CVE-2020-20626

Lara Google Analytics <= 2.0.4 - Stored Cross-Site Scripting

2019-10-14 00:00

Strategic Overview

Status: Patched in 2.0.5
Affected Plugin: Lara's Google Analytics (GA4)
Affected Version: < 2.0.5
CVSS: 5.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2020-20626

View all Lara's Google Analytics (GA4) vulnerabilities

At a glance

CVE-2020-20626 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Lara's Google Analytics (GA4) WordPress plugin, affecting versions < 2.0.5. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 2.0.5; sites on affected versions should update now. Disclosed October 2019, reported by Jerome Bruandet.

Vulnerability Overview

lara-google-analytics.php in Lara Google Analytics plugin through 2.0.4 for WordPress allows authenticated stored XSS.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed.

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

Reaching this weakness in Lara's Google Analytics (GA4) < 2.0.5 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 Lara's Google Analytics (GA4) the fix is 2.0.5: builds < 2.0.5 are affected, anything from 2.0.5 onward is not.

Remediation

Update to version 2.0.5, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Lara's Google Analytics (GA4): WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Lara's Google Analytics (GA4) 2.0.5 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-20626 https://www.wordfence.com/threat-intel/vulnerabilities/id/72fa6b56-dfbf-4c27-a6f3-418d1ab5dc0f https://nvd.nist.gov/vuln/detail/CVE-2020-20626

CVSS Vector

5.4

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

Base

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

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