9.8
CVE-2022-23131
- EPSS 94.3%
- Published 13.01.2022 16:15:08
- Last modified 12.03.2025 21:01:16
- Source security@zabbix.com
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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).
Data is provided by the National Vulnerability Database (NVD)
22.02.2022: CISA Known Exploited Vulnerabilities (KEV) Catalog
Zabbix Frontend Authentication Bypass Vulnerability
VulnerabilityUnsafe client-side session storage leading to authentication bypass/instance takeover via Zabbix Frontend with configured SAML.
DescriptionApply updates per vendor instructions.
Required actions| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 94.3% | 0.999 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 9.8 | 3.9 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
|
| nvd@nist.gov | 5.1 | 4.9 | 6.4 |
AV:N/AC:H/Au:N/C:P/I:P/A:P
|
| security@zabbix.com | 9.1 | 3.9 | 5.2 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
|
CWE-290 Authentication Bypass by Spoofing
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.