PT-2020-5779 · WordPress · Wordpress

Published 2020-10-15 · Updated 2024-03-06 · CVE-2020-28037

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions: WordPress versions prior to 5.5.2

Description: The issue is related to the is blog installed function in wp-includes/functions.php, which improperly checks if WordPress is already installed. This could allow a remote attacker to perform a new installation, leading to remote code execution and potentially causing a denial of service for the old installation.

Recommendations: For versions prior to 5.5.2, update to version 5.5.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the is blog installed function in wp-includes/functions.php to minimize the risk of exploitation.

Fix

DoS

RCE

Improper Check for Exceptional Conditions

Weakness Enumeration

CWE-754

CWE-20

Related Identifiers

BDU:2021-01738

BIT-WORDPRESS-2020-28037

BIT-WORDPRESS-MULTISITE-2020-28037

CVE-2020-28037

DLA-2429-1

DSA-4784-1

Affected Products

Wordpress

References · 25

• https://github.com/WordPress/wordpress-develop/commit/2ca15d1e5ce70493c5c0c096ca0c76503d6da07c · Patch
• https://bdu.fstec.ru/vul/2021-01738 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-28037 · Vendor Advisory
• https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release · Vendor Advisory
• https://debian.org/security/2020/dsa-4784 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBGWMQDEG244 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/VAVVYJKA2I6CRQUINECDPBGWMQDEG244 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-28037 · Security Note
• https://ubuntu.com/security/CVE-2020-28037 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2429-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-28037 · Vendor Advisory