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Routing Release CVE-2023-20882

MEDIUM
Uncontrolled Resource Consumption (CWE-400)
2023-05-26 security@vmware.com
5.9
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource consumption limits
MITRE ATT&CK

1 technique across 1 tactic: Impact

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 5.9 (MEDIUM). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required.

Exploit ScenarioDerived

A remote attacker could cause denial of service by exhausting system resources by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.6% exploitation probability (EPSS)

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AnalysisAI

In Cloud foundry routing release versions from 0.262.0 and prior to 0.266.0,a bug in the gorouter process can lead to a denial of service of applications hosted on Cloud Foundry. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement rate limiting, set resource quotas, validate input sizes, use timeouts.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Uncontrolled Resource Consumption (CWE-400), which allows attackers to cause denial of service by exhausting system resources. In Cloud foundry routing release versions from 0.262.0 and prior to 0.266.0,a bug in the gorouter process can lead to a denial of service of applications hosted on Cloud Foundry. Under the right circumstances, when client connections are closed prematurely, gorouter marks the currently selected backend as failed and removes it from the routing pool. Affected products include: Cloudfoundry Cf-Deployment, Cloudfoundry Routing Release. Version information: prior to 0.266.0.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.9 MEDIUM
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

DescriptionNVD

In Cloud foundry routing release versions from 0.262.0 and prior to 0.266.0,a bug in the gorouter process can lead to a denial of service of applications hosted on Cloud Foundry. Under the right circumstances, when client connections are closed prematurely, gorouter marks the currently selected backend as failed and removes it from the routing pool.

Threat Intelligence Overview

EPSS Score
0.6%
Top 56% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.6%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

31
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +30
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)NVD

cpe:2.3:a:cloudfoundry:cf-deployment:*:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:routing_release:*:*:*:*:*:*:*:*
CVE-2016-8218 CRITICAL
9.8 Jun 13

An issue was discovered in Cloud Foundry Foundation routing-release versions prior to 0.142.0 and cf-release versions 20

CVE-2019-11289 HIGH
8.6 Nov 19

Cloud Foundry Routing, all versions before 0.193.0, does not properly validate nonce input. Rated high severity (CVSS 8.

CVE-2018-1221 HIGH
8.1 Mar 19

In cf-deployment before 1.14.0 and routing-release before 0.172.0, the Cloud Foundry Gorouter mishandles WebSocket reque

CVE-2024-22279 HIGH
7.5 Jun 10

Improper handling of requests in Routing Release > v0.273.0 and <= v0.297.0 allows an unauthenticated attacker to degrad

CVE-2017-8034 MEDIUM
6.6 Jul 17

The Cloud Controller and Router in Cloud Foundry (CAPI-release capi versions prior to v1.32.0, Routing-release versions

CVE-2020-5416 MEDIUM
6.5 Aug 21

Cloud Foundry Routing (Gorouter), versions prior to 0.204.0, when used in a deployment with NGINX reverse proxies in fro

CVE-2019-3789 MEDIUM
6.5 Apr 24

Cloud Foundry Routing Release, all versions prior to 0.188.0, contains a vulnerability that can hijack the traffic to ro

CVE-2017-8047 MEDIUM
6.1 Oct 04

In Cloud Foundry router routing-release all versions prior to v0.163.0 and cf-release all versions prior to v274, in som

CVE-2020-15586 MEDIUM
5.9 Jul 17

Go before 1.13.13 and 1.14.x before 1.14.5 has a data race in some net/http servers, as demonstrated by the httputil.Rev

CVE-2023-34041 MEDIUM
5.3 Sep 08

Cloud foundry routing release versions prior to 0.278.0 are vulnerable to abuse of HTTP Hop-by-Hop Headers. Rated medium

CVE-2020-5401 MEDIUM
5.3 Feb 27

Cloud Foundry Routing Release, versions prior to 0.197.0, contains GoRouter, which allows malicious clients to send inva

CVE-2018-1193 MEDIUM
5.3 May 23

Cloud Foundry routing-release, versions prior to 0.175.0, lacks sanitization for user-provided X-Forwarded-Proto headers

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