client certificate error

Jan Just Keijser janjust at nikhef.nl
Wed Jun 30 08:32:58 UTC 2021


Hi,

On 30/06/21 00:23, Paulo Wollny wrote:
> Dear @ll
>
> My environment:
>
> OpenSSL 1.1.1f  31 Mar 2020
>
> Ubuntu 20.04
>
> Server version: Apache/2.4.41 (Ubuntu)
> Server built:   2021-06-17T18:27:53
>
> My problem:
>
> connecting to a secure server requiring client certificate, i get the 
> following error when presenting my certificate:
>
> ERR_BAD_SSL_CLIENT_AUTH_CERT
>
> It started to fail after the previous one voided and i issued a new one.
>
> CA, the same, server cert, renewed after previous voided.
>

this is an apache/mod_ssl issue and has little to do with openssl; from 
reading the logs the lines

[Tue Jun 29 19:15:45.592363 2021] [ssl:error] [pid 241357] [client 
127.0.0.1:57026] AH02261: Re-negotiation handshake failed

look suspicious - it means your client is connecting from 127.0.0.1 and 
your server is also listening on 127.0.0.1 ; is this really what you 
have in mind?

But again, this is an apache httpd/mod_sssl issue and does not belong on 
this list.

JJK

> My server conf:
>
> <VirtualHost *:443>
>                 ServerAdmin webmaster at localhost
>
>                 DocumentRoot /home/www/
>
>                 # Available loglevels: trace8, ..., trace1, debug, 
> info, notice, warn,
>                 # error, crit, alert, emerg.
>                 # It is also possible to configure the loglevel for 
> particular
>                 # modules, e.g.
>                 #LogLevel info ssl:warn
>
>                 ErrorLog /var/log/apache2/ssl_engine.log
>                 LogLevel debug
>
>                 #ErrorLog ${APACHE_LOG_DIR}/error.log
>                 CustomLog ${APACHE_LOG_DIR}/access.log combined
>
>                 # For most configuration files from conf-available/, 
> which are
>                 # enabled or disabled at a global level, it is 
> possible to
>                 # include a line for only one particular virtual host. 
> For example the
>                 # following line enables the CGI configuration for 
> this host only
>                 # after it has been globally disabled with "a2disconf".
>                 #Include conf-available/serve-cgi-bin.conf
>
>                 #   SSL Engine Switch:
>                 #   Enable/Disable SSL for this virtual host.
>                 SSLEngine on
>
>                 SSLProtocol all -SSLv3 -TLSv1.3
>                 #SSLProtocol all
>                 #SSLProtocol all -SSLv2 -SSLv3 -TLSv1 -TLSv1.1 -TLSv1.3
>                 SSLHonorCipherOrder on
>                 SSLCipherSuite "EECDH+ECDSA+AESGCM EECDH+aRSA+AESGCM 
> EECDH+ECDSA+SHA384 EECDH+ECDSA+SHA256 EECDH+aRSA+SHA384 
> EECDH+aRSA+SHA256 EECDH+aRSA+RC4 EECDH EDH+aRSA RC4 !aNULL !eNULL !LOW 
> !3DES !MD5 !EXP !PSK !SRP !DSS"
>
>                 #   A self-signed (snakeoil) certificate can be 
> created by installing
>                 #   the ssl-cert package. See
>                 #   /usr/share/doc/apache2/README.Debian.gz for more 
> info.
>                 #   If both key and certificate are stored in the same 
> file, only the
>                 #   SSLCertificateFile directive is needed.
>                 SSLCertificateFile /etc/ssl/private/server.crt
>                 SSLCertificateKeyFile /etc/ssl/private/server.key
>                 SSLCACertificatePath /etc/ssl/certs/
>                 #SSLCACertificateFile 
> /etc/ssl/certs/PSign_TrustCenter_Root_CA-I.pem
>                 SSLCACertificateFile /etc/ssl/private/fullchain.crt
>
>
>                 #   Server Certificate Chain:
>                 #   Point SSLCertificateChainFile at a file containing 
> the
>                 #   concatenation of PEM encoded CA certificates which 
> form the
>                 #   certificate chain for the server certificate. 
> Alternatively
>                 #   the referenced file can be the same as 
> SSLCertificateFile
>                 #   when the CA certificates are directly appended to 
