CVE-2017-17091

WordPress Core < 4.9.1 - Authorization Bypass

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

wp-admin/user-new.php in WordPress before 4.9.1 sets the newbloguser key to a string that can be directly derived from the user ID, which allows remote attackers to bypass intended access restrictions by entering this string.

wp-admin/user-new.php en WordPress en versiones anteriores a la 4.9.1 establece la clave newbloguser a una cadena que se puede derivar directamente del ID de usuario, lo que permite que los atacantes remotos omitan las restricciones de acceso planeadas introduciendo esta cadena.

Several vulnerabilities were discovered in Wordpress, a web blogging tool. They allowed remote attackers to perform SQL injections and various Cross-Side Scripting (XSS) and Server-Side Request Forgery (SSRF) attacks, as well as bypass some access restrictions.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-11-29 CVE Published
2017-12-02 CVE Reserved
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-285: Improper Authorization
CWE-330: Use of Insufficiently Random Values

CAPEC

References (7)

URL	Tag	Source
http://www.securityfocus.com/bid/102024	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00019.html	Mailing List
https://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-release	Release Notes
https://wpvulndb.com/vulnerabilities/8969	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://codex.wordpress.org/Version_4.9.1	2019-10-03
https://github.com/WordPress/WordPress/commit/eaf1cfdc1fe0bdffabd8d879c591b864d833326c	2019-10-03

URL	Date	SRC
https://www.debian.org/security/2018/dsa-4090	2019-10-03

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"				<= 4.9 Search vendor "Wordpress" for product "Wordpress" and version " <= 4.9"		-		Affected