CVE-2022-0448

CP Blocks <= 1.0.14 - Authenticated Stored Cross-Site Scripting via License ID settings

2022-02-02 00:00

Strategic Overview

Status: Patched in 1.0.15
Affected Plugin: CP Blocks
Affected Version: < 1.0.15
CVSS: 6.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2022-0448

At a glance

CVE-2022-0448 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the CP Blocks WordPress plugin, affecting versions < 1.0.15. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account. The issue is fixed in version 1.0.15; sites on affected versions should update now. Disclosed February 2022, reported by Shweta Mahajan.

Vulnerability Overview

The CP Blocks WordPress plugin before 1.0.15 does not sanitise and escape its "License ID" settings, which could allow high privilege users to inject arbitrary web scripts that execute in a victim's browser even when the unfiltered_html is disallowed.

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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in CP Blocks < 1.0.15 takes any authenticated account. 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 CP Blocks the fix is 1.0.15: builds < 1.0.15 are affected, anything from 1.0.15 onward is not.

Remediation

Update to version 1.0.15, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to CP Blocks: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: CP Blocks 1.0.15 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-0448 https://www.wordfence.com/threat-intel/vulnerabilities/id/e8a69fa8-c2a8-4d63-8db4-823122632b3a https://nvd.nist.gov/vuln/detail/CVE-2022-0448

Related records

Other vulnerabilities in CP Blocks

4.3CVE-2023-41732: CP Blocks <= 1.0.20 CSRF to Settings UpdateCVE-2023-41732

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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