Smash Balloon Social Post Feed <= 4.0 - Arbitrary Plugin Settings Update to Stored Cross-Site Scripting

2021-10-29 00:00

Marc-Alexandre Montpas

Strategic Overview

Status

Patched in 4.0.1

Affected PluginSmash Balloon Social Post Feed – Simple Social Feeds for WordPress

Affected Version< 4.0.1

CVSS5.4Medium

CVECVE-2021-24918

View all Smash Balloon Social Post Feed – Simple Social Feeds for WordPress vulnerabilities

Vulnerability Overview

The Smash Balloon Social Post Feed WordPress plugin before 4.0.1 did not have any privilege or nonce validation before saving the plugin's setting. As a result, any logged-in user on a vulnerable site could update the settings and store rogue JavaScript on each of its posts and pages.

Technical Analysis

REMEDIATION: Update to version 4.0.1, 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-2021-24918 https://www.wordfence.com/threat-intel/vulnerabilities/id/74fac72d-6f16-475c-bc80-e77968dd23ad

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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