Memory Usage, Memory Limit, PHP and Server Memory Health Check and Fix Plugin <= 2.43 - Cross-Site Scripting
Strategic Overview
- Status
- Patched in 2.44
- Affected Plugin
- Memory Usage, Memory Limit, PHP and Server Memory Health Check and Provide Suggestions
- Affected Version
<= 2.43- CVSS
- 6.1Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE pending
At a glance
This record tracks a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Memory Usage, Memory Limit, PHP and Server Memory Health Check and Provide Suggestions WordPress plugin, affecting versions <= 2.43. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.44; sites on affected versions should update now. Disclosed June 2022.
Vulnerability Overview
The Memory Usage, Memory Limit, PHP and Server Memory Health Check plugin for WordPress is vulnerable to Stored Cross-Site Scripting via several parameters in versions up to, and including, 2.43 due to insufficient input sanitization and output escaping. This makes it possible for attackers, with subscriber-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in Memory Usage, Memory Limit, PHP and Server Memory Health Check and Provide Suggestions <= 2.43 takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Memory Usage, Memory Limit, PHP and Server Memory Health Check and Provide Suggestions the fix is 2.44: builds <= 2.43 are affected, anything from 2.44 onward is not.
Remediation
Update to version 2.44, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Memory Usage, Memory Limit, PHP and Server Memory Health Check and Provide Suggestions: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Memory Usage, Memory Limit, PHP and Server Memory Health Check and Provide Suggestions 2.44 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in Memory Usage, Memory Limit, PHP and Server Memory Health Check and Provide Suggestions
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