testssl.sh examples command line tool check server TLS/SSL (weak) ciphers and detect TLS/SSL vulnerabilities
Want to use command line to test server TLS/SSL config properly, find weak ciphers, scan TLS/SSL server vulnerabilities, run in CI? Try testssl.sh.
If you want to test server TLS/SSL and have following
- Want to use command line to test server TLS/SSL config properly, scan TLS/SSL vulnerabilities.
- Want to run TLS/SSL test in CI (Continue Integration) environment.
- Want to output result as HTML/JSON/CSV format.
- Do not want to use Qualys SSL Labs SSL Server test for privacy concern.
testssl.sh is a free and open source command line tool which checks a server’s support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more.
testssl.sh key features
- Works for multiple platforms: Linux, Mac OSX, FreeBSD, NetBSD and WSL/MSYS2/Cygwin. bash is required.
- Docker image is ready to use.
docker run --rm -ti drwetter/testssl.sh. - Flexibility: You can test any SSL/TLS enabled and STARTTLS service, not only webservers at port 443.
- Toolbox: Several command line options help you to run your test and configure your output to HTML/JSON/CSV format.
- Reliability: features are tested thoroughly.
- Verbosity: If a particular check cannot be performed because of a missing capability on your client side, you’ll get a warning.
- Privacy: It’s only you who sees the result, not a third party.
- Freedom: It’s 100% open source on github.
Test vulnerabilities
testssl.sh support following vulnerabilities detection:
- Heartbleed (CVE-2014-0160)
- CCS (CVE-2014-0224)
- Ticketbleed (CVE-2016-9244), experiment.
- ROBOT
- Secure Renegotiation (RFC 5746)
- Secure Client-Initiated Renegotiation
- CRIME, TLS (CVE-2012-4929)
- BREACH (CVE-2013-3587)
- POODLE, SSL (CVE-2014-3566)
- TLS_FALLBACK_SCSV (RFC 7507)
- SWEET32 (CVE-2016-2183, CVE-2016-6329)
- FREAK (CVE-2015-0204)
- DROWN (CVE-2016-0800, CVE-2016-0703)
- LOGJAM (CVE-2015-4000), experimental
- BEAST (CVE-2011-3389)
- LUCKY13 (CVE-2013-0169), experimental
- Winshock (CVE-2014-6321), experimental
- RC4 (CVE-2013-2566, CVE-2015-2808)
Install
Mac OS X use homebrew:
brew install testssl
For linux distributions, search testssl in its own package manager.
The easiest way is not install it locally, use docker image to always keep up to date. see docker command as below.
Sample Usage
Test website TLS/SSL config and vulnerabilities
The easiest way to use testssl.sh test a website TLS/SSL config and vulnerabilities just need website domain name.
It will test all configurations and scan all the known vulnerabilities.
Hint
-
Options requiring a value can also be called with ‘=’ e.g.
testssl.sh -t=smtp --wide --openssl=/usr/bin/openssl <URI>. -
<URI>always needs to be the last parameter.
The following command use https://www.example.com as an example:
$ docker run --rm drwetter/testssl.sh https://www.example.com
###########################################################
testssl.sh 3.1dev from https://testssl.sh/dev/
This program is free software. Distribution and
modification under GPLv2 permitted.
USAGE w/o ANY WARRANTY. USE IT AT YOUR OWN RISK!
