CVE-2020-1942 Insertion of Sensitive Information into Log File in Apache NiFi

What is CVE-2020-1942?

CVE-2020-1942 is a high-severity vulnerability in Apache Nifi, published on 11 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Apache NiFi 0.0.1 to 1.11.0, the flow fingerprint factory generated flow fingerprints which included sensitive property descriptor values. In the event a node attempted to join a cluster and the cluster flow was not inheritable, the flow fingerprint of both the cluster and local flow was printed, potentially containing sensitive values in plaintext.

Weakness: CWE-532

Which versions are affected by CVE-2020-1942?

5 open source packages ship an affected version, including org.apache.nifi:nifi-framework-core, nifi and org.apache.nifi:nifi-security-utils. It affects 1 product.

Products include Apache Nifi.

How do I fix CVE-2020-1942?

Upgrade org.apache.nifi:nifi-framework-core to 1.12.0-RC1 or later.

Is CVE-2020-1942 being exploited?

There is no known exploitation of CVE-2020-1942 in the wild and no public exploit code.

Other vulnerabilities in Apache Nifi

• CVE-2018-1309 Improper Restriction of XML External Entity Reference in Apache NiFi Critical 9.8
• CVE-2017-15697 Apache NiFi XSS issue in context path handling Critical 9.8
• CVE-2017-5636 Injection in Apache NiFi Critical 9.8
• CVE-2026-68981 Apache NiFi: Uncontrolled Resource Consumption through Decompression of HTTP Requests High 8.8
• CVE-2023-36542 Apache NiFi: Potential Code Injection with Properties Referencing Remote Resources High 8.8

All Apache Nifi vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-nifi-2020-1942, GHSA-7q8g-gpfp-v8gx.