CVE-2017-18264
9.8
CRITICAL · CVSS 3.0 · EPSS 2.8% (pctl 86)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 2.79% — more likely to be exploited than 86% of all CVEs |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2018-05-01 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| debian | debian linux |
| phpmyadmin | phpmyadmin |
References
- 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/
- 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/
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