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

2017-01-11 00:00

Jack

Strategic Overview

Status

Patched in 3.7.17

Affected CoreWordPress 4.7

Affected Version3.7 – 4.7.0 · 12 branches

CVSS5.3Medium

CVECVE-2017-5493

View all WordPress 4.7 vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to one of the following versions, or a newer patched version: 3.7.17, 3.8.17, 3.9.15, 4.0.14, 4.1.14, 4.2.11, 4.3.7, 4.4.6, 4.5.5, 4.6.2, 4.7.1 --- IDENTIFIER: CWE-338 (Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)) The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong.

External References

https://www.cve.org/CVERecord?id=CVE-2017-5493 https://www.wordfence.com/threat-intel/vulnerabilities/id/14b7fd1e-6e2d-49bb-8492-b072afeebd88

CVSS Vector

5.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityNone

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