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

2020-10-29 00:00

Omar Ganiev

Strategic Overview

Status

Patched in 3.7.35

Affected CoreWordPress 5.5

Affected Version3.7 – 5.5.1 · 20 branches

CVSS4.8Medium

CVECVE-2020-28037

View all WordPress 5.5 vulnerabilities

Vulnerability Overview

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).

Technical Analysis

REMEDIATION: Update to one of the following versions, or a newer patched version: 3.7.35, 3.8.35, 3.9.33, 4.0.32, 4.1.32, 4.2.29, 4.3.25, 4.4.24, 4.5.23, 4.6.20, 4.7.19, 4.8.15, 4.9.16, 5.0.11, 5.1.7, 5.2.8, 5.3.5, 5.4.3, 5.5.2 --- IDENTIFIER: CWE-285 (Improper Authorization) The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

External References

https://www.cve.org/CVERecord?id=CVE-2020-28037 https://www.wordfence.com/threat-intel/vulnerabilities/id/b13f6a3f-cab6-4aff-a96e-58250fcf655a

CVSS Vector

4.8

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Base

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityLow

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