CVE-2020-5420 | BDVDB-2026-141012 Detail

Cloud FoundryRouting

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.

Impact#

Per CVSS v3.0: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.

Weaknesses#

CWE-754 Improper Check for Unusual or Exceptional Conditions

References#

https://www.cloudfoundry.org/blog/cve-2020-5420

Exploit#

No public exploit known

History#

Version 12020-09-03Record published in the CVE List.
Version 22024-09-17Most recent update recorded in the CVE List.

Published

Published: 2020-09-03
Last modified: 2024-09-17

Vendor information

Vendor: Cloud Foundry
Product: Routing

All Cloud Foundry vulnerabilities

Score

7.7 High

EPSS

1.1%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 68.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= All and < 0.206.0
Fixed
0.206.0

Scoring System

CVSS v4.0

Not available

CVSS v3.1

Not available

CVSS v3.0

7.7 High

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Changed
Confidentiality	None
Integrity	None
Availability	High

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).