CVE-2022-1209

Ultimate Member <= 2.3.1 - Arbitrary Redirect

2022-04-29 00:00

Strategic Overview

Status: Patched in 2.3.2
Affected Plugin: Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin
Affected Version: <= 2.3.1
CVSS: 4.3Medium
Weakness type: CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
CVE: CVE-2022-1209

View all Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin vulnerabilities

At a glance

CVE-2022-1209 is a medium-severity URL Redirection to Untrusted Site ('Open Redirect') vulnerability in the Ultimate Member WordPress plugin, affecting versions <= 2.3.1. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.3.2; sites on affected versions should update now. Disclosed April 2022, reported by Ruijie Li.

Vulnerability Overview

The Ultimate Member plugin for WordPress is vulnerable to arbitrary redirects due to insufficient validation on supplied URLs in the social fields of the Profile Page, which makes it possible for attackers to redirect unsuspecting victims in versions up to, and including, 2.3.1.

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.

CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

Reaching this weakness in Ultimate Member <= 2.3.1 takes a caller who can reach the endpoint. An open redirect is a page that takes a destination from the request and sends the browser there without checking that the destination belongs to the site.

A link that starts on a trusted domain finishes on an attacker's, which is what makes phishing and consent-screen abuse credible to the person clicking it. For Ultimate Member the fix is 2.3.2: builds <= 2.3.1 are affected, anything from 2.3.2 onward is not.

Remediation

Update to version 2.3.2, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Ultimate Member: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Ultimate Member 2.3.2 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-1209 https://www.wordfence.com/threat-intel/vulnerabilities/id/d638120b-5396-408b-8273-d003ff9dd01d https://nvd.nist.gov/vuln/detail/CVE-2022-1209

Related records

Same weakness class

6.1Ultimate Member <= 2.1.6 Open Redirect

Other vulnerabilities in Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin

CVSS Vector

4.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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