Registrations for the Events Calendar <= 2.7.5 - Unauthenticated SQL Injection

2021-11-08 00:00

Krzysztof Zając

Strategic Overview

Status

Patched in 2.7.6

Affected PluginRegistrations for the Events Calendar – Event Registration Plugin

Affected Version< 2.7.6

CVSS9.8Critical

CVECVE-2021-24943

View all Registrations for the Events Calendar – Event Registration Plugin vulnerabilities

Vulnerability Overview

The Registrations for the Events Calendar WordPress plugin before 2.7.6 does not sanitise and escape the event_id in the rtec_send_unregister_link AJAX action (available to both unauthenticated and authenticated users) before using it in a SQL statement, leading to an unauthenticated SQL injection.

Technical Analysis

REMEDIATION: Update to version 2.7.6, or a newer patched version --- IDENTIFIER: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')) The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24943 https://www.wordfence.com/threat-intel/vulnerabilities/id/b8c18081-1ee3-4072-89f1-b6eb1518916e

CVSS Vector

9.8

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

Base

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

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