CVE-2022-0205

YOP Poll <= 6.3.4 - Author+ Stored Cross-Site Scripting

2022-02-14 00:00

Strategic Overview

Status: Patched in 6.3.5
Affected Plugin: YOP Poll
Affected Version: <= 6.3.4
CVSS: 6.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2022-0205

At a glance

CVE-2022-0205 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the YOP Poll WordPress plugin, affecting versions <= 6.3.4. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). The issue is fixed in version 6.3.5; sites on affected versions should update now. Disclosed February 2022, reported by R3N0.

Vulnerability Overview

The YOP Poll WordPress plugin before 6.3.5 does not sanitise and escape some of the settings (available to users with a role as low as author) before outputting them, leading to a Stored Cross-Site Scripting issue

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 YOP Poll <= 6.3.4 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 YOP Poll the fix is 6.3.5: builds <= 6.3.4 are affected, anything from 6.3.5 onward is not.

Remediation

Update to version 6.3.5, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to YOP Poll: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: YOP Poll 6.3.5 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-0205 https://www.wordfence.com/threat-intel/vulnerabilities/id/b7beaa9e-517b-4717-b896-3e37424e27a3 https://nvd.nist.gov/vuln/detail/CVE-2022-0205

Related records

Same weakness class

Other vulnerabilities in YOP Poll

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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