CVE-2022-23808: 
PHP vulnerability analysis and mitigation

CVE-2022-23808 is a vulnerability discovered in phpMyAdmin 5.1 before version 5.1.2, disclosed on January 21, 2022. The vulnerability affects the setup script of phpMyAdmin, a popular free and open-source administration tool for MySQL and MariaDB databases (MITRE CVE, NVD).

The vulnerability allows attackers to inject malicious code into aspects of the setup script, potentially leading to Cross-Site Scripting (XSS) or HTML injection attacks. The vulnerability has been assigned a CVSS 3.1 base score of 6.1 (Medium), with the following vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. The attack vector is network-based, requires low complexity, needs no privileges, but does require user interaction (Ubuntu).

If exploited, this vulnerability could allow attackers to perform XSS or HTML injection attacks through the phpMyAdmin setup script. The impact primarily affects confidentiality and integrity with low severity, while availability remains unaffected. A mitigating factor is that phpMyAdmin installations with a configuration file 'config.inc.php' will not allow access to the setup script, which helps prevent this attack (phpMyAdmin Security).

The recommended mitigation is to upgrade to phpMyAdmin version 5.1.2 or newer. The vulnerability has been patched through two specific commits: 5118acce1dfcdb09cbc0f73927bf51c46feeaf38 and 44eb12f15a562718bbe54c9a16af91ceea335d59. For systems that cannot be immediately upgraded, having a configuration file 'config.inc.php' in place will prevent access to the setup script, effectively mitigating the vulnerability (phpMyAdmin Security).