CVE-2020-28037

WordPress Core < 5.5.2 - Misconfiguration That Allows Trigger of New Installation

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

is_blog_installed in wp-includes/functions.php in WordPress before 5.5.2 improperly determines whether WordPress is already installed, which might allow an attacker to perform a new installation, leading to remote code execution (as well as a denial of service for the old installation).

La función is_blog_installed en el archivo wp-includes/functions.php en WordPress versiones anteriores a 5.5.2, determina inapropiadamente si WordPress ya está instalado, lo que podría permitir a un atacante llevar a cabo una nueva instalación, conllevando a una ejecución de código remota (así como a una denegación de servicio para una instalación antigua)

Several vulnerabilities were discovered in Wordpress, a web blogging tool. They allowed remote attackers to run insecure deserialization, embed spam, perform various Cross-Site Scripting (XSS) or Cross-Site Request Forgery (CSRF) attacks, escalate privileges, run arbitrary code, and delete arbitrary files.

*Credits: Omar Ganiev

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-29 CVE Published
2020-10-31 CVE Reserved
2024-08-04 CVE Updated
2025-04-02 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-285: Improper Authorization
CWE-754: Improper Check for Unusual or Exceptional Conditions

CAPEC

References (8)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2020/11/msg00004.html	Mailing List
https://wpscan.com/vulnerability/10450	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/WordPress/wordpress-develop/commit/2ca15d1e5ce70493c5c0c096ca0c76503d6da07c	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBGWMQDEG244	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y	2023-11-07
https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release	2023-11-07
https://www.debian.org/security/2020/dsa-4784	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				< 5.5.2 Search vendor "Wordpress" for product "Wordpress" and version " < 5.5.2"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				31 Search vendor "Fedoraproject" for product "Fedora" and version "31"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected