Is CVE-2021-3840 in the CISA KEV catalog?

No. CVE-2021-3840 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3840?

CVE-2021-3840 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-3840?

CVE-2021-3840 has an EPSS score of 1.97% (78th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3840?

Upgrade antilles to 1.0.1 or later.

CVE & CISA-KEV Catalog

CVE-2021-3840

HIGHEPSS 78th pctl

8.8

CVSS v3

NVD

Description

A dependency confusion vulnerability was reported in the Antilles open-source software prior to version 1.0.1 that could allow for remote code execution during installation due to a package listed in requirements.txt not existing in the public package index (PyPi). MITRE classifies this weakness as an Uncontrolled Search Path Element (CWE-427) in which a private package dependency may be replaced by an unauthorized package of the same name published to a well-known public repository such as PyPi. The configuration has been updated to only install components built by Antilles, removing all other public package indexes. Additionally, the antilles-tools dependency has been published to PyPi.

CWE-427

How to fix

Remediation Available

antillesNVD

Affected:< 1.0.1Fixed in:1.0.1CVE-2021-3840derived 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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.97%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Patch1

github.com

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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.