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Known exploited vulnerability

CVE-2022-23131

criticalCVSS 3.1 9.8In CISA KEVEPSS 96%Published · Zabbix

The short answer

CVE-2022-23131 affects Zabbix Frontend and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-02-22: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

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.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Feb 22, 2022

Federal due date Mar 8, 2022

EPSS, next 30 days

96%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

Frontend. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2022-23131 being exploited?

Yes. CISA added CVE-2022-23131 to its Known Exploited Vulnerabilities catalog on 2022-02-22, with a federal remediation due date of 2022-03-08.

How do I fix CVE-2022-23131?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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