CVE-2023-29440

Simple Job Board <= 2.10.3 - Cross-Site Request Forgery via sjb_save_settings_section

2023-04-07 00:00
Rafshanzani Suhada

Strategic Overview

Status
Patched in 2.10.4
Affected Plugin
Simple Job Board
Affected Version
<= 2.10.3
CVSS
4.3Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2023-29440
View all Simple Job Board vulnerabilities

At a glance

CVE-2023-29440 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Simple Job Board WordPress plugin, affecting versions <= 2.10.3. 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 2.10.4; sites on affected versions should update now. Disclosed April 2023, reported by Rafshanzani Suhada.

Vulnerability Overview

The Simple Job Board plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.10.3. This is due to missing or incorrect nonce validation on the sjb_save_settings_section function. This makes it possible for unauthenticated attackers to save plugin settings 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 Simple Job Board <= 2.10.3 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 Simple Job Board the fix is 2.10.4: builds <= 2.10.3 are affected, anything from 2.10.4 onward is not.

Remediation

Update to version 2.10.4, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Simple Job Board: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Simple Job Board 2.10.4 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-29440https://www.wordfence.com/threat-intel/vulnerabilities/id/9bbd528a-94fe-4979-b30f-02c6872db086https://nvd.nist.gov/vuln/detail/CVE-2023-29440

Related records

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