Vulnerability · Published Aug 24, 2021 · Assigned by apache

CVE-2021-33191MiNiFi CPP arbitrary script execution is possible on the agent's host machine through the c2 protocol

Critical 9.8

In plain English

A critical-severity OS command injection in Apache NiFi - MiNiFi C++ from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.0% (higher than 91% of all known vulnerabilities).

Severity (CVSS NVD)9.8Critical

Exploit odds (30 days)4.0%top 9.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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

Affected products (as reported)

Vendor	Product	Versions
Apache Software Foundation	Apache NiFi - MiNiFi C++	0.5.0 – before Apache NiFi - MiNiFi C++*

Weakness: CWE-78

References

https://www.openwall.com/lists/oss-security/2021/08/24/1 x_refsource_MISC
[oss-security] 20210824 CVE-2021-33191: Apache NiFi - MiNiFi C++: MiNiFi CPP arbitrary script execution is possible on the agent's host machine through the c2 protocol mailing-list, x_refsource_MLIST
[announce] 20210824 CVE-2021-33191: Apache NiFi - MiNiFi C++: MiNiFi CPP arbitrary script execution is possible on the agent's host machine through the c2 protocol mailing-list, x_refsource_MLIST