Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of one.one.one.one. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Testing all IP addresses (port 443): 1.1.1.1 1.0.0.1 ----------------------------------------------------- Start 2026-04-16 14:17:14 -->> 1.1.1.1:443 (one.one.one.one) <<-- Further IP addresses: 1.0.0.1 2606:4700:4700::1001 2606:4700:4700::1111 rDNS (1.1.1.1): one.one.one.one. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 200 OK HTTP clock skew 0 sec from localtime Strict Transport Security not offered Public Key Pinning -- Server banner cloudflare Application banner -- Cookie(s) (none issued at "/") Security headers X-Frame-Options: DENY X-Content-Type-Options: nosniff Content-Security-Policy: default-src 'none'; script-src 'self' 'sha256-qcMXZ/ErgDG9p2Htysz9era6iflv8JXya41zOY0slSc=' sha256-ydM8qJ+T0Nd7adK8t34/cs0GvvCG0JBujCWzV3uML8E=' sha256-TzTXRDJBcbY1qVQheGb/4iSGqKPqCg6XVoerYf5BYMY=' mbed.cloudflarestream.com; style-src 'self' 'unsafe-inline' fonts.googleapis.com; img-src 'self' data:; font-src fonts.gstatic.com; connect-src 'self' 1.1.1.1 1.0.0.1 *.cloudflare-dns.com *.help.every1dns.net; frame-src embed.cloudflarestream.com; manifest-src 'self' Access-Control-Allow-Origin: * Referrer-Policy: strict-origin-when-cross-origin Cache-Control: public, max-age=0, must-revalidate Reverse Proxy banner -- Testing vulnerabilities Secure Renegotiation (RFC 5746) supported (OK) Secure Client-Initiated Renegotiation not vulnerable (OK) CRIME, TLS (CVE-2012-4929) not vulnerable (OK) BREACH (CVE-2013-3587) potentially NOT ok, "gzip" HTTP compression detected. - only supplied "/" tested Can be ignored for static pages or if no secrets in the page POODLE, SSL (CVE-2014-3566) not vulnerable (OK) TLS_FALLBACK_SCSV (RFC 7507) No fallback possible (OK), no protocol below TLS 1.2 offered SWEET32 (CVE-2016-2183, CVE-2016-6329) not vulnerable (OK) FREAK (CVE-2015-0204) not vulnerable (OK) DROWN (CVE-2016-0800, CVE-2016-0703) not vulnerable on this host and port (OK) make sure you don't use this certificate elsewhere with SSLv2 enabled services, see https://search.censys.io/search?resource=hosts&virtual_hosts=INCLUDE&q=F77FE5F2E253BC5DAA66579ED70E38E4848707525A6537AF16D4EDA9FFE2A55F LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) not vulnerable (OK), no SSL3 or TLS1 LUCKY13 (CVE-2013-0169), experimental potentially VULNERABLE, uses obsolete cipher block chaining ciphers with TLS, see server prefs. Winshock (CVE-2014-6321), experimental not vulnerable (OK) RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK) Done 2026-04-16 14:18:09 [ 65s] -->> 1.1.1.1:443 (one.one.one.one) <<-- ----------------------------------------------------- Start 2026-04-16 14:18:09 -->> 1.0.0.1:443 (one.one.one.one) <<-- Further IP addresses: 1.1.1.1 2606:4700:4700::1001 2606:4700:4700::1111 rDNS (1.0.0.1): one.one.one.one. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 200 OK HTTP clock skew 0 sec from localtime Strict Transport Security not offered Public Key Pinning -- Server banner cloudflare Application banner -- Cookie(s) (none issued at "/") Security headers X-Frame-Options: DENY X-Content-Type-Options: nosniff Content-Security-Policy: default-src 'none'; script-src 'self' 'sha256-qcMXZ/ErgDG9p2Htysz9era6iflv8JXya41zOY0slSc=' sha256-ydM8qJ+T0Nd7adK8t34/cs0GvvCG0JBujCWzV3uML8E=' sha256-TzTXRDJBcbY1qVQheGb/4iSGqKPqCg6XVoerYf5BYMY=' mbed.cloudflarestream.com; style-src 'self' 'unsafe-inline' fonts.googleapis.com; img-src 'self' data:; font-src fonts.gstatic.com; connect-src 'self' 1.1.1.1 1.0.0.1 *.cloudflare-dns.com *.help.every1dns.net; frame-src embed.cloudflarestream.com; manifest-src 'self' Access-Control-Allow-Origin: * Referrer-Policy: strict-origin-when-cross-origin Cache-Control: public, max-age=0, must-revalidate Reverse Proxy banner -- Testing vulnerabilities Secure Renegotiation (RFC 5746) supported (OK) Secure Client-Initiated Renegotiation not vulnerable (OK) CRIME, TLS (CVE-2012-4929) not vulnerable (OK) BREACH (CVE-2013-3587) potentially NOT ok, "gzip" HTTP compression detected. - only supplied "/" tested Can be ignored for static pages or if no secrets in the page POODLE, SSL (CVE-2014-3566) not vulnerable (OK) TLS_FALLBACK_SCSV (RFC 7507) No fallback possible (OK), no protocol below TLS 1.2 offered SWEET32 (CVE-2016-2183, CVE-2016-6329) not vulnerable (OK) FREAK (CVE-2015-0204) not vulnerable (OK) DROWN (CVE-2016-0800, CVE-2016-0703) not vulnerable on this host and port (OK) make sure you don't use this certificate elsewhere with SSLv2 enabled services, see https://search.censys.io/search?resource=hosts&virtual_hosts=INCLUDE&q=F77FE5F2E253BC5DAA66579ED70E38E4848707525A6537AF16D4EDA9FFE2A55F LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) not vulnerable (OK), no SSL3 or TLS1 LUCKY13 (CVE-2013-0169), experimental potentially VULNERABLE, uses obsolete cipher block chaining ciphers with TLS, see server prefs. Winshock (CVE-2014-6321), experimental not vulnerable (OK) RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK) Done 2026-04-16 14:19:07 [ 123s] -->> 1.0.0.1:443 (one.one.one.one) <<-- ----------------------------------------------------- Done testing now all IP addresses (on port 443): 1.1.1.1 1.0.0.1
About this Scan
This scan uses testssl.sh to check for:
- Protocols: SSLv2, SSLv3, TLS 1.0, TLS 1.1, TLS 1.2, TLS 1.3
- Vulnerabilities: Heartbleed, POODLE, FREAK, Logjam, DROWN, etc.
- Cipher Suites: Weak ciphers, perfect forward secrecy (PFS) support.