Advanced Cron Manager <= 2.4.1 - Subscriber+ Arbitrary Events/Schedules Creation/Deletion
Strategic Overview
- Status
- Patched in 2.4.2
- Affected Plugin
- Advanced Cron Manager – debug & control
- Affected Version
< 2.4.2- CVSS
- 4.3Medium
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2021-25084
At a glance
CVE-2021-25084 is a medium-severity Missing Authorization vulnerability in the Advanced Cron Manager WordPress plugin, affecting versions < 2.4.2. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). The issue is fixed in version 2.4.2; sites on affected versions should update now. Disclosed January 2022, reported by Krzysztof Zając.
Vulnerability Overview
The Advanced Cron Manager WordPress plugin before 2.4.2 and Advanced Cron Manager Pro WordPress plugin before 2.5.3 do not have authorisation checks in some of their AJAX actions, allowing any authenticated users, such as subscriber to call them and add or remove events as well as schedules for example
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 Advanced Cron Manager < 2.4.2 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 Advanced Cron Manager the fix is 2.4.2: builds < 2.4.2 are affected, anything from 2.4.2 onward is not.
Remediation
Update to version 2.4.2, 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: Advanced Cron Manager 2.4.2 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Advanced Cron Manager – debug & control
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