JS Job Manager < 1.1.9 - Arbitrary Plugin Installation/Activation

2021-09-30 00:00
spacehen

Strategic Overview

Status
Patched in 1.1.9
Affected Plugin
JS Job Manager
Affected Version
< 1.1.9
CVSS
9.1Critical
Weakness type
CWE-862 · Missing Authorization
CVE
CVE pending
View all JS Job Manager vulnerabilities

At a glance

This record tracks a critical-severity Missing Authorization vulnerability in the JS Job Manager WordPress plugin, affecting versions < 1.1.9. It carries a CVSS score of 9.1 (reachable over the network; low attack complexity; high integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 1.1.9; sites on affected versions should update now. Disclosed September 2021, reported by spacehen.

Vulnerability Overview

The JS Job Manager plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the jsjobs_ajax function in versions before 1.1.9. This makes it possible for unauthenticated attackers to arbitrarily install and activate plugins.

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 integrity, availability.

CWE-862: Missing Authorization

Reaching this weakness in JS Job Manager < 1.1.9 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For JS Job Manager the fix is 1.1.9: builds < 1.1.9 are affected, anything from 1.1.9 onward is not.

Remediation

Update to version 1.1.9, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: JS Job Manager 1.1.9 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/3e1f64f5-090a-4961-8490-d34f458a8d44

Related records

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