CVE-2020-5420— Gorouter is vulnerable to DoS attack via invalid HTTP responses
Quick assessment
Affected
Cloud Foundry Routing
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Cloud Foundry是美国Cloud Foundry基金会的一套开源的平台即服务（PaaS）云计算平台。该产品提供容器调度、持续交付和自动化服务部署等功能。Routing是其中的一个路由组件。 Cloud Foundry Routing(Gorouter) 0.206.0之前的版本中存在安全漏洞，攻击者可借助该漏洞导致CF集群崩溃。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-5420
Vulnerability Information
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Vulnerability Title
Gorouter is vulnerable to DoS attack via invalid HTTP responses
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5
Vulnerability Title
Cloud Foundry 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cloud Foundry是美国Cloud Foundry基金会的一套开源的平台即服务（PaaS）云计算平台。该产品提供容器调度、持续交付和自动化服务部署等功能。Routing是其中的一个路由组件。 Cloud Foundry Routing(Gorouter) 0.206.0之前的版本中存在安全漏洞，攻击者可借助该漏洞导致CF集群崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cloud Foundry | Routing | All ~ 0.206.0 | - |
|
| Cloud Foundry | CF Deployment | All ~ 13.15.0 | - |
|
II. Public POCs for CVE-2020-5420
| # | POC Description | Source Link | Shenlong Link |
|---|
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Security Blog Posts for CVE-2020-5420 (1)
-
https://www.cloudfoundry.org/blog/cve-2020-5420 x_refsource_CONFIRM
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V. Comments for CVE-2020-5420
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