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CVE-2020-36884— BrightSign Digital Signage Diagnostic Web Server 8.2.26 Unauthenticated SSRF

Quick assessment

Affected
BrightSign, LLC BrightSign Digital Signage Diagnostic Web Server
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

BrightSign Digital Signage Diagnostic Web Server是美国BrightSign公司的一个故障诊断和配置工具。 BrightSign Digital Signage Diagnostic Web Server 8.2.26及之前版本存在代码问题漏洞，该漏洞源于Download Speed Test服务的url参数存在服务端请求伪造，可能导致网络枚举攻击。

AI Predicted 9.1 Difficulty: Easy EPSS 1.12% · P65

Public Exploits 1

Nuclei · 1 CVE-2020-36884.yaml [template]
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I. Basic Information for CVE-2020-36884

Vulnerability Information
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Vulnerability Title
BrightSign Digital Signage Diagnostic Web Server 8.2.26 Unauthenticated SSRF
Source: CVE Program / CVE List V5
Vulnerability Description
BrightSign Digital Signage Diagnostic Web Server 8.2.26 and less contains an unauthenticated server-side request forgery vulnerability in the 'url' GET parameter of the Download Speed Test service. Attackers can specify external domains to bypass firewalls and perform network enumeration by forcing the application to make arbitrary HTTP requests to internal network hosts.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
BrightSign Digital Signage Diagnostic Web Server 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
BrightSign Digital Signage Diagnostic Web Server是美国BrightSign公司的一个故障诊断和配置工具。 BrightSign Digital Signage Diagnostic Web Server 8.2.26及之前版本存在代码问题漏洞，该漏洞源于Download Speed Test服务的url参数存在服务端请求伪造，可能导致网络枚举攻击。
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
BrightSign, LLC BrightSign Digital Signage Diagnostic Web Server 0 ~ 8.2.26 -

II. Public POCs for CVE-2020-36884

# POC Description Source Link Shenlong Link
1 Unauthenticated Server-Side Request Forgery (SSRF) vulnerability exists in the BrightSign digital signage media player affecting the Diagnostic Web Server (DWS). The application parses user supplied data in the 'url' GET parameter to construct a diagnostics request to the Download Speed Test service. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-36884.yaml POC Details
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III. Intelligence Information for CVE-2020-36884

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Exploits & Public PoCs for CVE-2020-36884 (1)

Other References for CVE-2020-36884 (4)

IV. Related Vulnerabilities

Same weakness: CWE-918

V. Comments for CVE-2020-36884

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