Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of qsbr.cf2.quoracdn.net. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Testing all IP addresses (port 443): 162.159.152.17 162.159.153.247 ----------------------------------------------------- Start 2026-10-05 00:19:14 -->> 162.159.152.17:443 (qsbr.cf2.quoracdn.net) <<-- Further IP addresses: 162.159.153.247 rDNS (162.159.152.17): -- Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 403 Forbidden 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 "/") -- HTTP status 403 signals you maybe missed the web application Security headers Access-Control-Allow-Origin: * 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, "br 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=CB703435B1BAFE892CA7B612E886666AC752ABAC4B33DEEE904D87DC672C1551 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 2026-10-05 00:19:58 [ 51s] -->> 162.159.152.17:443 (qsbr.cf2.quoracdn.net) <<-- ----------------------------------------------------- Start 2026-10-05 00:19:58 -->> 162.159.153.247:443 (qsbr.cf2.quoracdn.net) <<-- Further IP addresses: 162.159.152.17 rDNS (162.159.153.247): -- Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 403 Forbidden 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 "/") -- HTTP status 403 signals you maybe missed the web application Security headers Access-Control-Allow-Origin: * 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, "br 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=CB703435B1BAFE892CA7B612E886666AC752ABAC4B33DEEE904D87DC672C1551 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 2026-10-05 00:20:42 [ 95s] -->> 162.159.153.247:443 (qsbr.cf2.quoracdn.net) <<-- ----------------------------------------------------- Done testing now all IP addresses (on port 443): 162.159.152.17 162.159.153.247
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.