WordPress < 5.5.2 Multiple Vulnerabilities

critical Nessus Plugin ID 142420

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Synopsis

A PHP application running on the remote web server is affected by multiple vulnerabilities.

Description

According to its self-reported version number, the installation of WordPress installed on the remote host is affected by multiple vulnerabilities:

- A deserialization vulnerability exists in wp-includes/Requests/Utility/FilteredIterator.php. An unauthenticated, remote attacker can exploit this, by sending specially crafted serialized payloads to an affected instance, to execute arbitrary code on the target host (CVE-2020-28032).

- Multiple privilege escalation vulnerabilities exist in the XML-RPC component of Wordpress. An unauthenticated, remote attacker can exploit these, to gain privileged access to an affected host (CVE-2020-28035, CVE-2020-28036).

- A remote code execution vulnerability exists in the is_blog_installed function of wp-includes/functions.php. An unauthenticated, remote attacker can exploit this to bypass authentication and execute arbitrary commands (CVE-2020-28037). Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version

Solution

Upgrade to WordPress version 5.5.2 or later.

Plugin Details

Severity: Critical

ID: 142420

File Name: wordpress_5_5_2.nasl

Version: 1.6

Type: remote

Family: CGI abuses

Published: 11/4/2020

Updated: 6/6/2024

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Enable CGI Scanning: true

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2020-28037

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:wordpress:wordpress

Required KB Items: installed_sw/WordPress, www/PHP, Settings/ParanoidReport

Excluded KB Items: Settings/disable_cgi_scanning

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/29/2020

Vulnerability Publication Date: 10/29/2020

Reference Information

CVE: CVE-2020-28032, CVE-2020-28033, CVE-2020-28034, CVE-2020-28035, CVE-2020-28036, CVE-2020-28037, CVE-2020-28038, CVE-2020-28040

IAVA: 2020-A-0507-S

Detections

Analytics