CVE-2021-24269

Sina Extension for Elementor <= 3.3.11 - Stored Cross-Site Scripting

2021-04-13 00:00

Strategic Overview

Status: Patched in 3.3.12
Affected Plugin: Sina Extension for Elementor
Affected Version: < 3.3.12
CVSS: 5.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2021-24269

View all Sina Extension for Elementor vulnerabilities

At a glance

CVE-2021-24269 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Sina Extension for Elementor WordPress plugin, affecting versions < 3.3.12. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 3.3.12; sites on affected versions should update now. Disclosed April 2021, reported by Ram.

Vulnerability Overview

The “Sina Extension for Elementor” WordPress Plugin before 3.3.12 has several widgets that are vulnerable to stored Cross-Site Scripting (XSS) by lower-privileged users such as contributors, all via a similar method.

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 Sina Extension for Elementor < 3.3.12 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 Sina Extension for Elementor the fix is 3.3.12: builds < 3.3.12 are affected, anything from 3.3.12 onward is not.

Remediation

Update to version 3.3.12, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Sina Extension for Elementor: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Sina Extension for Elementor 3.3.12 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-24269 https://www.wordfence.com/threat-intel/vulnerabilities/id/ce5f4960-e47c-4926-97f2-8c94c438a4e0 https://nvd.nist.gov/vuln/detail/CVE-2021-24269

Related records

Same weakness class

Other vulnerabilities in Sina Extension for Elementor

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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