Blog-in-Blog <= 2.0.0 - Authenticated (Editor+) Stored Cross-Site Scripting via Shortcode

2023-05-30 00:00

István Márton

Strategic Overview

Status

Patched in 2.0.1

Affected PluginBlog-in-Blog

Affected Version<= 2.0.0

CVSS4.4Medium

CVECVE-2023-2436

View all Blog-in-Blog vulnerabilities

Vulnerability Overview

The Blog-in-Blog plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'blog_in_blog' shortcode in versions up to, and including, 2.0.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with editor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

REMEDIATION: Update to version 2.0.1, 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-2023-2436 https://www.wordfence.com/threat-intel/vulnerabilities/id/5c6a88c3-18b7-470f-8014-373ead66dcfa

CVSS Vector

4.4

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

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredHigh
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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