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.

The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4843-1 advisory.

    Javier Nieto and Andres Rojas discovered that phpMyAdmin incorrectly managed input in the form of     passwords. An attacker could use this vulnerability to cause a denial-of-service (DoS). This issue only     affected Ubuntu 14.04 ESM. (CVE-2014-9218)

    Emanuel Bronshtein discovered that phpMyAdmin failed to properly sanitize input in the form of database     names in the PHP Array export feature. An authenticated attacker could use this vulnerability to run     arbitrary PHP commands. This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2016-6609)

    Emanuel Bronshtein discovered that phpMyAdmin failed to properly sanitize input. An attacker could use     this vulnerability to execute SQL injection attacks. This issue only affected Ubuntu 14.04 ESM and Ubuntu     16.04 ESM. (CVE-2016-6619)

    Emanuel Bronshtein discovered that phpMyadmin failed to properly sanitize input. An authenticated attacker     could use this vulnerability to cause a denial-of-service (DoS). This issue only affected Ubuntu 14.04 ESM     and Ubuntu 16.04 ESM. (CVE-2016-6630)

    Emanuel Bronshtein discovered that phpMyAdmin failed to properly sanitize input. An attacker could use     this vulnerability to bypass AllowRoot restrictions and deny rules for usernames. This issue only affected     Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2016-9849)

    Emanuel Bronshtein discovered that phpMyAdmin would allow sensitive information to be leaked when the     argument separator in a URL was not the default & value. An attacker could use this vulnerability to     obtain the CSRF token of a user. This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
    (CVE-2016-9866)

    Isaac Bennetch discovered that phpMyAdmin was incorrectly restricting user access due to the behavior of     the substr function on some PHP versions. An attacker could use this vulnerability to bypass login     restrictions established for users that have no password set. This issue only affected Ubuntu 14.04 ESM.
    This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2017-18264)

    Emanuel Bronshtein discovered that phpMyAdmin failed to properly sanitize input in the form of parameters     sent during a table editing operation. An attacker could use this vulnerability to trigger an endless     recursion and cause a denial-of-service (DoS). This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04     ESM. (CVE-2017-1000014)

    Emanuel Bronshtein discovered that phpMyAdmin failed to properly sanitize input used to generate a web     page. An authenticated attacker could use this vulnerability to execute CSS injection attacks. This issue     only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2017-1000015)

    It was discovered that phpMyAdmin incorrectly handled certain input. An attacker could use this     vulnerability to execute a cross-site scripting (XSS) attack via a crafted URL. This issue only affected     Ubuntu 16.04 ESM. (CVE-2018-7260)

    It was discovered phpMyAdmin incorrectly handled database names. An attacker could possibly use this to     trigger a cross-site scripting attack. This issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 ESM.
    (CVE-2018-12581)

    Daniel Le Gall discovered that phpMyAdmin would expose sensitive information to unauthorized actors due to     an error in its transformation feature. An authenticated attacker could use this vulnerability to leak the     contents of a local file. This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2018-19968)

    It was discovered that phpMyAdmin incorrectly handled user input. An attacker could possibly use this to     perform a cross-site scripting attack. This issue only affected Ubuntu 16.04 ESM. (CVE-2018-19970)

    It was discovered that phpMyAdmin failed to properly sanitize input. An attacker could use this     vulnerability to execute an SQL injection attack via a specially crafted database name. This issue only     affected Ubuntu 16.04 ESM. (CVE-2019-11768)

    It was discovered that phpMyAdmin incorrectly handled some requests. An attacker could possibly use this     to perform a cross site request forgery attack. This issue only affected Ubuntu 16.04 ESM.
    (CVE-2019-12616)

    It was discovered that phpMyAdmin incorrectly handled some requests. An attacker could possibly use this     to perform a cross site request forgery attack. This issue only affected Ubuntu 14.04 ESM and Ubuntu 18.04     ESM. (CVE-2019-12922)

    It was discovered that phpMyAdmin failed to properly sanitize input. An attacker could use this     vulnerability to execute an SQL injection attack via a specially crafted username. This issue only     affected Ubuntu 16.04 ESM. (CVE-2019-6798)

    It was discovered that phpMyAdmin did not properly sanitize certain input. An attacker could use this     vulnerability to possibly execute an HTML injection or a cross-site scripting (XSS) attack. This issue     only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2019-19617)

    CSW Research Labs discovered that phpMyAdmin failed to properly sanitize input.

    An attacker could use this vulnerability to execute SQL injection attacks. This issue only affected Ubuntu     16.04 ESM. (CVE-2020-5504)

    Giwan Go and Yelang Lee discovered that phpMyAdmin was vulnerable to an XSS attack in the transformation     feature. If a victim were to click on a crafted link, an attacker could run malicious JavaScript on the     victim's system. This issue only affected Ubuntu 20.04 ESM. (CVE-2020-26934)

    Andre S discovered that phpMyAdmin incorrectly handled certain SQL statements in the search feature. A     remote, authenticated attacker could use this to inject malicious SQL into a query. This issue only     affected Ubuntu 20.04 ESM. (CVE-2020-26935)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Several vulnerabilities were found in phpMyAdmin, the web-based MySQL administration interface, including SQL injection attacks, denial of service, arbitrary code execution, cross-site scripting, server-side request forgery, authentication bypass, and file system traversal.

For Debian 8 'Jessie', these problems have been fixed in version 4:4.2.12-2+deb8u3.

We recommend that you upgrade your phpmyadmin packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
183178	Ubuntu 16.04 ESM / 18.04 ESM / 20.04 ESM : phpMyAdmin vulnerabilities (USN-4843-1)	Nessus	Ubuntu Local Security Checks	critical
110945	Debian DLA-1415-1 : phpmyadmin security update	Nessus	Debian Local Security Checks	critical

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CVE-2017-18264

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