> the server
>                 #   certificate for convinience.
>                 #SSLCertificateChainFile 
> /etc/apache2/ssl.crt/server-ca.crt
>
>                 #   Certificate Authority (CA):
>                 #   Set the CA certificate verification path where to 
> find CA
>                 #   certificates for client authentication or 
> alternatively one
>                 #   huge file containing all of them (file must be PEM 
> encoded)
>                 #   Note: Inside SSLCACertificatePath you need hash 
> symlinks
>                 #                to point to the certificate files. 
> Use the provided
>                 #                Makefile to update the hash symlinks 
> after changes.
>                 #SSLCACertificatePath /etc/ssl/certs/
>                 #SSLCACertificateFile /etc/apache2/ssl.crt/ca-bundle.crt
>
>                 #   Certificate Revocation Lists (CRL):
>                 #   Set the CA revocation path where to find CA CRLs 
> for client
>                 #   authentication or alternatively one huge file 
> containing all
>                 #   of them (file must be PEM encoded)
>                 #   Note: Inside SSLCARevocationPath you need hash 
> symlinks
>                 #                to point to the certificate files. 
> Use the provided
>                 #                Makefile to update the hash symlinks 
> after changes.
>                 #SSLCARevocationPath /etc/apache2/ssl.crl/
>                 #SSLCARevocationFile /etc/apache2/ssl.crl/ca-bundle.crl
>
>                 #   Client Authentication (Type):
>                 #   Client certificate verification type and depth. 
> Types are
>                 #   none, optional, require and optional_no_ca. Depth 
> is a
>                 #   number which specifies how deeply to verify the 
> certificate
>                 #   issuer chain before deciding the certificate is 
> not valid.
>                 #SSLVerifyClient require
>                 #SSLVerifyDepth  10
>
>                 #   SSL Engine Options:
>                 #   Set various options for the SSL engine.
>                 #   o FakeBasicAuth:
>                 #        Translate the client X.509 into a Basic 
> Authorisation.  This means that
>                 #        the standard Auth/DBMAuth methods can be used 
> for access control.  The
>                 #        user name is the `one line' version of the 
> client's X.509 certificate.
>                 #        Note that no password is obtained from the 
> user. Every entry in the user
>                 #        file needs this password: `xxj31ZMTZzkVA'.
>                 #   o ExportCertData:
>                 #        This exports two additional environment 
> variables: SSL_CLIENT_CERT and
>                 #        SSL_SERVER_CERT. These contain the 
> PEM-encoded certificates of the
>                 #        server (always existing) and the client (only 
> existing when client
>                 #        authentication is used). This can be used to 
> import the certificates
>                 #        into CGI scripts.
>                 #   o StdEnvVars:
>                 #        This exports the standard SSL/TLS related 
> `SSL_*' environment variables.
>                 #        Per default this exportation is switched off 
> for performance reasons,
>                 #        because the extraction step is an expensive 
> operation and is usually
>                 #        useless for serving static content. So one 
> usually enables the
>                 #        exportation for CGI and SSI requests only.
>                 #   o OptRenegotiate:
>                 #        This enables optimized SSL connection 
> renegotiation handling when SSL
>                 #        directives are used in per-directory context.
>                 #SSLOptions +FakeBasicAuth +ExportCertData +StrictRequire
>                 <FilesMatch "\.(cgi|shtml|phtml|php)$">
