CVE-2023-6155

Quiz Maker <= 6.4.9.4 - Missing Authorization to Email Disclosure

2023-11-30 00:00

Strategic Overview

Status: Patched in 6.4.9.5
Affected Plugin: Quiz Maker by AYS
Affected Version: <= 6.4.9.4
CVSS: 5.3Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2023-6155

View all Quiz Maker by AYS vulnerabilities

At a glance

CVE-2023-6155 is a medium-severity Missing Authorization vulnerability in the Quiz Maker by AYS WordPress plugin, affecting versions <= 6.4.9.4. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 6.4.9.5; sites on affected versions should update now. Disclosed November 2023, reported by Krzysztof Zając.

Vulnerability Overview

The Quiz Maker plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the ays_quiz_author_user_search function in all versions up to 6.4.9.5 (exclusive). This makes it possible for unauthenticated attackers to perform a search for users and obtain user email addresses.

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

Reaching this weakness in Quiz Maker by AYS <= 6.4.9.4 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 Quiz Maker by AYS the fix is 6.4.9.5: builds <= 6.4.9.4 are affected, anything from 6.4.9.5 onward is not.

Remediation

Update to version 6.4.9.5, 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: Quiz Maker by AYS 6.4.9.5 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2023-6155 https://www.wordfence.com/threat-intel/vulnerabilities/id/96bc27f3-6aa4-4119-9978-5e9dee5f1796 https://nvd.nist.gov/vuln/detail/CVE-2023-6155

Related records

Same weakness class

Other vulnerabilities in Quiz Maker by AYS

CVSS Vector

5.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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