Please file bugs @ https://testssl.sh/bugs/
###########################################################
Using "OpenSSL 1.0.2-chacha (1.0.2k-dev)" [~183 ciphers]
on 68d47b2e5ecd:/home/testssl/bin/openssl.Linux.x86_64
(built: "Jan 18 17:12:17 2019", platform: "linux-x86_64")
Further IP addresses: 2606:2800:220:1:248:1893:25c8:1946
rDNS (93.184.216.34): --
Service detected: HTTP
Testing protocols via sockets except NPN+ALPN
SSLv2 not offered (OK)
SSLv3 not offered (OK)
TLS 1 offered (deprecated)
TLS 1.1 offered (deprecated)
TLS 1.2 offered (OK)
TLS 1.3 offered (OK): final
NPN/SPDY h2, http/1.1, http/1.0 (advertised)
ALPN/HTTP2 h2, http/1.1 (offered)
Testing cipher categories
NULL ciphers (no encryption) not offered (OK)
Anonymous NULL Ciphers (no authentication) not offered (OK)
Export ciphers (w/o ADH+NULL) not offered (OK)
LOW: 64 Bit + DES, RC[2,4], MD5 (w/o export) not offered (OK)
Triple DES Ciphers / IDEA not offered
Obsoleted CBC ciphers (AES, ARIA etc.) offered
Strong encryption (AEAD ciphers) with no FS offered (OK)
Forward Secrecy strong encryption (AEAD ciphers) offered (OK)
Testing server's cipher preferences
Has server cipher order? yes (OK) -- TLS 1.3 and below
Negotiated protocol TLSv1.3
Negotiated cipher TLS_AES_256_GCM_SHA384, 256 bit ECDH (P-256)
Cipher per protocol
Hexcode Cipher Suite Name (OpenSSL) KeyExch. Encryption Bits Cipher Suite Name (IANA/RFC)
-----------------------------------------------------------------------------------------------------------------------------
SSLv2
-
SSLv3
-
TLSv1 (server order)
xc013 ECDHE-RSA-AES128-SHA ECDH 256 AES 128 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
xc014 ECDHE-RSA-AES256-SHA ECDH 256 AES 256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
x33 DHE-RSA-AES128-SHA DH 2048 AES 128 TLS_DHE_RSA_WITH_AES_128_CBC_SHA
x39 DHE-RSA-AES256-SHA DH 2048 AES 256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA
x88 DHE-RSA-CAMELLIA256-SHA DH 2048 Camellia 256 TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
x45 DHE-RSA-CAMELLIA128-SHA DH 2048 Camellia 128 TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
x35 AES256-SHA RSA AES 256 TLS_RSA_WITH_AES_256_CBC_SHA
x84 CAMELLIA256-SHA RSA Camellia 256 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
x2f AES128-SHA RSA AES 128 TLS_RSA_WITH_AES_128_CBC_SHA
x41 CAMELLIA128-SHA RSA Camellia 128 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
x9a DHE-RSA-SEED-SHA DH 2048 SEED 128 TLS_DHE_RSA_WITH_SEED_CBC_SHA
x96 SEED-SHA RSA SEED 128 TLS_RSA_WITH_SEED_CBC_SHA
TLSv1.1 (server order)
xc013 ECDHE-RSA-AES128-SHA ECDH 256 AES 128 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
xc014 ECDHE-RSA-AES256-SHA ECDH 256 AES 256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
x33 DHE-RSA-AES128-SHA DH 2048 AES 128 TLS_DHE_RSA_WITH_AES_128_CBC_SHA
x39 DHE-RSA-AES256-SHA DH 2048 AES 256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA
x88 DHE-RSA-CAMELLIA256-SHA DH 2048 Camellia 256 TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
x45 DHE-RSA-CAMELLIA128-SHA DH 2048 Camellia 128 TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
x35 AES256-SHA RSA AES 256 TLS_RSA_WITH_AES_256_CBC_SHA
x84 CAMELLIA256-SHA RSA Camellia 256 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
x2f AES128-SHA RSA AES 128 TLS_RSA_WITH_AES_128_CBC_SHA
x41 CAMELLIA128-SHA RSA Camellia 128 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
x9a DHE-RSA-SEED-SHA DH 2048 SEED 128 TLS_DHE_RSA_WITH_SEED_CBC_SHA
x96 SEED-SHA RSA SEED 128 TLS_RSA_WITH_SEED_CBC_SHA
TLSv1.2 (server order)
xc02f ECDHE-RSA-AES128-GCM-SHA256 ECDH 256 AESGCM 128 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
xc030 ECDHE-RSA-AES256-GCM-SHA384 ECDH 256 AESGCM 256 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
x9e DHE-RSA-AES128-GCM-SHA256 DH 2048 AESGCM 128 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
x9f DHE-RSA-AES256-GCM-SHA384 DH 2048 AESGCM 256 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
xc027 ECDHE-RSA-AES128-SHA256 ECDH 256 AES 128 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
xc013 ECDHE-RSA-AES128-SHA ECDH 256 AES 128 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
xc028 ECDHE-RSA-AES256-SHA384 ECDH 256 AES 256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
xc014 ECDHE-RSA-AES256-SHA ECDH 256 AES 256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
