CVE-2020-5402— UAA fails to check the state parameter when authenticating with external IDPs
Quick assessment
Affected
Cloud Foundry UAA
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 UAA是美国Cloud Foundry基金会的一款应用于CloudFoundry云平台的身份验证和管理服务终端。 Cloud Foundry UAA 74.14.0之前版本中存在跨站请求伪造漏洞，该漏洞源于在使用外部的IDP进行身份验证时，程序未在回调函数中检查OAuth2状态参数。远程攻击者可通过发送格式错误的HTTP请求利用该漏洞执行未经授权的操作。
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I. Basic Information for CVE-2020-5402
Vulnerability Information
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Vulnerability Title
UAA fails to check the state parameter when authenticating with external IDPs
Source: CVE Program / CVE List V5
Vulnerability Description
In Cloud Foundry UAA, versions prior to 74.14.0, a CSRF vulnerability exists due to the OAuth2 state parameter not being checked in the callback function when authenticating with external identity providers.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Cloud Foundry UAA 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cloud Foundry UAA是美国Cloud Foundry基金会的一款应用于CloudFoundry云平台的身份验证和管理服务终端。 Cloud Foundry UAA 74.14.0之前版本中存在跨站请求伪造漏洞，该漏洞源于在使用外部的IDP进行身份验证时，程序未在回调函数中检查OAuth2状态参数。远程攻击者可通过发送格式错误的HTTP请求利用该漏洞执行未经授权的操作。
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 | UAA | unspecified ~ v74.14.0 | - |
|
II. Public POCs for CVE-2020-5402
| # | POC Description | Source Link | Shenlong Link |
|---|
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Security Blog Posts for CVE-2020-5402 (1)
-
https://www.cloudfoundry.org/blog/cve-2020-5402 x_refsource_CONFIRM
Same Patch Batch · Cloud Foundry · 2020-02-27 · 3 CVEs total
| CVE-2020-5400 | Cloud Controller logs environment variables from app manifests | |
| CVE-2020-5401 | Cloud Foundry GoRouter is vulnerable to cache poisoning |
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V. Comments for CVE-2020-5402
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