UBUNTU-CVE-2017-18264

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    UBUNTU-CVE-2017-18264

    Published: 1 May 2018Last Modified: 4 Feb 2026
    Upstream:
    CVE-2017-18264
    Aliases:
    USN-4843-1

    Summary:

    Details: 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.

    References: https://ubuntu.com/security/CVE-2017-18264, https://www.phpmyadmin.net/security/PMASA-2017-8/, https://github.com/phpmyadmin/phpmyadmin/commit/7232271a379396ca1d4b083af051262057003c41, https://github.com/phpmyadmin/phpmyadmin/commit/b6ca92cc75c8a16001425be7881e73430bcc35b8, https://www.cve.org/CVERecord?id=CVE-2017-18264, https://ubuntu.com/security/notices/USN-4843-1

    Affected packages

    Package

    Name: phpmyadmin

    Purl: pkg:deb/ubuntu/phpmyadmin@4:4.0.10-1ubuntu0.1+esm4?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4:4.0.10-1ubuntu0.1+esm4

    Affected versions

    4:4.0.6-1
    4:4.0.8-1
    4:4.0.9-1
    4:4.0.10-1
    4:4.0.10-1ubuntu0.1
    4:4.0.10-1ubuntu0.1+esm1
    4:4.0.10-1ubuntu0.1+esm2
    4:4.0.10-1ubuntu0.1+esm3

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High