Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of mail.google.com. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Testing all IP addresses (port 443): 172.217.214.19 172.217.214.18 172.217.214.17 172.217.214.83 ----------------------------------------------------- Start 2026-06-12 12:33:02 -->> 172.217.214.19:443 (mail.google.com) <<-- Further IP addresses: 172.217.214.83 172.217.214.18 172.217.214.17 2607:f8b0:4001:c05::53 2607:f8b0:4001:c05::11 2607:f8b0:4001:c05::12 2607:f8b0:4001:c05::13 rDNS (172.217.214.19): jr-in-f19.1e100.net. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "/mail/" HTTP clock skew 0 sec from localtime Strict Transport Security not offered Public Key Pinning -- Server banner GSE Application banner -- Cookie(s) (none issued at "/") -- maybe better try target URL of 30x Security headers X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff Content-Security-Policy: frame-ancestors 'self' X-XSS-Protection: 1; mode=block Cache-Control: private, max-age=7776000 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) Downgrade attack prevention supported (OK) SWEET32 (CVE-2016-2183, CVE-2016-6329) VULNERABLE, uses 64 bit block ciphers 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=17F38F82DCA939A8F6DE77B23DF6C7B63A1D60E9A9F2CF4098CC91530E9F322B LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) TLS1: ECDHE-ECDSA-AES128-SHA ECDHE-ECDSA-AES256-SHA ECDHE-RSA-AES128-SHA ECDHE-RSA-AES256-SHA AES128-SHA AES256-SHA DES-CBC3-SHA VULNERABLE -- but also supports higher protocols TLSv1.1 TLSv1.2 (likely mitigated) 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 2026-06-12 12:33:49 [ 58s] -->> 172.217.214.19:443 (mail.google.com) <<-- ----------------------------------------------------- Start 2026-06-12 12:33:49 -->> 172.217.214.18:443 (mail.google.com) <<-- Further IP addresses: 172.217.214.83 172.217.214.19 172.217.214.17 2607:f8b0:4001:c05::53 2607:f8b0:4001:c05::11 2607:f8b0:4001:c05::12 2607:f8b0:4001:c05::13 rDNS (172.217.214.18): jr-in-f18.1e100.net. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "/mail/" HTTP clock skew 0 sec from localtime Strict Transport Security not offered Public Key Pinning -- Server banner GSE Application banner -- Cookie(s) (none issued at "/") -- maybe better try target URL of 30x Security headers X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff Content-Security-Policy: frame-ancestors 'self' X-XSS-Protection: 1; mode=block Cache-Control: private, max-age=7776000 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) Downgrade attack prevention supported (OK) SWEET32 (CVE-2016-2183, CVE-2016-6329) VULNERABLE, uses 64 bit block ciphers 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=17F38F82DCA939A8F6DE77B23DF6C7B63A1D60E9A9F2CF4098CC91530E9F322B LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) TLS1: ECDHE-ECDSA-AES128-SHA ECDHE-ECDSA-AES256-SHA ECDHE-RSA-AES128-SHA ECDHE-RSA-AES256-SHA AES128-SHA AES256-SHA DES-CBC3-SHA VULNERABLE -- but also supports higher protocols TLSv1.1 TLSv1.2 (likely mitigated) 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 2026-06-12 12:34:54 [ 123s] -->> 172.217.214.18:443 (mail.google.com) <<-- ----------------------------------------------------- Start 2026-06-12 12:34:54 -->> 172.217.214.17:443 (mail.google.com) <<-- Further IP addresses: 172.217.214.83 172.217.214.19 172.217.214.18 2607:f8b0:4001:c05::53 2607:f8b0:4001:c05::11 2607:f8b0:4001:c05::12 2607:f8b0:4001:c05::13 rDNS (172.217.214.17): jr-in-f17.1e100.net. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "/mail/" HTTP clock skew 0 sec from localtime Strict Transport Security not offered Public Key Pinning -- Server banner GSE Application banner -- Cookie(s) (none issued at "/") -- maybe better try target URL of 30x Security headers X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff Content-Security-Policy: frame-ancestors 'self' X-XSS-Protection: 1; mode=block Cache-Control: private, max-age=7776000 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) Downgrade attack prevention supported (OK) SWEET32 (CVE-2016-2183, CVE-2016-6329) VULNERABLE, uses 64 bit block ciphers 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=17F38F82DCA939A8F6DE77B23DF6C7B63A1D60E9A9F2CF4098CC91530E9F322B LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) TLS1: ECDHE-ECDSA-AES128-SHA ECDHE-ECDSA-AES256-SHA ECDHE-RSA-AES128-SHA ECDHE-RSA-AES256-SHA AES128-SHA AES256-SHA DES-CBC3-SHA VULNERABLE -- but also supports higher protocols TLSv1.1 TLSv1.2 (likely mitigated) 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 2026-06-12 12:35:54 [ 183s] -->> 172.217.214.17:443 (mail.google.com) <<-- ----------------------------------------------------- Start 2026-06-12 12:35:55 -->> 172.217.214.83:443 (mail.google.com) <<-- Further IP addresses: 172.217.214.19 172.217.214.18 172.217.214.17 2607:f8b0:4001:c05::53 2607:f8b0:4001:c05::11 2607:f8b0:4001:c05::12 2607:f8b0:4001:c05::13 rDNS (172.217.214.83): jr-in-f83.1e100.net. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "/mail/" HTTP clock skew 0 sec from localtime Strict Transport Security not offered Public Key Pinning -- Server banner GSE Application banner -- Cookie(s) (none issued at "/") -- maybe better try target URL of 30x Security headers X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff Content-Security-Policy: frame-ancestors 'self' X-XSS-Protection: 1; mode=block Cache-Control: private, max-age=7776000 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) Downgrade attack prevention supported (OK) SWEET32 (CVE-2016-2183, CVE-2016-6329) VULNERABLE, uses 64 bit block ciphers 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=17F38F82DCA939A8F6DE77B23DF6C7B63A1D60E9A9F2CF4098CC91530E9F322B LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) TLS1: ECDHE-ECDSA-AES128-SHA ECDHE-ECDSA-AES256-SHA ECDHE-RSA-AES128-SHA ECDHE-RSA-AES256-SHA AES128-SHA AES256-SHA DES-CBC3-SHA VULNERABLE -- but also supports higher protocols TLSv1.1 TLSv1.2 (likely mitigated) 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 2026-06-12 12:36:52 [ 241s] -->> 172.217.214.83:443 (mail.google.com) <<-- ----------------------------------------------------- Done testing now all IP addresses (on port 443): 172.217.214.19 172.217.214.18 172.217.214.17 172.217.214.83
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.