x67 DHE-RSA-AES128-SHA256 DH 2048 AES 128 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
x33 DHE-RSA-AES128-SHA DH 2048 AES 128 TLS_DHE_RSA_WITH_AES_128_CBC_SHA
x6b DHE-RSA-AES256-SHA256 DH 2048 AES 256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
x39 DHE-RSA-AES256-SHA DH 2048 AES 256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA
x9c AES128-GCM-SHA256 RSA AESGCM 128 TLS_RSA_WITH_AES_128_GCM_SHA256
x88 DHE-RSA-CAMELLIA256-SHA DH 2048 Camellia 256 TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
x45 DHE-RSA-CAMELLIA128-SHA DH 2048 Camellia 128 TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
x35 AES256-SHA RSA AES 256 TLS_RSA_WITH_AES_256_CBC_SHA
x84 CAMELLIA256-SHA RSA Camellia 256 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
x2f AES128-SHA RSA AES 128 TLS_RSA_WITH_AES_128_CBC_SHA
x41 CAMELLIA128-SHA RSA Camellia 128 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
x9a DHE-RSA-SEED-SHA DH 2048 SEED 128 TLS_DHE_RSA_WITH_SEED_CBC_SHA
x96 SEED-SHA RSA SEED 128 TLS_RSA_WITH_SEED_CBC_SHA
TLSv1.3 (server order)
x1302 TLS_AES_256_GCM_SHA384 ECDH 256 AESGCM 256 TLS_AES_256_GCM_SHA384
x1303 TLS_CHACHA20_POLY1305_SHA256 ECDH 256 ChaCha20 256 TLS_CHACHA20_POLY1305_SHA256
x1301 TLS_AES_128_GCM_SHA256 ECDH 256 AESGCM 128 TLS_AES_128_GCM_SHA256
Testing robust forward secrecy (FS) -- omitting Null Authentication/Encryption, 3DES, RC4
FS is offered (OK) TLS_AES_256_GCM_SHA384
TLS_CHACHA20_POLY1305_SHA256
ECDHE-RSA-AES256-GCM-SHA384
ECDHE-RSA-AES256-SHA384 ECDHE-RSA-AES256-SHA
DHE-RSA-AES256-GCM-SHA384 DHE-RSA-AES256-SHA256
DHE-RSA-AES256-SHA DHE-RSA-CAMELLIA256-SHA
TLS_AES_128_GCM_SHA256
ECDHE-RSA-AES128-GCM-SHA256
ECDHE-RSA-AES128-SHA256 ECDHE-RSA-AES128-SHA
DHE-RSA-AES128-GCM-SHA256 DHE-RSA-AES128-SHA256
DHE-RSA-AES128-SHA DHE-RSA-SEED-SHA
DHE-RSA-CAMELLIA128-SHA
Elliptic curves offered: prime256v1
DH group offered: Unknown DH group (2048 bits)
Testing server defaults (Server Hello)
TLS extensions (standard) "renegotiation info/#65281"
"EC point formats/#11" "session ticket/#35"
"status request/#5" "next protocol/#13172"
"supported versions/#43" "key share/#51"
"max fragment length/#1"
"application layer protocol negotiation/#16"
"encrypt-then-mac/#22"
"extended master secret/#23"
Session Ticket RFC 5077 hint 7200 seconds, session tickets keys seems to be rotated < daily
SSL Session ID support yes
Session Resumption Tickets no, ID: no
TLS clock skew Random values, no fingerprinting possible
Certificate Compression none
Client Authentication none
Signature Algorithm SHA256 with RSA
Server key size RSA 2048 bits (exponent is 65537)
Server key usage Digital Signature, Key Encipherment
Server extended key usage TLS Web Server Authentication, TLS Web Client Authentication
Serial / Fingerprints 025216E1C4998E2632AA5D1DA985B43C / SHA1 A4C3D451DE3F534F7FA42E620AAD501B528940F5
SHA256 61E56F95929E3F4CFFDC250DC4D9C9BCEEDDD8D9C1886ACB84B45BF39B60C002
Common Name (CN) www.example.org
subjectAltName (SAN) www.example.org example.net example.edu
example.com example.org www.example.com
www.example.edu www.example.net
Trust (hostname) Ok via SAN (same w/o SNI)
Chain of trust Ok
EV cert (experimental) no
Certificate Validity (UTC) 354 >= 60 days (2021-12-10 00:00 --> 2022-12-09 23:59)
ETS/"eTLS", visibility info not present
Certificate Revocation List http://crl3.digicert.com/DigiCertTLSRSASHA2562020CA1-4.crl
http://crl4.digicert.com/DigiCertTLSRSASHA2562020CA1-4.crl
OCSP URI http://ocsp.digicert.com
OCSP stapling offered, not revoked
OCSP must staple extension --
DNS CAA RR (experimental) not offered
Certificate Transparency yes (certificate extension)
Certificates provided 2
Issuer DigiCert TLS RSA SHA256 2020 CA1 (DigiCert Inc from US)
Intermediate cert validity #1: ok > 40 days (2031-04-13 23:59). DigiCert TLS RSA SHA256 2020 CA1 <-- DigiCert Global Root CA
Intermediate Bad OCSP (exp.) Ok
Testing HTTP header response @ "/"
HTTP Status Code 200 OK
HTTP clock skew 0 sec from localtime
Strict Transport Security not offered
Public Key Pinning --
Server banner ECS (agb/5295)
Application banner --
Cookie(s) (none issued at "/")
Security headers Cache-Control: max-age=604800
Reverse Proxy banner X-Cache: HIT
Testing vulnerabilities
Heartbleed (CVE-2014-0160) not vulnerable (OK), no heartbeat extension
CCS (CVE-2014-0224) not vulnerable (OK)
