I try to build HTTPS example on ODIN W2 with mbedOS and got the next problem:
Connecting to os.mbed.com:443
Starting the TLS handshake...
mbedtls_ssl_handshake() failed: -0x2700 (-9984): X509 - Certificate verification failed, e.g. CRL, CA or signature check failed
Error flag sets in file x509_crt.c, line 1925:
if( x509_profile_check_pk_alg( profile, child->sig_pk ) != 0 )
*flags |= MBEDTLS_X509_BADCERT_BAD_PK;
Anyone have ideas?
Related
I am making both server and client for an application, using the ACE library with OpenSSL. I am trying to get mutual authentication to work, o the server will only accept connections from trusted clients.
I have generated a CA key and cert, and used it to sign a server cert and a client cert (each with their own keys also). I seem to be loading the trusted store correctly, but I keep getting the error "peer did not return a certificate" during handshake.
Server side code:
ACE_SSL_Context *context = ACE_SSL_Context::instance();
context->set_mode(ACE_SSL_Context::SSLv23_server);
context->certificate("../ACE-server/server_cert.pem", SSL_FILETYPE_PEM);
context->private_key("../ACE-server/server_key.pem", SSL_FILETYPE_PEM);
if (context->load_trusted_ca("../ACE-server/trusted.pem", 0, false) == -1) {
ACE_ERROR_RETURN((LM_ERROR, "%p\n", "load_trusted_ca"), -1);
}
if (context->have_trusted_ca() <= 0) {
ACE_ERROR_RETURN((LM_ERROR, "%p\n", "have_trusted_ca"), -1);
}
Client side code:
ACE_SSL_Context *context = ACE_SSL_Context::instance();
context->set_mode(ACE_SSL_Context::SSLv23_client);
context->certificate("../ACE-client/client_cert.pem", SSL_FILETYPE_PEM);
context->private_key("../ACE-client/client_key.pem", SSL_FILETYPE_PEM);
I generated the certificates following these instructions: https://blog.codeship.com/how-to-set-up-mutual-tls-authentication/
And checking online, I found that if the .crt and .key files are readable, they should already be in .pem format and there is no need to convert them. So I just changed the extension and used them here.
Any help is appreciated!
My problem apparently was the same as seen here: OpenSSL client not sending client certificate
I was changing the SSL context after creating the SSL Socket. Now the mutual authentication works, but my client crashes when closing the connection. Though I don't know why that is yet.
In mandrill webhook, I added https://xxxx/mandrills/email_bounced_back
The error I got is:
Error: POST to https://xxxx/mandrills/email_bounced_back failed: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
I used https://www.sslshopper.com/ssl-checker to check and seems ok (green)
I am using cPanel & WHM 64.0 (build 20)
I want to find out the protocols supported by a target but the problem is that their are quite a number websites which are not supporting a particular version but when i performed handshake it was successful becz target surpassed the version that i gave and perform handshake on the supported version
[ it happened on only 1 website]
example : i passed a version :TLSVersion.TLS_1_2 but the handshake is performed using TLSv1_0 becz it is not supporting TLSVersion.TLS_1_2
Because of the above issue i want to check the version on handshake and i dont want to use scapy.ssl_tls
version = [SSL.SSLv23_METHOD,
SSL.TLSv1_METHOD,
SSL.TLSv1_1_METHOD,
SSL.TLSv1_2_METHOD]
context = OpenSSL.SSL.Context(version)
soc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
soc.settimeout(CONNECTION_TIMEOUT)
connection = OpenSSL.SSL.Connection(context,soc)
connection.connect((host,port))
connection.do_handshake()
#wants to check version here
i want to check the version on handshake
The relevant functions to check the version both client and server use for the remaining session in pyOpenSSL are get_protocol_version_name or get_protocol_version:
connection.do_handshake()
#wants to check version here
print(connection.get_protocol_version_name())
Note that these functions are only available since pyOpenSSL 0.16.0
Please not also that you cannot specify a list of TLS methods when creating the context but only a single method which essentially specifies the minimal TLS version supported by the client. Thus
context = OpenSSL.SSL.Context(SSL.TLSv1_METHOD)
allows the client to use TLS 1.0 and better. If you instead use SSL.TLSv1_2_METHOD the client would be restricted to TLS 1.2 and better and thus could not establish a SSL connection with a server supporting only TLS 1.0.
