Is CVE-2021-38598 in the CISA KEV catalog?

No. CVE-2021-38598 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-38598?

CVE-2021-38598 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2021-38598?

CVE-2021-38598 has an EPSS score of 1.21% (65th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-38598?

Upgrade neutron on debian 11 to 2:17.2.1-0+deb11u1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2021-38598

CRITICAL

9.1

CVSS v3

NVD

Description

OpenStack Neutron before 16.4.1, 17.x before 17.1.3, and 18.0.0 allows hardware address impersonation when the linuxbridge driver with ebtables-nft is used on a Netfilter-based platform. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the hardware addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations.

CWE-290

How to fix

Remediation Available

neutronDebian

Fixed in:2:17.2.1-0+deb11u1CVE-2021-38598

Fixed in:2:18.1.0-2CVE-2021-38598

neutronUbuntu

Fixed in:2:12.1.1-0ubuntu8.1USN-6067-1

Fixed in:2:16.4.2-0ubuntu6.2USN-6067-1

Fixed in:2:20.3.0-0ubuntu1.1USN-6067-1

python-neutronUbuntu

Fixed in:2:12.1.1-0ubuntu8.1USN-6067-1

python3-neutronUbuntu

Fixed in:2:16.4.2-0ubuntu6.2USN-6067-1

Fixed in:2:20.3.0-0ubuntu1.1USN-6067-1

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

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.21%probability of exploitation in 30 days

65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Exploit1

launchpad.net

Related Vulnerabilities

Other CWE-290 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-4358	Critical	9.8	97%	KEV	-
CVE-2022-24112	Critical	9.8	96%	KEV	Fix
CVE-2022-23131	Critical	9.1	96%	KEV	-
CVE-2021-29441	High	8.6	74%	-	Fix
CVE-2021-31195	Medium	6.5	74%	-	Fix
CVE-2020-7388	Critical	10.0	70%	-	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.