ElasticPress <= 3.5.3 - Cross-Site Request Forgery Bypass

2021-03-01 00:00

Jerome Bruandet

Strategic Overview

Status

Patched in 3.5.4

Affected PluginElasticPress

Affected Version<= 3.5.3

CVSS4.3Medium

CVECVE-2021-4405

View all ElasticPress vulnerabilities

Vulnerability Overview

The ElasticPress plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.5.3. This is due to missing or incorrect nonce validation on the epio_send_autosuggest_allowed() function. This makes it possible for unauthenticated attackers to send allowed parameters for autosuggest to elasticpress[.]io via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Technical Analysis

REMEDIATION: Update to version 3.5.4, or a newer patched version --- IDENTIFIER: CWE-352 (Cross-Site Request Forgery (CSRF)) The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

External References

https://www.cve.org/CVERecord?id=CVE-2021-4405 https://www.wordfence.com/threat-intel/vulnerabilities/id/8ab8eb9d-1427-4e99-8986-179147e0862e

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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