Is CVE-2021-33191 in the CISA KEV catalog?

No. CVE-2021-33191 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-33191?

CVE-2021-33191 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-33191?

CVE-2021-33191 has an EPSS score of 4.02% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-33191?

Upgrade nifi minifi c\+\+ to 0.10.0 or later.

CVE & CISA-KEV Catalog

CVE-2021-33191

CRITICALEPSS 89th pctl

9.8

CVSS v3

NVD

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

CWE-78OS Command Injection

How to fix

Remediation Available

nifi minifi c\+\+NVD

Affected:>= 0.5.0, < 0.10.0Fixed in:0.10.0CVE-2021-33191derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

4.02%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Third-Party Advisory2

Other references1

lists.apache.org

Related Vulnerabilities

Other CWE-78 (OS Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2014-6271	Critical	9.8	100%	KEV	Fix
CVE-2019-16920	Critical	9.8	100%	KEV	-
CVE-2022-44877	Critical	9.8	100%	KEV	Fix
CVE-2020-8515	Critical	9.8	100%	KEV	-
CVE-2020-9054	Critical	9.8	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.