>                                 SSLOptions +StdEnvVars
>                 </FilesMatch>
>                 <Directory /usr/lib/cgi-bin>
>                                 SSLOptions +StdEnvVars
>                 </Directory>
>
>                 #   SSL Protocol Adjustments:
>                 #   The safe and default but still SSL/TLS standard 
> compliant shutdown
>                 #   approach is that mod_ssl sends the close notify 
> alert but doesn't wait for
>                 #   the close notify alert from client. When you need 
> a different shutdown
>                 #   approach you can use one of the following variables:
>                 #   o ssl-unclean-shutdown:
>                 #        This forces an unclean shutdown when the 
> connection is closed, i.e. no
>                 #        SSL close notify alert is send or allowed to 
> received.  This violates
>                 #        the SSL/TLS standard but is needed for some 
> brain-dead browsers. Use
>                 #        this when you receive I/O errors because of 
> the standard approach where
>                 #        mod_ssl sends the close notify alert.
>                 #   o ssl-accurate-shutdown:
>                 #        This forces an accurate shutdown when the 
> connection is closed, i.e. a
>                 #        SSL close notify alert is send and mod_ssl 
> waits for the close notify
>                 #        alert of the client. This is 100% SSL/TLS 
> standard compliant, but in
>                 #        practice often causes hanging connections 
> with brain-dead browsers. Use
>                 #        this only for browsers where you know that 
> their SSL implementation
>                 #        works correctly.
>                 #   Notice: Most problems of broken clients are also 
> related to the HTTP
>                 #   keep-alive facility, so you usually additionally 
> want to disable
>                 #   keep-alive for those clients, too. Use variable 
> "nokeepalive" for this.
>                 #   Similarly, one has to force some clients to use 
> HTTP/1.0 to workaround
>                 #   their broken HTTP/1.1 implementation. Use 
> variables "downgrade-1.0" and
>                 #   "force-response-1.0" for this.
>                 # BrowserMatch "MSIE [2-6]" \
>                 #               nokeepalive ssl-unclean-shutdown \
>                 #               downgrade-1.0 force-response-1.0
>
>
> # private
>        Alias /ssl/ /home/www/html-ssl-certs/
>        <location /ssl/>
>              SSLVerifyClient require
>              SSLVerifyDepth       5
>              SSLOptions +StdEnvVars +ExportCertData
>              AuthType Basic
>              AuthName "Protected User access required"
>              AuthUserFile /etc/apache2/.htpasswd
>              Require valid-user
>              DirectoryIndex phpinfo.php
>              DirectoryIndexRedirect permanent
>              Order deny,allow
>              Allow from all
>       </location>
>
>
>
> </VirtualHost>
>
>
>
> log shows:
>
> [Tue Jun 29 19:15:43.024571 2021] [socache_shmcb:debug] [pid 241359] 
> mod_socache_shmcb.c(530): AH00835: socache_shmcb_retrieve (0xae -> 
> subcache 14)
> [Tue Jun 29 19:15:43.024597 2021] [socache_shmcb:debug] [pid 241359] 
> mod_socache_shmcb.c(916): AH00851: shmcb_subcache_retrieve found no match
> [Tue Jun 29 19:15:43.024605 2021] [socache_shmcb:debug] [pid 241359] 
> mod_socache_shmcb.c(541): AH00836: leaving socache_shmcb_retrieve 
> successfully
> [Tue Jun 29 19:15:43.024632 2021] [ssl:debug] [pid 241359] 
> ssl_engine_kernel.c(2387): [client 127.0.0.1:57022] AH02044: No 
> matching SSL virtual host for servername localhost found (using 
> default/first virtual host)
> [Tue Jun 29 19:15:43.024700 2021] [ssl:debug] [pid 241359] 
> ssl_engine_kernel.c(2387): [client 127.0.0.1:57022] AH02044: No 
> matching SSL virtual host for servername localhost found (using 
> default/first virtual host)
