CVE-2022-0428

Content Egg <= 5.3.0 - Reflected Cross-Site Scripting

2022-04-06 00:00

Strategic Overview

Status: Patched in 5.3.0
Affected Plugin: Content Egg – Affiliate Product Importer & Price Comparison
Affected Version: < 5.3.0
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2022-0428

View all Content Egg – Affiliate Product Importer & Price Comparison vulnerabilities

At a glance

CVE-2022-0428 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Content Egg WordPress plugin, affecting versions < 5.3.0. 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 5.3.0; sites on affected versions should update now. Disclosed April 2022, reported by Krzysztof Zając.

Vulnerability Overview

The Content Egg WordPress plugin before 5.3.0 does not sanitise and escape the page parameter before outputting back in an attribute in the Autoblogging admin dashboard, leading to a Reflected Cross-Site Scripting

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 Content Egg < 5.3.0 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 Content Egg the fix is 5.3.0: builds < 5.3.0 are affected, anything from 5.3.0 onward is not.

Remediation

Update to version 5.3.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Content Egg: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Content Egg 5.3.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-0428 https://www.wordfence.com/threat-intel/vulnerabilities/id/6c26ecf2-f5bb-427f-9f09-6b3d1fb5da3c https://nvd.nist.gov/vuln/detail/CVE-2022-0428

Related records

CVSS Vector

6.1

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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