CVE-2017-5493 Information

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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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

http://www.debian.org/security/2017/dsa-3779 http://www.openwall.com/lists/oss-security/2017/01/14/6 http://www.securityfocus.com/bid/95401 http://www.securitytracker.com/id/1037591 https://codex.wordpress.org/Version_4.7.1 https://github.com/WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4 https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/ https://wpvulndb.com/vulnerabilities/8721

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5