CVE-2022-23131 Zabbix Frontend Authentication Bypass
Attackers can bypass authentication and gain admin access in Zabbix Frontend if SAML SSO is enabled, due to unverified session data.
- Exploited in the wild
- Since 22 Feb 2022
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-23131?
CVE-2022-23131 is a critical authentication bypass vulnerability in Zabbix Zabbix, published on 13 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the case of instances where the SAML SSO authentication is enabled (non-default), session data can be modified by a malicious actor, because a user login stored in the session was not verified. Malicious unauthenticated actor may exploit this issue to escalate privileges and gain admin access to Zabbix Frontend. To perform the attack, SAML authentication is required to be enabled and the actor has to know the username of Zabbix user (or use the guest account, which is disabled by default).
Weakness: CWE-290
Which versions are affected by CVE-2022-23131?
It affects 1 product.
Products include Zabbix Zabbix.
How do I fix CVE-2022-23131?
No fix has been published for CVE-2022-23131 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 8 Mar 2022.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2022-23131 being exploited?
Yes. Attackers have exploited CVE-2022-23131 in the wild since at least 22 Feb 2022.
Public exploit code: 1 Nuclei template and 20 proofs of concept on GitHub.
Other vulnerabilities in Zabbix Zabbix
Sources
Also known as GHSA-4g73-3mxf-j47w.