CVE-2020-5642

Live Chat – Live support <= 3.1.0 - Cross-Site Request Forgery

2020-10-14 00:00

Strategic Overview

Status: Patched in 3.2.0
Affected Plugin: Live Chat & AI Chatbot – onWebChat
Affected Version: <= 3.1.0
CVSS: 8.8High
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE-2020-5642

View all Live Chat & AI Chatbot – onWebChat vulnerabilities

At a glance

CVE-2020-5642 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the Live Chat & AI Chatbot WordPress plugin, affecting versions <= 3.1.0. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 3.2.0; sites on affected versions should update now. Disclosed October 2020, reported by Yusuke Fukuda.

Vulnerability Overview

Cross-site request forgery (CSRF) vulnerability in Live Chat - Live support version 3.1.0 and earlier allows remote attackers to hijack the authentication of administrators via unspecified vectors.

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 privileges on the target site. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-352: Cross-Site Request Forgery (CSRF)

Reaching this weakness in Live Chat & AI Chatbot <= 3.1.0 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For Live Chat & AI Chatbot the fix is 3.2.0: builds <= 3.1.0 are affected, anything from 3.2.0 onward is not.

Remediation

Update to version 3.2.0, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Live Chat & AI Chatbot: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Live Chat & AI Chatbot 3.2.0 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-5642 https://www.wordfence.com/threat-intel/vulnerabilities/id/b17d1280-2bae-4c45-b2e1-fbfcb2c7c15b https://nvd.nist.gov/vuln/detail/CVE-2020-5642

CVSS Vector

8.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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