What is CVE-2020-9491?

CVE-2020-9491 is a high-severity vulnerability in Apache Nifi, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2020-10-01.

How severe is CVE-2020-9491?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2020-9491 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Apache Nifi

CVE-2020-9491

In Apache NiFi 1.2.0 to 1.11.4, the NiFi UI and API were protected by mandating TLS v1.2, as well as listening connections established by processors like ListenHTTP, HandleHttpRequest, etc. However intracluster communication such as cluste…

Vulnerability class: POODLE (CVE-2014-3566)

EPSS: 0.029 (85.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Apache Nifi
N/a Apache Nifi — versions Apache NiFi 1.2.0 to 1.11.4

Weakness classification (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

Public proof-of-concept exploits

References

security@apache.org (x_refsource_MISC, Vendor Advisory)
security@apache.org (mailing-list, x_refsource_MLIST)
security@apache.org (mailing-list, x_refsource_MLIST)

Frequently asked questions

What is CVE-2020-9491?: CVE-2020-9491 is a high-severity vulnerability in Apache Nifi, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2020-10-01.
How severe is CVE-2020-9491?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2020-9491 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.