CVE-2017-18264

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.

9.8

CVSS

Severity: Critical

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.54%

Vendor Advisory phpmyadmin.net

Affected: n/a n/a

References

Link	Tags
https://www.phpmyadmin.net/security/PMASA-2017-8/	patch vendor advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00006.html	third party advisory mailing list
http://www.securityfocus.com/bid/97211	third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2017-18264?: CVE-2017-18264 has been scored as a critical severity vulnerability.
How to fix CVE-2017-18264?: To fix CVE-2017-18264, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-18264 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2017-18264 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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