PT-2020-5777 · WordPress · Wordpress

Published 2020-10-15 · Updated 2024-03-06 · CVE-2020-28039

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/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 protected meta function in the wp-includes/meta.php component of the WordPress content management system. This function incorrectly determines the protection status of a meta key. Exploitation of this issue can allow a remote attacker to compromise data integrity and cause a denial of service. The vulnerability can lead to arbitrary file deletion because it does not properly determine whether a meta key is considered protected.

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 protected meta function in wp-includes/meta.php to minimize the risk of exploitation.

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

BDU:2021-01736

BIT-WORDPRESS-2020-28039

BIT-WORDPRESS-MULTISITE-2020-28039

CVE-2020-28039

DLA-2429-1

DSA-4784-1

Affected Products

Wordpress

References · 25

• https://github.com/WordPress/wordpress-develop/commit/d5ddd6d4be1bc9fd16b7796842e6fb26315705ad · Patch
• https://osv.dev/vulnerability/BIT-wordpress-multisite-2020-28039 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4784-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-28039 · Security Note
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2429-1 · 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://security-tracker.debian.org/tracker/CVE-2020-28039 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-wordpress-2020-28039 · 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/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-28039 · Security Note
• 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