CVE-2021-33191 : From Apache NiFi MiNiFi C++ version 0.5.0 the c2 protocol implements an "agent-u

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

Published 2021-08-24 12:15:07

Updated 2021-08-31 11:15:18

Source Apache Software Foundation

View at NVD, CVE.org

Products affected by CVE-2021-33191

Apache » Nifi Minifi C++
Versions from including (>=) 0.5.0 and before (<) 0.10.0
cpe:2.3:a:apache:nifi_minifi_c\+\+:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-33191

EPSS FAQ

6.75%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 91 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-33191

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2021-33191

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product 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.
Assigned by:
- nvd@nist.gov (Primary)
- security@apache.org (Secondary)

References for CVE-2021-33191

https://www.openwall.com/lists/oss-security/2021/08/24/1

oss-security - 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;Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/08/24/1

oss-security - 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;Third Party Advisory
https://lists.apache.org/thread.html/r6f27a2454f5f67dbe4e21c8eb1db537b01863a0bc3758f28aa60f032@%3Cannounce.apache.org%3E

CVE-2021-33191: Apache NiFi - MiNiFi C++: MiNiFi CPP arbitrary script execution is possible on the agent's host machine through the c2 protocol - Pony Mail
Mailing List;Vendor Advisory

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Vulnerability Details : CVE-2021-33191

Products affected by CVE-2021-33191

Exploit prediction scoring system (EPSS) score for CVE-2021-33191

CVSS scores for CVE-2021-33191

CWE ids for CVE-2021-33191

References for CVE-2021-33191