Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of yahoo.com. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Testing all IP addresses (port 443): 74.6.231.21 98.137.11.163 98.137.11.164 74.6.143.26 74.6.231.20 74.6.143.25 ----------------------------------------------------- Start 2026-08-28 14:37:34 -->> 74.6.231.21:443 (yahoo.com) <<-- Further IP addresses: 74.6.143.25 98.137.11.163 98.137.11.164 74.6.143.26 74.6.231.20 2001:4998:44:3507::8001 2001:4998:124:1507::f001 2001:4998:44:3507::8000 2001:4998:124:1507::f000 2001:4998:24:120d::1:0 2001:4998:24:120d::1:1 rDNS (74.6.231.21): media-router-fp74.prod.media.vip.ne1.yahoo.com. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "https://www.yahoo.com/" HTTP clock skew 0 sec from localtime Strict Transport Security 365 days=31536000 s, just this domain Public Key Pinning -- Server banner ATS 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 X-XSS-Protection: 1; mode=block Referrer-Policy: no-referrer-when-downgrade Cache-Control: no-store, no-cache 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=C71CE364E450327E1E7F99EADD6E45137B546818E1AF38D94A252FA6971D4004 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 2026-08-28 14:38:15 [ 49s] -->> 74.6.231.21:443 (yahoo.com) <<-- ----------------------------------------------------- Start 2026-08-28 14:38:15 -->> 98.137.11.163:443 (yahoo.com) <<-- Further IP addresses: 74.6.143.25 74.6.231.21 98.137.11.164 74.6.143.26 74.6.231.20 2001:4998:44:3507::8001 2001:4998:124:1507::f001 2001:4998:44:3507::8000 2001:4998:124:1507::f000 2001:4998:24:120d::1:0 2001:4998:24:120d::1:1 rDNS (98.137.11.163): media-router-fp74.prod.media.vip.gq1.yahoo.com. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "https://www.yahoo.com/" HTTP clock skew -1 sec from localtime Strict Transport Security 365 days=31536000 s, just this domain Public Key Pinning -- Server banner ATS 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 X-XSS-Protection: 1; mode=block Referrer-Policy: no-referrer-when-downgrade Cache-Control: no-store, no-cache 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=C71CE364E450327E1E7F99EADD6E45137B546818E1AF38D94A252FA6971D4004 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 2026-08-28 14:39:05 [ 99s] -->> 98.137.11.163:443 (yahoo.com) <<-- ----------------------------------------------------- Start 2026-08-28 14:39:06 -->> 98.137.11.164:443 (yahoo.com) <<-- Further IP addresses: 74.6.143.25 74.6.231.21 98.137.11.163 74.6.143.26 74.6.231.20 2001:4998:44:3507::8001 2001:4998:124:1507::f001 2001:4998:44:3507::8000 2001:4998:124:1507::f000 2001:4998:24:120d::1:0 2001:4998:24:120d::1:1 rDNS (98.137.11.164): media-router-fp73.prod.media.vip.gq1.yahoo.com. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "https://www.yahoo.com/" HTTP clock skew 0 sec from localtime Strict Transport Security 365 days=31536000 s, just this domain Public Key Pinning -- Server banner ATS 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 X-XSS-Protection: 1; mode=block Referrer-Policy: no-referrer-when-downgrade Cache-Control: no-store, no-cache 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=C71CE364E450327E1E7F99EADD6E45137B546818E1AF38D94A252FA6971D4004 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 2026-08-28 14:39:54 [ 148s] -->> 98.137.11.164:443 (yahoo.com) <<-- ----------------------------------------------------- Start 2026-08-28 14:39:54 -->> 74.6.143.26:443 (yahoo.com) <<-- Further IP addresses: 74.6.143.25 74.6.231.21 98.137.11.163 98.137.11.164 74.6.231.20 2001:4998:44:3507::8001 2001:4998:124:1507::f001 2001:4998:44:3507::8000 2001:4998:124:1507::f000 2001:4998:24:120d::1:0 2001:4998:24:120d::1:1 rDNS (74.6.143.26): media-router-fp74.prod.media.vip.bf1.yahoo.com. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "https://www.yahoo.com/" HTTP clock skew 0 sec from localtime Strict Transport Security 365 days=31536000 s, just this domain Public Key Pinning -- Server banner ATS 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 X-XSS-Protection: 1; mode=block Referrer-Policy: no-referrer-when-downgrade Cache-Control: no-store, no-cache 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=C71CE364E450327E1E7F99EADD6E45137B546818E1AF38D94A252FA6971D4004 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 2026-08-28 14:40:43 [ 197s] -->> 74.6.143.26:443 (yahoo.com) <<-- ----------------------------------------------------- Start 2026-08-28 14:40:44 -->> 74.6.231.20:443 (yahoo.com) <<-- Further IP addresses: 74.6.143.25 74.6.231.21 98.137.11.163 98.137.11.164 74.6.143.26 2001:4998:44:3507::8001 2001:4998:124:1507::f001 2001:4998:44:3507::8000 2001:4998:124:1507::f000 2001:4998:24:120d::1:0 2001:4998:24:120d::1:1 rDNS (74.6.231.20): media-router-fp73.prod.media.vip.ne1.yahoo.com. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "https://www.yahoo.com/" HTTP clock skew 0 sec from localtime Strict Transport Security 365 days=31536000 s, just this domain Public Key Pinning -- Server banner ATS 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 X-XSS-Protection: 1; mode=block Referrer-Policy: no-referrer-when-downgrade Cache-Control: no-store, no-cache 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=C71CE364E450327E1E7F99EADD6E45137B546818E1AF38D94A252FA6971D4004 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 2026-08-28 14:41:37 [ 251s] -->> 74.6.231.20:443 (yahoo.com) <<-- ----------------------------------------------------- Start 2026-08-28 14:41:37 -->> 74.6.143.25:443 (yahoo.com) <<-- Further IP addresses: 74.6.231.21 98.137.11.163 98.137.11.164 74.6.143.26 74.6.231.20 2001:4998:44:3507::8001 2001:4998:124:1507::f001 2001:4998:44:3507::8000 2001:4998:124:1507::f000 2001:4998:24:120d::1:0 2001:4998:24:120d::1:1 rDNS (74.6.143.25): media-router-fp73.prod.media.vip.bf1.yahoo.com. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "https://www.yahoo.com/" HTTP clock skew 0 sec from localtime Strict Transport Security 365 days=31536000 s, just this domain Public Key Pinning -- Server banner ATS 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 X-XSS-Protection: 1; mode=block Referrer-Policy: no-referrer-when-downgrade Cache-Control: no-store, no-cache 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=C71CE364E450327E1E7F99EADD6E45137B546818E1AF38D94A252FA6971D4004 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 2026-08-28 14:42:27 [ 301s] -->> 74.6.143.25:443 (yahoo.com) <<-- ----------------------------------------------------- Done testing now all IP addresses (on port 443): 74.6.231.21 98.137.11.163 98.137.11.164 74.6.143.26 74.6.231.20 74.6.143.25
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.