CVE-2020-36730

CMP <= 3.8.1 - Missing Authorization

2020-08-04 00:00

Strategic Overview

Status: Patched in 3.8.2
Affected Plugin: CMP – Coming Soon & Maintenance Plugin by NiteoThemes
Affected Version: <= 3.8.1
CVSS: 8.3High
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2020-36730

View all CMP – Coming Soon & Maintenance Plugin by NiteoThemes vulnerabilities

At a glance

CVE-2020-36730 is a high-severity Missing Authorization vulnerability in the CMP WordPress plugin, affecting versions <= 3.8.1. It carries a CVSS score of 8.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.8.2; sites on affected versions should update now. Disclosed August 2020, reported by Jerome Bruandet.

Vulnerability Overview

The CMP for WordPress is vulnerable to authorization bypass due to a missing capability check on the cmp_get_post_detail(), niteo_export_csv(), and cmp_disable_comingsoon_ajax() functions in versions up to, and including, 3.8.1. This makes it possible for unauthenticated attackers to read posts, export subscriber lists, and/or deactivate the plugin.

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.

CWE-862: Missing Authorization

CMP <= 3.8.1 carries this weakness at cmp_get_post_detail(), and reaching it 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 CMP the fix is 3.8.2: builds <= 3.8.1 are affected, anything from 3.8.2 onward is not.

Remediation

Update to version 3.8.2, 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: CMP 3.8.2 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-36730 https://www.wordfence.com/threat-intel/vulnerabilities/id/f1ef067b-e4b4-4174-b6ff-ec94a7afd55d https://nvd.nist.gov/vuln/detail/CVE-2020-36730

Related records

Same weakness class

Other vulnerabilities in CMP – Coming Soon & Maintenance Plugin by NiteoThemes

CVSS Vector

8.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityLow

This record contains material that is subject to copyright

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

https://www.cve.org/Legal/TermsOfUse

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/