Ultimate WordPress Auction Plugin < 1.0.1 - Cross-Site Request Forgery

2013-06-17 00:00

Strategic Overview

Status: Patched in 1.0.1
Affected Plugin: Ultimate WordPress Auction Plugin
Affected Version: < 1.0.1
CVSS: 8.8High
Weakness type: CWE-352 · Cross-Site Request Forgery (CSRF)
CVE: CVE pending

View all Ultimate WordPress Auction Plugin vulnerabilities

At a glance

This record tracks a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the Ultimate WordPress Auction Plugin WordPress plugin, affecting versions < 1.0.1. 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 1.0.1; sites on affected versions should update now. Disclosed June 2013, reported by expl0i13r.

Vulnerability Overview

The "Ultimate WordPress Auction Plugin" plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions before 1.0.1. This is due to missing or incorrect nonce validation on the ua_wdm_add_auc function. This makes it possible for unauthenticated attackers to add fake auction bids via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

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 Ultimate WordPress Auction Plugin < 1.0.1 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 Ultimate WordPress Auction Plugin the fix is 1.0.1: builds < 1.0.1 are affected, anything from 1.0.1 onward is not.

Remediation

Update to version 1.0.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Ultimate WordPress Auction Plugin: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Ultimate WordPress Auction Plugin 1.0.1 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/c01bce24-3563-40bd-83c5-8d54bd622151

Related records

Same weakness class

Other vulnerabilities in Ultimate WordPress Auction Plugin

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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