Is CVE-2019-12421 in the CISA KEV catalog?

No. CVE-2019-12421 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-12421?

CVE-2019-12421 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2019-12421?

CVE-2019-12421 has an EPSS score of 1.85% (76th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2019-12421?

No published fix for CVE-2019-12421 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2019-12421

HIGHEPSS 76th pctl

8.8

CVSS v3

NVD

Description

When using an authentication mechanism other than PKI, when the user clicks Log Out in NiFi versions 1.0.0 to 1.9.2, NiFi invalidates the authentication token on the client side but not on the server side. This permits the user's client-side token to be used for up to 12 hours after logging out to make API requests to NiFi.

CWE-613

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.85%probability of exploitation in 30 days

76thpercentile

Elevated risk: more likely to be exploited than 76% of all known CVEs.

References

Vendor Advisory1

nifi.apache.org

Other references1

lists.apache.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.