CVE-2017-5493

HIGH

WordPress < 4.7 - Use of Cryptographically Weak PRNG in Multisite Signup Keys

Title source: llm
STIX 2.1

Description

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.

References (8)

Core 8
Core References
Third Party Advisory x_refsource_misc
https://wpvulndb.com/vulnerabilities/8721
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/95401
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2017/dsa-3779
Release Notes, Vendor Advisory x_refsource_confirm
https://codex.wordpress.org/Version_4.7.1
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2017/01/14/6
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1037591

Scores

CVSS v3 7.5
EPSS 0.0289
EPSS Percentile 85.0%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-338
Status published
Products (1)
wordpress/wordpress < 4.7
Published Jan 15, 2017
Tracked Since Feb 18, 2026