CVE-2017-5493

WordPress Core < 4.7.1 - Weak Multi-Site Activation Key for User and Site Signup

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

wp-includes/ms-functions.php in the Multisite WordPress API in WordPress before 4.7.1 does not properly choose random numbers for keys, which makes it easier for remote attackers to bypass intended access restrictions via a crafted (1) site signup or (2) user signup.

wp-includes/ms-functions.php en la API Multisite WordPress en WordPress en versiones anteriores a 4.7.1 no elige adecuadamente los números aleatorios para claves, lo que hace que más fácil para atacantes remotos eludir las restricciones destinadas al acceso a través de una inscripción del (1) sitio o (2) usuario manipulado.

Several vulnerabilities were discovered in wordpress, a web blogging tool. They would allow remote attackers to hijack victims' credentials, access sensitive information, execute arbitrary commands, bypass read and post restrictions, or mount denial-of-service attacks.

*Credits: Jack

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-01-11 CVE Published
2017-01-14 CVE Reserved
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

CAPEC

References (8)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2017/01/14/6	Mailing List
http://www.securityfocus.com/bid/95401	Vdb Entry
http://www.securitytracker.com/id/1037591	Vdb Entry
https://wpvulndb.com/vulnerabilities/8721	X_refsource_misc

URL	Date	SRC

URL	Date	SRC
https://github.com/WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4	2019-10-03

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3779	2019-10-03
https://codex.wordpress.org/Version_4.7.1	2019-10-03
https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release	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"				<= 4.7 Search vendor "Wordpress" for product "Wordpress" and version " <= 4.7"		-		Affected