Find SSL Version after Handshake in OpenSSL...
If I am parsing what you want correctly... you want the protocol version like printed by openssl s_client:
$ openssl version
OpenSSL 1.1.0b 26 Sep 2016
$ openssl s_client -connect www.google.com:443 -servername www.google.com
CONNECTED(00000005)
depth=2 C = US, O = GeoTrust Inc., CN = GeoTrust Global CA
verify error:num=20:unable to get local issuer certificate
Server did acknowledge servername extension.
---
...
---
New, TLSv1.2, Cipher is ECDHE-RSA-CHACHA20-POLY1305
Server public key is 2048 bit
Secure Renegotiation IS supported
No ALPN negotiated
SSL-Session:
Protocol : TLSv1.2
...
The first message of "New, TLSv1.2" tells you about the cipher. That is, when is ECDHE-RSA-CHACHA20-POLY1305 first arrived in TLS. In the case of ECDHE-RSA-CHACHA20-POLY1305, the cipher suite was first seen in TLS 1.2.
The source code for s_client is located at <openssl src>/apps/s_client.c. The code responsible in OpenSSL 1.0.2 is around line 2210:
/* line 2210 */
c = SSL_get_current_cipher(s);
BIO_printf(bio, "%s, Cipher is %s\n",
SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
...
The second message of "Protocol: TLSv1.2" tells you the protocol version used during key exchange and subsequent cipher selection and bulk transfer.
The code responsible in OpenSSL 1.0.2 is <openssl src>/ssl/ssl_txt.c around line 105:
/* line 105 */
int SSL_SESSION_print(BIO *bp, const SSL_SESSION *x)
{
unsigned int i;
const char *s;
if (x == NULL)
goto err;
if (BIO_puts(bp, "SSL-Session:\n") <= 0)
goto err;
if (x->ssl_version == SSL2_VERSION)
s = "SSLv2";
else if (x->ssl_version == SSL3_VERSION)
s = "SSLv3";
else if (x->ssl_version == TLS1_2_VERSION)
s = "TLSv1.2";
else if (x->ssl_version == TLS1_1_VERSION)
s = "TLSv1.1";
else if (x->ssl_version == TLS1_VERSION)
s = "TLSv1";
else if (x->ssl_version == DTLS1_VERSION)
s = "DTLSv1";
else if (x->ssl_version == DTLS1_2_VERSION)
s = "DTLSv1.2";
else if (x->ssl_version == DTLS1_BAD_VER)
s = "DTLSv1-bad";
else
s = "unknown";
if (BIO_printf(bp, " Protocol : %s\n", s) <= 0)
goto err;
...
}
I want to find out the protocols supported by a target but the problem is that their are quite a number websites which are not supporting a particular version but when i performed handshake ...
This is a different problem. You should look at the source code for sslscan at SSLScan - Fast SSL Scanner to see how it works. The Sourceforge one seems abandoned. It lacks SNI and other new features, like secure negotiation and ALPN.
You might try this sslscan from GitHub: rbsec/sslscan. The GitHub one is actively maintained and seems to be more up to date.
example : i passed a version :TLSVersion.TLS_1_2 but the handshake is performed using TLSv1_0 becz it is not supporting TLSVersion.TLS_1_2
This will not happen. TLS specifies one protocol version only. The idea is your try TLS 1.2. If it fails, then you fall back to TLS 1.1. If it fails, then you fall back to TLS 1.0. Ad infinitum.
The try-and-fallback approach is the reason for RFC 7504, TLS Fallback Signaling Cipher Suite Value (SCSV) for Preventing Protocol Downgrade Attacks. This was an awful band-aide from the Browser crowd. See, for example, Last Call: <draft-ietf-tls-downgrade-scsv-03.txt> (TLS Fallback Signaling Cipher Suite Value (SCSV) for Preventing Protocol Downgrade Attacks) to Proposed Standard.
TLS does not accept a range of protocol versions like many folks think. We have tried to get it changed a few times. See, for example, A new TLS version negotiation mechanism.
I'm trying to configure rsyslog tls with relp but keep getting errors.
I'm using RHEL 7.2 with rsyslog 8.15.
