Appointments <= 2.2.1 - Unauthenticated PHP Object Injection

2017-10-02 00:00

Matt Barry

Strategic Overview

Status

Patched in 2.2.2

Affected PluginAppointments

Affected Version< 2.2.2

CVSS9.8Critical

CVECVE-2017-20206

View all Appointments vulnerabilities

Vulnerability Overview

The Appointments plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 2.2.1 via deserialization of untrusted input from the `wpmudev_appointments` cookie. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this vulnerability with the WP_Theme() class to create backdoors.

Technical Analysis

REMEDIATION: Update to version 2.2.2, or a newer patched version --- IDENTIFIER: CWE-502 (Deserialization of Untrusted Data) The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

External References

https://www.cve.org/CVERecord?id=CVE-2017-20206 https://www.wordfence.com/threat-intel/vulnerabilities/id/7e8f230e-3f96-4efd-806d-72725b960303

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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