Page View Counts <= 2.4.8 - Contributor+ Stored Cross-Site Scripting

2021-07-12 00:00

apple502j

Strategic Overview

Status

Patched in 2.4.9

Affected PluginPage View Count

Affected Version<= 2.4.8

CVSS5.4Medium

CVECVE-2021-24509

View all Page View Count vulnerabilities

Vulnerability Overview

The Page View Count WordPress plugin before 2.4.9 does not escape the postid parameter of pvc_stats shortcode, allowing users with a role as low as Contributor to perform Stored XSS attacks. A post made by a contributor would still have to be approved by an admin to have the XSS triggered in the frontend, however, higher privilege users, such as editor could exploit this without the need of approval, and even when the blog disallows the unfiltered_html capability.

Technical Analysis

REMEDIATION: Update to version 2.4.9, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24509 https://www.wordfence.com/threat-intel/vulnerabilities/id/f882da12-2db7-481f-9a16-a54e1ab24af5

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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