CVE-2020-8554 — CVE & Security Advisory Radar

🎯 CVE-2020-8554 MEDIUM 6.3 🔥 EPSS 9.3% 🧪 PoC 🇪🇺 EUVD

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CVE-2020-8554 | Kubernetes API server in all versions allow an attacker who is able to create a ClusterIP service and set the spec.externalIPs field, to intercept traffic to that IP address. Additionally, an attacker who is able to patch the status (which is considered a privileged operation and should not typically be granted to users) of a LoadBalancer service can set the status.loadBalancer.ingress.ip to similar effect.

Kubernetes API server in all versions allow an attacker who is able to create a ClusterIP service and set the spec.externalIPs field, to intercept traffic to that IP address. Additionally, an attacker who is able to patch the status (which is considered a privileged operation and should not typically be granted to users) of a LoadBalancer service can set the status.loadBalancer.ingress.ip to similar effect.

Klassifikation & Betroffenheit:

Kubernetes Kubernetes 0 <*kubernetes kubernetes *oracle communications_cloud_native_core_network_slice_selection_function 1.2.1oracle communications_cloud_native_core_policy 1.15.0oracle communications_cloud_native_core_service_communication_proxy 1.14.0

Improper Control of Generation of Code ('Code Injection') 🎯 Medium

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

🛡️ Empfohlene Mitigation: Refactor your program so that you do not have to dynamically generate code.

Vollständige Definition bei MITRE ➔

⚔️ Typische Angriffsmuster (CAPEC):

CAPEC-35 · Leverage Executable Code in Non-Executab… (Very High) CAPEC-77 · Manipulating User-Controlled Variables (Very High) CAPEC-242 · Code Injection (High)

🎯 ATT&CK-Techniken (Kill-Chain-Verhalten):

T1027.006 · Obfuscated Files or Information: H… T1027.009 · Obfuscated Files or Information: E… T1564.009 · Hide Artifacts: Resource Forking

🧩 Ähnliche Schwachstellen (Hersteller/Klasse/Score-Band):

CVE-2021-25749 7.8 CVE-2023-5044 7.6 CVE-2023-5043 7.6 CVE-2021-25748 7.6 CVE-2021-25746 7.6

🧪 Exploit-Evidenz:

🐙 rancher/externalip-webhook 🐙 jrmurray000/CVE-2020-8554 🐙 twistlock/k8s-cve-2020-8554-miti 🐙 Dviejopomata/CVE-2020-8554 🐙 alebedev87/gatekeeper-cve-2020-8

📚 Referenzen & Quellen:

🇪🇺 Original-Eintrag (ENISA EUVD) 🇺🇸 NVD-Eintrag

Ausnutzungs-Zeitleiste:

Reserviert 2020

Veröffentlicht 01/2021

Heute 06.09.

CVSS-Vektor-Analyse: 6.3

AV · Angriffsvektor Netzwerk

AC · Komplexität Gering

PR · Privilegien Gering

UI · Interaktion Keine

S · Scope Unverändert

C · Vertraulichkeit Gering

I · Integrität Gering

A · Verfügbarkeit Gering

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

Veröffentlicht:21.01.2021

Aktualisiert:17.06.2026 03:26

Assigner (CNA):kubernetes

EUVD-ID:EUVD-2022-1072

Quellen: 🇪🇺 EUVD-Datenbank (ENISA) + 🇺🇸 NVD-Anreicherung · 24-h-Cache

CWE-94: Code Injection ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

Tier	2026-08-29	2026-09-05
≥90 %	4	0
≥50 %	4	0
≥10 %	3	0
<10 %	304	300

6.3 MEDIUM

🇪🇺 EUVD

EPSS

9.3%

CVE-2020-8554 🌐 Netzwerk (Remote) 🔑 Geringe Nutzerrechte nötig

🧪 Kubernetes

CVE-2020-8554 | Kubernetes API server in all versions allow an attacker who is able to create a ClusterIP service and set the spec.externalIPs field, to intercept traffic to that IP address. Additionally, an attacker who is able to patch the status (which is considered a privileged operation and should not typically be granted to users) of a LoadBalancer service can set the status.loadBalancer.ingress.ip to similar effect.

CWE-94: Code Injection ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

21.01.2021

🛡️ Details ➔

Zero-Day & Vulnerability Intelligence Hub