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CVE-2021-33191

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

CRITICAL
9.8
CVSS Score
Published: August 24, 2021 at 11:20 AM UTC
Updated: June 17, 2026 at 03:54 AM UTC
1 product affected across 1 vendorNifi Minifi C++

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Severity
CRITICAL9.8
Exploit prediction
EPSS 4%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Nifi Minifi C++· Apache
95%
0.5.0 ≤ v < 0.10.00.5.0 ≤ v < Apache NiFi - MiNiFi C++*0.5.0
Affected range stops below 0.10.0, so it looks safe — our inference, not a vendor statement
Affected range stops below Apache NiFi - MiNiFi C++*, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/08/24/1
Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/r6f27a2454f5f67dbe4e21c8eb1db537b01863a0bc3758f28aa60f032%40%3Cannounce.apache.org%3E
x_refsource_MISCMailing ListThird Party Advisory
Source: [email protected]
https://www.openwall.com/lists/oss-security/2021/08/24/1

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-78

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