Ticketbleed (CVE-2016-9244), experiment. not vulnerable (OK)
ROBOT not vulnerable (OK)
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 deflate" 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), no SSLv3 support
TLS_FALLBACK_SCSV (RFC 7507) Downgrade attack prevention supported (OK)
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
https://censys.io/ipv4?q=61E56F95929E3F4CFFDC250DC4D9C9BCEEDDD8D9C1886ACB84B45BF39B60C002 could help you to find out
LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no common prime detected
BEAST (CVE-2011-3389) TLS1: ECDHE-RSA-AES128-SHA
ECDHE-RSA-AES256-SHA
DHE-RSA-AES128-SHA
DHE-RSA-AES256-SHA
DHE-RSA-CAMELLIA256-SHA
DHE-RSA-CAMELLIA128-SHA
AES256-SHA CAMELLIA256-SHA
AES128-SHA CAMELLIA128-SHA
DHE-RSA-SEED-SHA SEED-SHA
VULNERABLE -- but also supports higher protocols TLSv1.1 TLSv1.2 (likely mitigated)
LUCKY13 (CVE-2013-0169), experimental potentially VULNERABLE, uses cipher block chaining (CBC) ciphers with TLS. Check patches
Winshock (CVE-2014-6321), experimental not vulnerable (OK)
RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK)
Running client simulations (HTTP) via sockets
Browser Protocol Cipher Suite Name (OpenSSL) Forward Secrecy
------------------------------------------------------------------------------------------------
Android 4.4.2 TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Android 5.0.0 TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Android 6.0 TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Android 7.0 (native) TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Android 8.1 (native) TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Android 9.0 (native) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
Android 10.0 (native) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
Chrome 74 (Win 10) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
Chrome 79 (Win 10) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
Firefox 66 (Win 8.1/10) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
Firefox 71 (Win 10) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
IE 6 XP No connection
IE 8 Win 7 TLSv1.0 ECDHE-RSA-AES128-SHA 256 bit ECDH (P-256)
IE 8 XP No connection
IE 11 Win 7 TLSv1.2 DHE-RSA-AES128-GCM-SHA256 2048 bit DH
IE 11 Win 8.1 TLSv1.2 DHE-RSA-AES128-GCM-SHA256 2048 bit DH
IE 11 Win Phone 8.1 TLSv1.2 ECDHE-RSA-AES128-SHA256 256 bit ECDH (P-256)
IE 11 Win 10 TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Edge 15 Win 10 TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Edge 17 (Win 10) TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Opera 66 (Win 10) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
Safari 9 iOS 9 TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Safari 9 OS X 10.11 TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Safari 10 OS X 10.12 TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Safari 12.1 (iOS 12.2) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
Safari 13.0 (macOS 10.14.6) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
Apple ATS 9 iOS 9 TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Java 6u45 No connection
Java 7u25 TLSv1.0 ECDHE-RSA-AES128-SHA 256 bit ECDH (P-256)
Java 8u161 TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
Java 11.0.2 (OpenJDK) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
Java 12.0.1 (OpenJDK)
TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
OpenSSL 1.0.2e TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
OpenSSL 1.1.0l (Debian) TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256 256 bit ECDH (P-256)
OpenSSL 1.1.1d (Debian) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
Thunderbird (68.3) TLSv1.3 TLS_AES_256_GCM_SHA384 256 bit ECDH (P-256)
Rating (experimental)
Rating specs (not complete) SSL Labs's 'SSL Server Rating Guide' (version 2009q from 2020-01-30)
Specification documentation https://github.com/ssllabs/research/wiki/SSL-Server-Rating-Guide
Protocol Support (weighted) 95 (28)
Key Exchange (weighted) 90 (27)
Cipher Strength (weighted) 90 (36)
Final Score 91
Overall Grade B
Grade cap reasons Grade capped to B. TLS 1.1 offered
Grade capped to B. TLS 1.0 offered
Grade capped to A. HSTS is not offered
Generate JSON/CSV/HTML output
Use --jsonfile, --csvfile and --htmlfile to generate JSON, CSV and HTML output.
