AccessPress Social Icons 1.8.2 - Backdoor

2022-01-18 00:00
Harald Eilertsen

Strategic Overview

Status
Patched in 1.8.3
Affected Version
1.8.2
CVSS
7.5High
Weakness type
CWE-912 · Hidden Functionality
CVE
CVE pending
View all AccessPress Social Icons vulnerabilities

At a glance

This record tracks a high-severity Hidden Functionality vulnerability in the AccessPress Social Icons WordPress plugin, affecting versions 1.8.2. It carries a CVSS score of 7.5 (reachable over the network; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 1.8.3; sites on affected versions should update now. Disclosed January 2022, reported by Harald Eilertsen.

Vulnerability Overview

The AccessPress Social Icons plugin for WordPress contains a backdoor when downloaded directly from the AccessPress site in version 1.8.2. This allows attackers to gain full control of a site with the plugin installed.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, and no privileges on the target site. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-912: Hidden Functionality

The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators.

Remediation

Update to version 1.8.3, or a newer patched version

How does WordSec protect against this?

Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: AccessPress Social Icons 1.8.3 closes this, and updating the plugin is the step that ends it.

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