CVE-2018-20155

WP Maintenance Mode <= 2.0.6 - Missing Authorization

2016-07-06 00:00

Strategic Overview

Status: Patched in 2.0.7
Affected Plugin: LightStart – Maintenance Mode, Coming Soon and Landing Page Builder
Affected Version: < 2.0.7
CVSS: 5.4Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2018-20155

View all LightStart – Maintenance Mode, Coming Soon and Landing Page Builder vulnerabilities

At a glance

CVE-2018-20155 is a medium-severity Missing Authorization vulnerability in the LightStart WordPress plugin, affecting versions < 2.0.7. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 2.0.7; sites on affected versions should update now. Disclosed July 2016, reported by Sean Murphy.

Vulnerability Overview

The WP Maintenance Mode plugin before 2.0.7 for WordPress allows remote authenticated subscriber users to bypass intended access restrictions on changes to plugin settings.

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.

CWE-862: Missing Authorization

Reaching this weakness in LightStart < 2.0.7 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 LightStart the fix is 2.0.7: builds < 2.0.7 are affected, anything from 2.0.7 onward is not.

Remediation

Update to version 2.0.7, 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: LightStart 2.0.7 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2018-20155 https://www.wordfence.com/threat-intel/vulnerabilities/id/00d69e80-36fa-4b74-8138-56c0bf576e44 https://nvd.nist.gov/vuln/detail/CVE-2018-20155

Related records

Same weakness class

Other vulnerabilities in LightStart – Maintenance Mode, Coming Soon and Landing Page Builder

CVSS Vector

5.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityLow

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