Example:
# Generate JSON output
docker run --rm -v `pwd`:/mnt drwetter/testssl.sh --jsonfile=/mnt/report.json https://www.example.com
# Generate CSV output
docker run --rm -v `pwd`:/mnt drwetter/testssl.sh --csvfile=/mnt/report.csv https://www.example.com
# Generate HTML output
docker run --rm -v `pwd`:/mnt drwetter/testssl.sh --htmlfile=/mnt/report.html https://www.example.com
You can also generate multiple report at the same time. For example, the follow command generate JSON, CSV and HTML outputs:
docker run --rm -v `pwd`:/mnt drwetter/testssl.sh --htmlfile=/mnt/report.html --jsonfile=/mnt/report.json --csvfile=/mnt/report.csv https://www.example.com
Note
By default, if the output file already exist, testssl.sh will not override it and command will fail with an error, like following error message:
Fatal error: non-empty "/mnt/report.json" exists. Either use "--append" or (re)move it
In this case, you need rename exist output file or delete it.
Test server default config
Use -S, --server-defaults to displays the server’s default picks and certificate info:
$ docker run --rm drwetter/testssl.sh -S https://www.example.com
...
Testing server defaults (Server Hello)
TLS extensions (standard) "renegotiation info/#65281"
"EC point formats/#11" "session ticket/#35"
"status request/#5" "next protocol/#13172"
"supported versions/#43" "key share/#51"
"max fragment length/#1"
"application layer protocol negotiation/#16"
"encrypt-then-mac/#22"
"extended master secret/#23"
Session Ticket RFC 5077 hint 7200 seconds, session tickets keys seems to be rotated < daily
SSL Session ID support yes
Session Resumption Tickets no, ID: no
TLS clock skew Random values, no fingerprinting possible
Certificate Compression none
Client Authentication none
Signature Algorithm SHA256 with RSA
Server key size RSA 2048 bits (exponent is 65537)
Server key usage Digital Signature, Key Encipherment
Server extended key usage TLS Web Server Authentication, TLS Web Client Authentication
Serial / Fingerprints 025216E1C4998E2632AA5D1DA985B43C / SHA1 A4C3D451DE3F534F7FA42E620AAD501B528940F5
SHA256 61E56F95929E3F4CFFDC250DC4D9C9BCEEDDD8D9C1886ACB84B45BF39B60C002
Common Name (CN) www.example.org
subjectAltName (SAN) www.example.org example.net example.edu
example.com example.org www.example.com
www.example.edu www.example.net
Trust (hostname) Ok via SAN (same w/o SNI)
Chain of trust Ok
EV cert (experimental) no
Certificate Validity (UTC) 354 >= 60 days (2021-12-10 00:00 --> 2022-12-09 23:59)
ETS/"eTLS", visibility info not present
Certificate Revocation List http://crl3.digicert.com/DigiCertTLSRSASHA2562020CA1-4.crl
http://crl4.digicert.com/DigiCertTLSRSASHA2562020CA1-4.crl
OCSP URI http://ocsp.digicert.com
OCSP stapling offered, not revoked
OCSP must staple extension --
DNS CAA RR (experimental) not offered
Certificate Transparency yes (certificate extension)
Certificates provided 2
Issuer DigiCert TLS RSA SHA256 2020 CA1 (DigiCert Inc from US)
Intermediate cert validity #1: ok > 40 days (2031-04-13 23:59). DigiCert TLS RSA SHA256 2020 CA1 <-- DigiCert Global Root CA
Intermediate Bad OCSP (exp.) Ok
Test server prefer protocol+cipher suites
Use -P, --server-preference to displays the server’s prefer protocol+cipher:
$ docker run --rm drwetter/testssl.sh --server-preference https://www.example.com
...
