Sslscan

sslscan - Fast SSL/TLS scanner

Beschreibung

sslscan fragt SSL/TLS-Dienste (z. B. HTTPS) ab und meldet die verwendeten Protokollversionen, Cipher Suites, Schlüsselaustauschverfahren, Signaturalgorithmen und Zertifikate

Dies hilft dem Benutzer zu verstehen, welche Parameter vom Standpunkt der Sicherheit aus gesehen schwach sind

Terminal Colours

Kennzeichnung	Beschreibung
Red Background	NULL cipher (no encryption)
Red	Broken cipher (<= 40 bit), broken protocol (SSLv2 or SSLv3) or broken certificate signing algorithm (MD5)
Yellow	Weak cipher (<= 56 bit or RC4) or weak certificate signing algorithm (SHA-1)
Purple	Anonymous cipher (ADH or AECDH)

sslscan kann die Ergebnisse auch in eine XML-Datei ausgeben, damit sie von externen Programmen einfach genutzt werden können

Installation

# apt install sslscan

Anwendung

Scan a local HTTPS server

sslscan localhost
sslscan 127.0.0.1
sslscan 127.0.0.1:443
sslscan [::1]
sslscan [::1]:443

Syntax

sslscan [options] [host:port | host]

Optionen

GNU	Unix	Parameter	Beschreibung
--help			Show summary of options
--targets=		<file>	A file containing a list of hosts to check. Hosts can be supplied with ports (i.e. host:port). One target per line
--sni-name=		<name>	Use a different hostname for SNI
--ipv4	-4		Force IPv4 DNS resolution. Default is to try IPv4, and if that fails then fall back to IPv6
--ipv6	-6		Force IPv6 DNS resolution. Default is to try IPv4, and if that fails then fall back to IPv6
--show-certificate			Display certificate information
--show-certificates			Display the full certificate chain
--no-check-certificate			Don't flag certificates signed with weak algorithms (MD5 and SHA-1) or short (<2048 bit) RSA keys
--show-client-cas			Show a list of CAs that the server allows for client authentication. Will be blank for IIS/Schannel servers
--show-ciphers			Show a complete list of ciphers supported by sslscan
--show-cipher-ids			Print the hexadecimal cipher IDs
--iana-names			Use IANA/RFC cipher names rather than OpenSSL ones
--show-times			Show the time taken for each handshake in milliseconds. Note that only a single request is made with each cipher, and that the size of the ClientHello is not constant, so this should not be used for proper benchmarking or performance testing. You might want to also use --no-cipher-details to make the output a bit clearer
--ssl2			Only check if SSLv2 is enabled
--ssl3			Only check if SSLv3 is enabled
--tls10			Only check TLS 1.0 ciphers
--tls11			Only check TLS 1.1 ciphers
--tls12			Only check TLS 1.2 ciphers
--tls13			Only check TLS 1.3 ciphers
--tlsall			Only check TLS ciphers (versions 1.0, 1.1, 1.2, and 1.3)
--ocsp			Display OCSP status
--pk=		<file>	A file containing the private key or a PKCS#12 file containing a private key/certificate pair (as produced by MSIE and Netscape)
--pkpass=		<password>	The password for the private key or PKCS#12 file
--certs=		<file>	A file containing PEM/ASN1 formatted client certificates
--no-ciphersuites			Do not scan for supported ciphersuites
--no-fallback			Do not check for TLS Fallback Signaling Cipher Suite Value (fallback)
--no-renegotiation			Do not check for secure TLS renegotiation
--no-compression			Do not check for TLS compression (CRIME)
--no-heartbleed			Do not check for OpenSSL Heartbleed (CVE-2014-0160)
--no-groups			Do not enumerate key exchange groups
--show-sigs			Enumerate signature algorithms
--starttls-ftp			STARTTLS setup for FTP
--starttls-imap			STARTTLS setup for IMAP
--starttls-irc			STARTTLS setup for IRC
--starttls-ldap			STARTTLS setup for LDAP
--starttls-pop3			STARTTLS setup for POP3
--starttls-smtp			STARTTLS setup for SMTP
--starttls-mysql			STARTTLS setup for MySQL
--starttls-xmpp			STARTTLS setup for XMPP
--starttls-psql			STARTTLS setup for PostgreSQL
--xmpp-server			Perform a server-to-server XMPP connection. Try this if --starttls-xmpp is failing
--rdp			Send RDP preamble before starting scan
--bugs			Enables workarounds for SSL bugs
--timeout=		<sec>	Set socket timeout. Useful for hosts that fail to respond to ciphers they don't understand. Default is 3s
--connect-timeout=		<sec>	Set initial connection timeout. Useful for hosts that are slow to respond to the initial connect(). Default is 75s
--sleep=		<msec>	Pause between connections. Useful on STARTTLS SMTP services, or anything else that's performing rate limiting. Default is disabled
--xml=		<file>	Output results to an XML file. - can be used to mean stdout
--version			Show version of program
--verbose			Display verbose output
--no-cipher-details			Hide NIST EC curve name and EDH/RSA key length
--no-colour			Disable coloured output

Anhang

Siehe auch

• Sslscan

Dokumentation

Man-Pages

1. SSLSCAN(1)