CVE-2020-9491

Description

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 cluster request replication, Site-to-Site, and load balanced queues continued to support TLS v1.0 or v1.1.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.83% Top 15%
Vendor Advisory apache.org
Affected: n/a Apache NiFi
Published at:
Updated at:

References

Link Tags
https://nifi.apache.org/security#CVE-2020-9491 vendor advisory
https://lists.apache.org/thread.html/re48582efe2ac973f8cff55c8b346825cb491c71935e15ab2d61ef3bf%40%3Ccommits.nifi.apache.org%3E mailing list
https://lists.apache.org/thread.html/r2d9c21f9ec35d66f2bb42f8abe876dabd786166b6284e9a33582c718%40%3Ccommits.nifi.apache.org%3E mailing list

Frequently Asked Questions

What is the severity of CVE-2020-9491?
CVE-2020-9491 has been scored as a high severity vulnerability.
How to fix CVE-2020-9491?
To fix CVE-2020-9491, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-9491 being actively exploited in the wild?
It is possible that CVE-2020-9491 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-9491?
CVE-2020-9491 affects n/a Apache NiFi.
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