CVE-2021-36874

uListing plugin <= 2.0.5 - Authenticated Insecure Direct Object References (IDOR)

2021-07-27 00:00

Strategic Overview

Status: Patched in 2.0.6
Affected Plugin: Directory Listings WordPress plugin – uListing
Affected Version: <= 2.0.5
CVSS: 7.1High
Weakness type: CWE-639 · Authorization Bypass Through User-Controlled Key
CVE: CVE-2021-36874

View all Directory Listings WordPress plugin – uListing vulnerabilities

At a glance

CVE-2021-36874 is a high-severity Authorization Bypass Through User-Controlled Key vulnerability in the Directory Listings WordPress plugin WordPress plugin, affecting versions <= 2.0.5. It carries a CVSS score of 7.1 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires an authenticated account. The issue is fixed in version 2.0.6; sites on affected versions should update now. Disclosed July 2021, reported by R3N0.

Vulnerability Overview

Authenticated Insecure Direct Object References (IDOR) vulnerability in WordPress uListing plugin (versions <= 2.0.5).

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-639: Authorization Bypass Through User-Controlled Key

Reaching this weakness in Directory Listings WordPress plugin <= 2.0.5 takes any authenticated account. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.

Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For Directory Listings WordPress plugin the fix is 2.0.6: builds <= 2.0.5 are affected, anything from 2.0.6 onward is not.

Remediation

Update to version 2.0.6, 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: Directory Listings WordPress plugin 2.0.6 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-36874 https://www.wordfence.com/threat-intel/vulnerabilities/id/85fd3e3c-f1cb-4384-86fd-3691f1deb963 https://nvd.nist.gov/vuln/detail/CVE-2021-36874

Related records

Other vulnerabilities in Directory Listings WordPress plugin – uListing

CVSS Vector

7.1

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

Base

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

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