Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of release-assets.githubusercontent.com. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Testing all IP addresses (port 443): 185.199.110.133 185.199.109.133 185.199.108.133 185.199.111.133 ----------------------------------------------------- Start 2026-03-04 08:09:43 -->> 185.199.110.133:443 (release-assets.githubusercontent.com) <<-- Further IP addresses: 185.199.111.133 185.199.109.133 185.199.108.133 rDNS (185.199.110.133): cdn-185-199-110-133.github.com. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 404 Not Found (Hint: supply a path which doesn't give a "404 Not Found") HTTP clock skew +2482 sec from localtime HTTP Age (RFC 7234) 2482 Strict Transport Security not offered Public Key Pinning -- Server banner Varnish Application banner -- Cookie(s) (none issued at "/") -- HTTP status 404 signals you maybe missed the web application Security headers X-Served-By: cache-iad-kjyo7100145-IAD, cache-chi-klot8100047-CHI Reverse Proxy banner Via: 1.1 varnish, 1.1 varnish X-Cache: MISS, HIT X-Cache-Hits: 0, 1 Testing vulnerabilities Secure Renegotiation (RFC 5746) supported (OK) Secure Client-Initiated Renegotiation not vulnerable (OK) -- mitigated (1 successful reneg within 10 in 33s(timeout)) 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=02BDD44D1137CE2317D9AACCD36F753CAA1FBEC7EE91CC5FAE51D81E8FF7DCA7 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 2026-03-04 08:11:06 [ 93s] -->> 185.199.110.133:443 (release-assets.githubusercontent.com) <<-- ----------------------------------------------------- Start 2026-03-04 08:11:06 -->> 185.199.109.133:443 (release-assets.githubusercontent.com) <<-- Further IP addresses: 185.199.111.133 185.199.110.133 185.199.108.133 rDNS (185.199.109.133): cdn-185-199-109-133.github.com. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 404 Not Found (Hint: supply a path which doesn't give a "404 Not Found") HTTP clock skew +2567 sec from localtime HTTP Age (RFC 7234) 2567 Strict Transport Security not offered Public Key Pinning -- Server banner Varnish Application banner -- Cookie(s) (none issued at "/") -- HTTP status 404 signals you maybe missed the web application Security headers X-Served-By: cache-iad-kjyo7100145-IAD, cache-chi-kigq8000132-CHI Reverse Proxy banner Via: 1.1 varnish, 1.1 varnish X-Cache: MISS, HIT X-Cache-Hits: 0, 3 Testing vulnerabilities Secure Renegotiation (RFC 5746) supported (OK) Secure Client-Initiated Renegotiation not vulnerable (OK) -- mitigated (1 successful reneg within 10 in 33s(timeout)) 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=02BDD44D1137CE2317D9AACCD36F753CAA1FBEC7EE91CC5FAE51D81E8FF7DCA7 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 2026-03-04 08:12:32 [ 179s] -->> 185.199.109.133:443 (release-assets.githubusercontent.com) <<-- ----------------------------------------------------- Start 2026-03-04 08:12:32 -->> 185.199.108.133:443 (release-assets.githubusercontent.com) <<-- Further IP addresses: 185.199.111.133 185.199.110.133 185.199.109.133 rDNS (185.199.108.133): cdn-185-199-108-133.github.com. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 404 Not Found (Hint: supply a path which doesn't give a "404 Not Found") HTTP clock skew +2653 sec from localtime HTTP Age (RFC 7234) 2653 Strict Transport Security not offered Public Key Pinning -- Server banner Varnish Application banner -- Cookie(s) (none issued at "/") -- HTTP status 404 signals you maybe missed the web application Security headers X-Served-By: cache-iad-kjyo7100145-IAD, cache-chi-klot8100179-CHI Reverse Proxy banner Via: 1.1 varnish, 1.1 varnish X-Cache: MISS, HIT X-Cache-Hits: 0, 1 Testing vulnerabilities Secure Renegotiation (RFC 5746) supported (OK) Secure Client-Initiated Renegotiation not vulnerable (OK) -- mitigated (1 successful reneg within 10 in 33s(timeout)) 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=02BDD44D1137CE2317D9AACCD36F753CAA1FBEC7EE91CC5FAE51D81E8FF7DCA7 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 2026-03-04 08:14:00 [ 267s] -->> 185.199.108.133:443 (release-assets.githubusercontent.com) <<-- ----------------------------------------------------- Start 2026-03-04 08:14:00 -->> 185.199.111.133:443 (release-assets.githubusercontent.com) <<-- Further IP addresses: 185.199.110.133 185.199.109.133 185.199.108.133 rDNS (185.199.111.133): cdn-185-199-111-133.github.com. Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 404 Not Found (Hint: supply a path which doesn't give a "404 Not Found") HTTP clock skew +2745 sec from localtime HTTP Age (RFC 7234) 2745 Strict Transport Security not offered Public Key Pinning -- Server banner Varnish Application banner -- Cookie(s) (none issued at "/") -- HTTP status 404 signals you maybe missed the web application Security headers X-Served-By: cache-iad-kjyo7100145-IAD, cache-chi-kigq8000050-CHI Reverse Proxy banner Via: 1.1 varnish, 1.1 varnish X-Cache: MISS, HIT X-Cache-Hits: 0, 1 Testing vulnerabilities Secure Renegotiation (RFC 5746) supported (OK) Secure Client-Initiated Renegotiation not vulnerable (OK) -- mitigated (1 successful reneg within 10 in 33s(timeout)) 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=02BDD44D1137CE2317D9AACCD36F753CAA1FBEC7EE91CC5FAE51D81E8FF7DCA7 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 2026-03-04 08:15:31 [ 358s] -->> 185.199.111.133:443 (release-assets.githubusercontent.com) <<-- ----------------------------------------------------- Done testing now all IP addresses (on port 443): 185.199.110.133 185.199.109.133 185.199.108.133 185.199.111.133
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.