CVE-2023-28689

JS Job Manager <= 2.0.0 - Missing Authorization

2023-03-21 00:00

Strategic Overview

Status: Patched in 2.0.1
Affected Plugin: JS Job Manager
Affected Version: <= 2.0.0
CVSS: 6.5Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2023-28689

At a glance

CVE-2023-28689 is a medium-severity Missing Authorization vulnerability in the JS Job Manager WordPress plugin, affecting versions <= 2.0.0. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high integrity impact). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 2.0.1; sites on affected versions should update now. Disclosed March 2023, reported by Fariq Fadillah Gusti Insani (fariqfgi).

Vulnerability Overview

The JS Job Manager plugin for WordPress is vulnerable to unauthorized access to plugin functionality due to missing capability checks on several functions called via AJAX actions in versions up to, and including, 2.0.0. This makes it possible for authenticated attackers with subscriber-level access, and above, to make use of much of the plugin's functionality.

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 integrity.

CWE-862: Missing Authorization

Reaching this weakness in JS Job Manager <= 2.0.0 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 2.0.1: builds <= 2.0.0 are affected, anything from 2.0.1 onward is not.

Remediation

Update to version 2.0.1, 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 2.0.1 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-28689 https://www.wordfence.com/threat-intel/vulnerabilities/id/55604ee9-7343-472c-9a29-035d18b266ab https://nvd.nist.gov/vuln/detail/CVE-2023-28689

Related records

Same weakness class

Other vulnerabilities in JS Job Manager

CVSS Vector

6.5

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone

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