Testing server's cipher preferences
Has server cipher order? yes (OK) -- TLS 1.3 and below
Negotiated protocol TLSv1.3
Negotiated cipher TLS_AES_256_GCM_SHA384, 256 bit ECDH (P-256)
Cipher per protocol
Hexcode Cipher Suite Name (OpenSSL) KeyExch. Encryption Bits Cipher Suite Name (IANA/RFC)
-----------------------------------------------------------------------------------------------------------------------------
SSLv2 (listed by strength)
-
SSLv3 (server order)
-
TLSv1 (server order)
xc013 ECDHE-RSA-AES128-SHA ECDH 256 AES 128 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
xc014 ECDHE-RSA-AES256-SHA ECDH 256 AES 256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
x33 DHE-RSA-AES128-SHA DH 2048 AES 128 TLS_DHE_RSA_WITH_AES_128_CBC_SHA
x39 DHE-RSA-AES256-SHA DH 2048 AES 256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA
x88 DHE-RSA-CAMELLIA256-SHA DH 2048 Camellia 256 TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
x45 DHE-RSA-CAMELLIA128-SHA DH 2048 Camellia 128 TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
x35 AES256-SHA RSA AES 256 TLS_RSA_WITH_AES_256_CBC_SHA
x84 CAMELLIA256-SHA RSA Camellia 256 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
x2f AES128-SHA RSA AES 128 TLS_RSA_WITH_AES_128_CBC_SHA
x41 CAMELLIA128-SHA RSA Camellia 128 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
x9a DHE-RSA-SEED-SHA DH 2048 SEED 128 TLS_DHE_RSA_WITH_SEED_CBC_SHA
x96 SEED-SHA RSA SEED 128 TLS_RSA_WITH_SEED_CBC_SHA
TLSv1.1 (server order)
xc013 ECDHE-RSA-AES128-SHA ECDH 256 AES 128 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
xc014 ECDHE-RSA-AES256-SHA ECDH 256 AES 256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
x33 DHE-RSA-AES128-SHA DH 2048 AES 128 TLS_DHE_RSA_WITH_AES_128_CBC_SHA
x39 DHE-RSA-AES256-SHA DH 2048 AES 256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA
x88 DHE-RSA-CAMELLIA256-SHA DH 2048 Camellia 256 TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
x45 DHE-RSA-CAMELLIA128-SHA DH 2048 Camellia 128 TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
x35 AES256-SHA RSA AES 256 TLS_RSA_WITH_AES_256_CBC_SHA
x84 CAMELLIA256-SHA RSA Camellia 256 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
x2f AES128-SHA RSA AES 128 TLS_RSA_WITH_AES_128_CBC_SHA
x41 CAMELLIA128-SHA RSA Camellia 128 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
x9a DHE-RSA-SEED-SHA DH 2048 SEED 128 TLS_DHE_RSA_WITH_SEED_CBC_SHA
x96 SEED-SHA RSA SEED 128 TLS_RSA_WITH_SEED_CBC_SHA
TLSv1.2 (server order)
xc02f ECDHE-RSA-AES128-GCM-SHA256 ECDH 256 AESGCM 128 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
xc030 ECDHE-RSA-AES256-GCM-SHA384 ECDH 256 AESGCM 256 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
x9e DHE-RSA-AES128-GCM-SHA256 DH 2048 AESGCM 128 TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
x9f DHE-RSA-AES256-GCM-SHA384 DH 2048 AESGCM 256 TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
xc027 ECDHE-RSA-AES128-SHA256 ECDH 256 AES 128 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
xc013 ECDHE-RSA-AES128-SHA ECDH 256 AES 128 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
xc028 ECDHE-RSA-AES256-SHA384 ECDH 256 AES 256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
xc014 ECDHE-RSA-AES256-SHA ECDH 256 AES 256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
x67 DHE-RSA-AES128-SHA256 DH 2048 AES 128 TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
x33 DHE-RSA-AES128-SHA DH 2048 AES 128 TLS_DHE_RSA_WITH_AES_128_CBC_SHA
x6b DHE-RSA-AES256-SHA256 DH 2048 AES 256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
x39 DHE-RSA-AES256-SHA DH 2048 AES 256 TLS_DHE_RSA_WITH_AES_256_CBC_SHA
x9c AES128-GCM-SHA256 RSA AESGCM 128 TLS_RSA_WITH_AES_128_GCM_SHA256
x88 DHE-RSA-CAMELLIA256-SHA DH 2048 Camellia 256 TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA
x45 DHE-RSA-CAMELLIA128-SHA DH 2048 Camellia 128 TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA
x35 AES256-SHA RSA AES 256 TLS_RSA_WITH_AES_256_CBC_SHA
x84 CAMELLIA256-SHA RSA Camellia 256 TLS_RSA_WITH_CAMELLIA_256_CBC_SHA
x2f AES128-SHA RSA AES 128 TLS_RSA_WITH_AES_128_CBC_SHA
x41 CAMELLIA128-SHA RSA Camellia 128 TLS_RSA_WITH_CAMELLIA_128_CBC_SHA
x9a DHE-RSA-SEED-SHA DH 2048 SEED 128 TLS_DHE_RSA_WITH_SEED_CBC_SHA
x96 SEED-SHA RSA SEED 128 TLS_RSA_WITH_SEED_CBC_SHA
TLSv1.3 (server order)
x1302 TLS_AES_256_GCM_SHA384 ECDH 256 AESGCM 256 TLS_AES_256_GCM_SHA384
x1303 TLS_CHACHA20_POLY1305_SHA256 ECDH 256 ChaCha20 256 TLS_CHACHA20_POLY1305_SHA256
x1301 TLS_AES_128_GCM_SHA256 ECDH 256 AESGCM 128 TLS_AES_128_GCM_SHA256
testssl.sh usage quick reference
Use --help to get all the available command line options:
$ docker run --rm drwetter/testssl.sh --help
"testssl.sh [options] <URI>" or "testssl.sh <options>"
"testssl.sh <option>", where <option> is mostly standalone and one of:
--help what you're looking at
-b, --banner displays banner + version of testssl.sh
-v, --version same as previous
-V, --local [pattern] pretty print all local ciphers (of openssl only). If search pattern supplied: it is an
an ignore case word pattern of cipher hexcode or any other string in its name, kx or bits
"testssl.sh [options] <URI>", where <URI> is:
<URI> host|host:port|URL|URL:port port 443 is default, URL can only contain HTTPS as a protocol
and [options] is/are:
-t, --starttls <protocol> Does a run against a STARTTLS enabled service which is one of ftp, smtp, lmtp, pop3, imap,
xmpp, xmpp-server, telnet, ldap, nntp, postgres, mysql
--xmpphost <to_domain> For STARTTLS xmpp or xmpp-server checks it supplies the domainname (like SNI)
--mx <domain/host> Tests MX records from high to low priority (STARTTLS, port 25)
--file/-iL <fname> Mass testing option: Reads one testssl.sh command line per line from <fname>.
