CVE-2022-23134
Zabbix Frontend Improper Access Control Vulnerability
Zabbix Frontend
After the initial setup process, some steps of setup.php file are reachable not only by super-administrators, but by unauthenticated users as well. Malicious actor can pass step checks and potentially change the configuration of Zabbix Frontend.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 22 February 2022. US federal agencies were required to remediate it by 8 March 2022.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 95.3%, which is higher than 99.9% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Frequently asked questions
Is CVE-2022-23134 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2022-23134.
What does CVE-2022-23134 affect?
CVE-2022-23134 affects Zabbix Frontend. After the initial setup process, some steps of setup.php file are reachable not only by super-administrators, but by unauthenticated users as well. Malicious actor can pass step checks and potentially change the configuration of Zabbix Frontend.
How severe is CVE-2022-23134?
CVE-2022-23134 is rated LOW with a CVSS base score of 3.7. EPSS puts the probability of exploitation in the next 30 days at 95.3%, higher than 99.9% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 8 March 2022.
How should organisations respond to CVE-2022-23134?
Apply the vendor patch for Zabbix Frontend as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.