CVE-2021-33191 is a vulnerability in Apache Nifi Minifi C
Published on August 24, 2021
MiNiFi CPP arbitrary script execution is possible on the agent's host machine through the c2 protocol
From Apache NiFi MiNiFi C++ version 0.5.0 the c2 protocol implements an "agent-update" command which was designed to patch the application binary. This "patching" command defaults to calling a trusted binary, but might be modified to an arbitrary value through a "c2-update" command. Said command is then executed using the same privileges as the application binary. This was addressed in version 0.10.0
Weakness Type
What is a Shell injection Vulnerability?
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
CVE-2021-33191 has been classified to as a Shell injection vulnerability or weakness.
Products Associated with CVE-2021-33191
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Affected Versions
Apache Software Foundation Apache NiFi - MiNiFi C++:- Version 0.5.0 and below Apache NiFi - MiNiFi C++* is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.