Can be combined with --serial or --parallel. Implicitly turns on "--warnings batch".
Text format 1: Comments via # allowed, EOF signals end of <fname>
Text format 2: nmap output in greppable format (-oG), 1 port per line allowed
--mode <serial|parallel> Mass testing to be done serial (default) or parallel (--parallel is shortcut for the latter)
--warnings <batch|off> "batch" doesn't continue when a testing error is encountered, off continues and skips warnings
--connect-timeout <seconds> useful to avoid hangers. Max <seconds> to wait for the TCP socket connect to return
--openssl-timeout <seconds> useful to avoid hangers. Max <seconds> to wait before openssl connect will be terminated
single check as <options> ("testssl.sh URI" does everything except -E and -g):
-e, --each-cipher checks each local cipher remotely
-E, --cipher-per-proto checks those per protocol
-s, --std, --categories tests standard cipher categories by strength
-f, --fs, --nsa checks forward secrecy settings
-p, --protocols checks TLS/SSL protocols (including SPDY/HTTP2)
-g, --grease tests several server implementation bugs like GREASE and size limitations
-S, --server-defaults displays the server's default picks and certificate info
-P, --server-preference displays the server's picks: protocol+cipher
-x, --single-cipher <pattern> tests matched <pattern> of ciphers
(if <pattern> not a number: word match)
-c, --client-simulation test client simulations, see which client negotiates with cipher and protocol
-h, --header, --headers tests HSTS, HPKP, server/app banner, security headers, cookie, reverse proxy, IPv4 address
-U, --vulnerable tests all (of the following) vulnerabilities (if applicable)
-H, --heartbleed tests for Heartbleed vulnerability
-I, --ccs, --ccs-injection tests for CCS injection vulnerability
-T, --ticketbleed tests for Ticketbleed vulnerability in BigIP loadbalancers
--BB, --robot tests for Return of Bleichenbacher's Oracle Threat (ROBOT) vulnerability
--SI, --starttls-injection tests for STARTTLS injection issues
-R, --renegotiation tests for renegotiation vulnerabilities
-C, --compression, --crime tests for CRIME vulnerability (TLS compression issue)
-B, --breach tests for BREACH vulnerability (HTTP compression issue)
-O, --poodle tests for POODLE (SSL) vulnerability
-Z, --tls-fallback checks TLS_FALLBACK_SCSV mitigation
-W, --sweet32 tests 64 bit block ciphers (3DES, RC2 and IDEA): SWEET32 vulnerability
-A, --beast tests for BEAST vulnerability
-L, --lucky13 tests for LUCKY13
-WS, --winshock tests for winshock vulnerability
-F, --freak tests for FREAK vulnerability
-J, --logjam tests for LOGJAM vulnerability
-D, --drown tests for DROWN vulnerability
-4, --rc4, --appelbaum which RC4 ciphers are being offered?
tuning / connect options (most also can be preset via environment variables):
--fast omits some checks: using openssl for all ciphers (-e), show only first preferred cipher.
-9, --full includes tests for implementation bugs and cipher per protocol (could disappear)
--bugs enables the "-bugs" option of s_client, needed e.g. for some buggy F5s
--assume-http if protocol check fails it assumes HTTP protocol and enforces HTTP checks
--ssl-native fallback to checks with OpenSSL where sockets are normally used
--openssl <PATH> use this openssl binary (default: look in $PATH, $RUN_DIR of testssl.sh)
--proxy <host:port|auto> (experimental) proxy connects via <host:port>, auto: values from $env ($http(s)_proxy)
-6 also use IPv6. Works only with supporting OpenSSL version and IPv6 connectivity
--ip <ip> a) tests the supplied <ip> v4 or v6 address instead of resolving host(s) in URI
b) arg "one" means: just test the first DNS returns (useful for multiple IPs)
-n, --nodns <min|none> if "none": do not try any DNS lookups, "min" queries A, AAAA and MX records
--sneaky leave less traces in target logs: user agent, referer
--user-agent <user agent> set a custom user agent instead of the standard user agent
--ids-friendly skips a few vulnerability checks which may cause IDSs to block the scanning IP
--phone-out allow to contact external servers for CRL download and querying OCSP responder
--add-ca <CA files|CA dir> path to <CAdir> with *.pem or a comma separated list of CA files to include in trust check
--basicauth <user:pass> provide HTTP basic auth information.
