds <= 1.7.27 are affected, anything from 1.7.28 onward is not.

Remediation

Update to version 1.7.28, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Contact Form by Supsystic: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Contact Form by Supsystic 1.7.28 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-45068https://www.wordfence.com/threat-intel/vulnerabilities/id/16dc1927-2171-4234-805b-6e4eed99fa90https://nvd.nist.gov/vuln/detail/CVE-2023-45068

Related records

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