CVEvulnerability

CVE-2017-18264

9.8 CRITICAL Published 2018-05-01 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-05-01
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
9.8 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P

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.

Affected configurations

• phpmyadmin phpmyadmin (>= 4.0.0 < 4.0.10.20) • phpmyadmin phpmyadmin (>= 4.4.0 <= 4.4.15.10) • phpmyadmin phpmyadmin (>= 4.6.0 <= 4.6.6) • phpmyadmin phpmyadmin 4.7.0 • debian debian linux 8.0

References