CVE-2017-18264 Information

Description

An issue was discovered in libraries/common.inc.php in phpMyAdmin 4.0 before 4.0.10.20 4.4.x 4.6.x and 4.7.0 prereleases. The restrictions caused by $cfg[‘Servers’][$i][‘AllowNoPassword’] = false are bypassed under certain PHP versions (e.g. version 5). This can allow the login of users who have no password set even if the administrator has set $cfg[‘Servers’][$i][‘AllowNoPassword’] to false (which is also the default). This occurs because some implementations of the PHP substr function return false when given ’’ as the first argument.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/97211 https://lists.debian.org/debian-lts-announce/2018/07/msg00006.html https://www.phpmyadmin.net/security/PMASA-2017-8/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8