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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| BrightSign | BrightSign Digital Signage Diagnostic Web Server | ≤ 8.2.26 | — |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- BrightSign Digital Signage 8.2.26 - Server-Side Request Forgery http/cves/2020/CVE-2020-36884.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
References
- ExploitDB-48843 exploit
- BrightSign Homepage product
- Zero Science Lab Disclosure third-party-advisory
- Zero Science GitHub Repository issue-tracking
- VulnCheck Advisory: BrightSign Digital Signage Diagnostic Web Server 8.2.26 Unauthenticated SSRF third-party-advisory