I do manage to send messages using relp + tls but without using the certificates. When I'm adding the certificates I'm getting the following error:
Jan 20 11:00:17 ip-10-0-0-114 rsyslogd-2353: imrelp[514]: error 'Failed to set certificate trust files [gnutls error -64: Error while reading file.]', object 'lstn 514' - input may not work as intended [v8.15.0 try http://www.rsyslog.com/e/2353 ]
Jan 20 11:00:17 ip-10-0-0-114 rsyslogd-2291: imrelp: could not activate relp listner, code 10031 [v8.15.0 try http://www.rsyslog.com/e/2291 ]
Server conf:
module(load="imrelp" ruleset="relp")
input(type="imrelp" port="514" tls="on"
tls.caCert="/home/ec2-user/rsyslog/ca.pem"
tls.myCert="/home/ec2-user/rsyslog/server-cert.pem"
tls.myPrivKey="/home/ec2-user/rsyslog/server-key.pem"
tls.authmode="name"
tls.permittedpeer=["client.example.co"]
)
ruleset(name="relp") {
action(type="omfile" file="/var/log/relptls2")
}
The following is the client configuration:
module(load="omrelp")
action(type="omrelp" target="10.0.0.114" port="514" tls="on"
tls.caCert="/home/ec2-user/rsyslog/ca.pem"
tls.myCert="/home/ec2-user/rsyslog/client-cert.pem"
tls.myPrivKey="/home/ec2-user/rsyslog/client-key.pem"
tls.authmode="name"
tls.permittedpeer=["server.example.co"]
)
When I remove the tls cert fields from the server configration I get client error:
Jan 20 10:35:29 ip-10-0-0-206 rsyslogd-2353: omrelp[10.0.0.114:514]:
error 'Failed to set certificate trust file [gnutls error -64: Error
while reading file.]', object 'conn to srvr 10.0.0.114:514' - action
may not work as intended [v8.15.0 try http://www.rsyslog.com/e/2353 ]
Help would be really really appreciated as I'm stack with this for long time.
Thanks!!!!
The gnutls error -64: Error while reading file error message means either:
The certificates actual path is different from what is in the
configuration file
Rsyslog service cannot read the certificates
because of permission problem
In case of permission issue you may move the certificates under /etc/rsyslog.d
In case of path issue, just fix the path :)
I constructed a apache mod_perl web service based on SSL.Of course, From my browser, I can access the web service using https (Of cource,I add my self-signed CA cert to brower's trust list) access the web service,but when using SOAP::Lite , I failed.
This is my source code:
$ENV{HTTPS_CERT_FILE} = '/etc/pki/tls/mycerts/client.crt';
$ENV{HTTPS_KEY_FILE} = '/etc/pki/tls/mycerts/client.key';
#$ENV{HTTPS_CA_FILE} = '/etc/pki/tls/mycerts/ca.crt';
#$ENV{HTTPS_CA_DIR} = '/etc/pki/tls/mycerts/ca.key';
#$ENV{HTTPS_VERSION} = 3;
$ENV{SSL_ca_file}='/etc/pki/tls/mycerts/ca.crt';
$ENV{SSL_ca_pah}='/etc/pki/tls/mycerts/';
#$ENV{SSL_cert_file}='/etc/pki/tls/mycerts/client.key';
#$ENV{SSL_key_file}='/etc/pki/tls/mycerts/client.crt';
$ENV{PERL_LWP_SSL_CA_FILE}='/etc/pki/tls/mycerts/ca.crt';
$ENV{PERL_LWP_SSL_VERIFY_HOSTNAME}=1;
#$ENV{PERL_LWP_SSL_CA_PATH}='/etc/pki/tls/mycerts/';
use SOAP::Lite;
my $name = "wuchang";
print "\n\nCalling the SOAP Server to say hello\n\n";
print SOAP::Lite
-> uri('http://localhost/mod_perl_rules1')
-> proxy('https://localhost/mod_perl_rules1')
-> result;
I get the response:
500 Can't connect to localhost:443 (certificate verify failed) at /root/Desktop/test.pl line 18
I really cannot debug this.I don't know if my certificate format is incorrect.I use openssl to generate my cert,including client cert ,server cert and my self-signed ca cert and I make CA sign the client and server cert.I really don't know what is going wrong/.
Simply tell it not to check the certificate. Set SSL Verify to zero like this:
$ENV{PERL_LWP_SSL_VERIFY_HOSTNAME}=0;