Is CVE-2020-5420 in the CISA KEV catalog?

No. CVE-2020-5420 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-5420?

CVE-2020-5420 has a CVSS v3 base score of 7.7 (HIGH).

What is the EPSS score for CVE-2020-5420?

CVE-2020-5420 has an EPSS score of 1.18% (64th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-5420?

Upgrade cf-deployment to 13.15.0 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2020-5420

HIGH

7.7

CVSS v3

NVD

Description

Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with "cf push" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.

CWE-754

How to fix

Remediation Available

cf-deploymentNVD

Affected:< 13.15.0Fixed in:13.15.0CVE-2020-5420derived from NVD

gorouterNVD

Affected:< 0.206.0Fixed in:0.206.0CVE-2020-5420derived 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 RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.18%probability of exploitation in 30 days

64thpercentile

Moderate risk: more likely to be exploited than 64% of all known CVEs.

References

Vendor Advisory1

cloudfoundry.org

Related Vulnerabilities

Other CWE-754 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-4367	High	8.8	73%	-	Fix
CVE-2022-39288	High	7.5	59%	-	Fix
CVE-2023-30591	High	7.5	54%	-	-
CVE-2023-41993	High	8.8	29%	KEV	Fix
CVE-2024-43044	High	8.8	29%	-	Fix
CVE-2024-3393	High	7.5	27%	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.