--reqheader <header> add custom http request headers
output options (can also be preset via environment variables):
--quiet don't output the banner. By doing this you acknowledge usage terms normally appearing in the banner
--wide wide output for tests like RC4, BEAST. FS also with hexcode, kx, strength, RFC name
--show-each for wide outputs: display all ciphers tested -- not only succeeded ones
--mapping <openssl| openssl: use the OpenSSL cipher suite name as the primary name cipher suite name form (default)
iana|rfc -> use the IANA/(RFC) cipher suite name as the primary name cipher suite name form
no-openssl| -> don't display the OpenSSL cipher suite name, display IANA/(RFC) names only
no-iana|no-rfc> -> don't display the IANA/(RFC) cipher suite name, display OpenSSL names only
--color <0|1|2|3> 0: no escape or other codes, 1: b/w escape codes, 2: color (default), 3: extra color (color all ciphers)
--colorblind swap green and blue in the output
--debug <0-6> 1: screen output normal but keeps debug output in /tmp/. 2-6: see "grep -A 5 '^DEBUG=' testssl.sh"
--disable-rating Explicitly disables the rating output
file output options (can also be preset via environment variables)
--log, --logging logs stdout to '${NODE}-p${port}${YYYYMMDD-HHMM}.log' in current working directory (cwd)
--logfile|-oL <logfile> logs stdout to 'dir/${NODE}-p${port}${YYYYMMDD-HHMM}.log'. If 'logfile' is a dir or to a specified 'logfile'
--json additional output of findings to flat JSON file '${NODE}-p${port}${YYYYMMDD-HHMM}.json' in cwd
--jsonfile|-oj <jsonfile> additional output to the specified flat JSON file or directory, similar to --logfile
--json-pretty additional JSON structured output of findings to a file '${NODE}-p${port}${YYYYMMDD-HHMM}.json' in cwd
--jsonfile-pretty|-oJ <jsonfile> additional JSON structured output to the specified file or directory, similar to --logfile
--csv additional output of findings to CSV file '${NODE}-p${port}${YYYYMMDD-HHMM}.csv' in cwd or directory
--csvfile|-oC <csvfile> additional output as CSV to the specified file or directory, similar to --logfile
--html additional output as HTML to file '${NODE}-p${port}${YYYYMMDD-HHMM}.html'
--htmlfile|-oH <htmlfile> additional output as HTML to the specified file or directory, similar to --logfile
--out(f,F)ile|-oa/-oA <fname> log to a LOG,JSON,CSV,HTML file (see nmap). -oA/-oa: pretty/flat JSON.
"auto" uses '${NODE}-p${port}${YYYYMMDD-HHMM}'. If fname if a dir uses 'dir/${NODE}-p${port}${YYYYMMDD-HHMM}'
--hints additional hints to findings
--severity <severity> severities with lower level will be filtered for CSV+JSON, possible values <LOW|MEDIUM|HIGH|CRITICAL>
--append if (non-empty) <logfile>, <csvfile>, <jsonfile> or <htmlfile> exists, append to file. Omits any header
--overwrite if <logfile>, <csvfile>, <jsonfile> or <htmlfile> exists it overwrites it without any warning
--outprefix <fname_prefix> before '${NODE}.' above prepend <fname_prefix>
Options requiring a value can also be called with '=' e.g. testssl.sh -t=smtp --wide --openssl=/usr/bin/openssl <URI>.
<URI> always needs to be the last parameter.
Related pages:
- Jailbreak iPhone 8 iOS 16.2 with palera1n and use frida dump to decrypt ipa
- Use frida and objection to penetration test iOS app security
- OpenSSL CSR Examples: Self Signed Certificate and How to Start Test TLS/SSL Server/Client
- ECDSA signature verify in kotlin and Golang
- Test TLS Connection Ciphers TLS Version and Certificate with OpenSSL Command Line
- Running a DoH Client to encrypt all home DNS traffic
- Secure Squid Proxy Server
References
- testssl.sh
- testssl.sh on github
- Test TLS Connection Ciphers TLS Version and Certificate with OpenSSL Command Line
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