Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of app.smartemailing.cz. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Testing all IP addresses (port 443): 31.7.241.30 89.187.156.60 217.16.183.248 ----------------------------------------------------- Start 2026-09-22 14:44:26 -->> 31.7.241.30:443 (app.smartemailing.cz) <<-- Further IP addresses: 217.16.183.248 89.187.156.60 rDNS (31.7.241.30): ase1.excello.cz. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 302 Found, redirecting to "https://app.smartemailing.cz/welcome/login/" HTTP clock skew 0 sec from localtime Strict Transport Security misconfiguration: \'0\' is not a valid max-age specification, just this domain Public Key Pinning -- Server banner nginx Application banner -- Cookie(s) 1 issued: 1/1 secure, 1/1 HttpOnly -- maybe better try target URL of 30x Security headers X-Frame-Options: SAMEORIGIN 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) no gzip/deflate/compress/br HTTP compression (OK) - only supplied "/" tested 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=8411D2FE155B3109EB56C4314AC745BD8031408889A6EA104ACB59D0F2F0F533 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 2026-09-22 14:45:28 [ 72s] -->> 31.7.241.30:443 (app.smartemailing.cz) <<-- ----------------------------------------------------- Start 2026-09-22 14:45:28 -->> 89.187.156.60:443 (app.smartemailing.cz) <<-- Further IP addresses: 217.16.183.248 31.7.241.30 rDNS (89.187.156.60): bse1.excello.cz. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 302 Found, redirecting to "https://app.smartemailing.cz/welcome/login/" HTTP clock skew 0 sec from localtime Strict Transport Security misconfiguration: \'0\' is not a valid max-age specification, just this domain Public Key Pinning -- Server banner nginx Application banner -- Cookie(s) 1 issued: 1/1 secure, 1/1 HttpOnly -- maybe better try target URL of 30x Security headers X-Frame-Options: SAMEORIGIN 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) no gzip/deflate/compress/br HTTP compression (OK) - only supplied "/" tested 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=8411D2FE155B3109EB56C4314AC745BD8031408889A6EA104ACB59D0F2F0F533 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 2026-09-22 14:46:54 [ 158s] -->> 89.187.156.60:443 (app.smartemailing.cz) <<-- ----------------------------------------------------- Start 2026-09-22 14:46:54 -->> 217.16.183.248:443 (app.smartemailing.cz) <<-- Further IP addresses: 31.7.241.30 89.187.156.60 rDNS (217.16.183.248): cse1.excello.cz. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 302 Found, redirecting to "https://app.smartemailing.cz/welcome/login/" HTTP clock skew 0 sec from localtime Strict Transport Security misconfiguration: \'0\' is not a valid max-age specification, just this domain Public Key Pinning -- Server banner nginx Application banner -- Cookie(s) 1 issued: 1/1 secure, 1/1 HttpOnly -- maybe better try target URL of 30x Security headers X-Frame-Options: SAMEORIGIN 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) no gzip/deflate/compress/br HTTP compression (OK) - only supplied "/" tested 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=8411D2FE155B3109EB56C4314AC745BD8031408889A6EA104ACB59D0F2F0F533 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 2026-09-22 14:48:24 [ 248s] -->> 217.16.183.248:443 (app.smartemailing.cz) <<-- ----------------------------------------------------- Done testing now all IP addresses (on port 443): 31.7.241.30 89.187.156.60 217.16.183.248
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.