CVE-2020-28037 : is_blog_installed in wp-includes/functions.php in WordPress before 5.5.2 improperly determines whether WordPress is alre

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).

Published 2020-11-02 21:15:31

Updated 2022-04-28 18:24:29

Source MITRE

View at NVD, CVE.org

Vulnerability category: Execute codeDenial of service

Threat overview for CVE-2020-28037

Top countries where our scanners detected CVE-2020-28037

Top open port discovered on systems with this issue 80

IPs affected by CVE-2020-28037 10

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2020-28037!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2020-28037

Probability of exploitation activity in the next 30 days: 2.42%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 89 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2020-28037

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2020-28037

CWE-754 Improper Check for Unusual or Exceptional Conditions

The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-28037

https://www.debian.org/security/2020/dsa-4784

Debian -- Security Information -- DSA-4784-1 wordpress
Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y/

[SECURITY] Fedora 33 Update: wordpress-5.5.3-1.fc33 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/

News – WordPress 5.5.2 Security and Maintenance Release – WordPress.org
Release Notes;Vendor Advisory

CVEs referencing this url
https://wpscan.com/vulnerability/10450

WordPress < 5.5.2 - Unauthenticated DoS Attack to RCE
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00004.html

[SECURITY] [DLA 2429-1] wordpress security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3/

[SECURITY] Fedora 32 Update: wordpress-5.5.3-1.fc32 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBGWMQDEG244/

[SECURITY] Fedora 31 Update: wordpress-5.5.3-1.fc31 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://github.com/WordPress/wordpress-develop/commit/2ca15d1e5ce70493c5c0c096ca0c76503d6da07c

Upgrade/install: Improve logic check when determining installation st… · WordPress/wordpress-develop@2ca15d1 · GitHub
Patch;Third Party Advisory

Products affected by CVE-2020-28037