> [Tue Jun 29 19:15:43.024711 2021] [core:debug] [pid 241359] 
> protocol.c(2313): [client 127.0.0.1:57022] AH03155: select protocol 
> from , choices=h2,http/1.1 for server hp15pw
> [Tue Jun 29 19:15:43.026143 2021] [ssl:info] [pid 241355] [client 
> 127.0.0.1:57024] AH01964: Connection to child 0 established (server 
> hp15pw:443)
> [Tue Jun 29 19:15:43.026407 2021] [socache_shmcb:debug] [pid 241355] 
> mod_socache_shmcb.c(530): AH00835: socache_shmcb_retrieve (0x07 -> 
> subcache 7)
> [Tue Jun 29 19:15:43.026424 2021] [socache_shmcb:debug] [pid 241355] 
> mod_socache_shmcb.c(916): AH00851: shmcb_subcache_retrieve found no match
> [Tue Jun 29 19:15:43.026429 2021] [socache_shmcb:debug] [pid 241355] 
> mod_socache_shmcb.c(541): AH00836: leaving socache_shmcb_retrieve 
> successfully
> [Tue Jun 29 19:15:43.026449 2021] [ssl:debug] [pid 241355] 
> ssl_engine_kernel.c(2387): [client 127.0.0.1:57024] AH02044: No 
> matching SSL virtual host for servername localhost found (using 
> default/first virtual host)
> [Tue Jun 29 19:15:43.026489 2021] [ssl:debug] [pid 241355] 
> ssl_engine_kernel.c(2387): [client 127.0.0.1:57024] AH02044: No 
> matching SSL virtual host for servername localhost found (using 
> default/first virtual host)
> [Tue Jun 29 19:15:43.026497 2021] [core:debug] [pid 241355] 
> protocol.c(2313): [client 127.0.0.1:57024] AH03155: select protocol 
> from , choices=h2,http/1.1 for server hp15pw
> [Tue Jun 29 19:15:43.321198 2021] [ssl:debug] [pid 241359] 
> ssl_engine_kernel.c(2254): [client 127.0.0.1:57022] AH02041: Protocol: 
> TLSv1.2, Cipher: ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)
> [Tue Jun 29 19:15:43.323322 2021] [ssl:debug] [pid 241359] 
> ssl_engine_kernel.c(415): [client 127.0.0.1:57022] AH02034: Initial 
> (No.1) HTTPS request received for child 4 (server hp15pw:443)
> [Tue Jun 29 19:15:43.323413 2021] [ssl:debug] [pid 241355] 
> ssl_engine_kernel.c(2254): [client 127.0.0.1:57024] AH02041: Protocol: 
> TLSv1.2, Cipher: ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)
> [Tue Jun 29 19:15:43.323733 2021] [ssl:debug] [pid 241359] 
> ssl_engine_kernel.c(782): [client 127.0.0.1:57022] AH02255: Changed 
> client verification type will force renegotiation
> [Tue Jun 29 19:15:43.323837 2021] [ssl:info] [pid 241359] [client 
> 127.0.0.1:57022] AH02221: Requesting connection re-negotiation
> [Tue Jun 29 19:15:43.323893 2021] [ssl:debug] [pid 241359] 
> ssl_engine_kernel.c(984): [client 127.0.0.1:57022] AH02260: Performing 
> full renegotiation: complete handshake protocol (client does support 
> secure renegotiation)
> [Tue Jun 29 19:15:43.324148 2021] [ssl:debug] [pid 241359] 
> ssl_engine_kernel.c(2254): [client 127.0.0.1:57022] AH02041: Protocol: 
> TLSv1.2, Cipher: ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)
> [Tue Jun 29 19:15:43.324265 2021] [ssl:info] [pid 241359] [client 
> 127.0.0.1:57022] AH02226: Awaiting re-negotiation handshake
> [Tue Jun 29 19:15:43.324869 2021] [ssl:debug] [pid 241359] 
> ssl_engine_kernel.c(2387): [client 127.0.0.1:57022] AH02044: No 
> matching SSL virtual host for servername localhost found (using 
> default/first virtual host)
> [Tue Jun 29 19:15:43.331104 2021] [ssl:error] [pid 241359] [client 
> 127.0.0.1:57022] AH02261: Re-negotiation handshake failed
> [Tue Jun 29 19:15:43.331256 2021] [ssl:debug] [pid 241359] 
> ssl_engine_io.c(1368): (70014)End of file found: [client 
> 127.0.0.1:57022] AH02007: SSL handshake interrupted by system [Hint: 
> Stop button pressed in browser?!]
> [Tue Jun 29 19:15:43.331328 2021] [ssl:info] [pid 241359] [client 
> 127.0.0.1:57022] AH01998: Connection closed to child 4 with abortive 
> shutdown (server hp15pw:443)
> [Tue Jun 29 19:15:45.526753 2021] [ssl:info] [pid 241355] (70014)End 
> of file found: [client 127.0.0.1:57024] AH01991: SSL input filter read 
> failed.
> [Tue Jun 29 19:15:45.527179 2021] [ssl:debug] [pid 241355] 
> ssl_engine_io.c(1102): [client 127.0.0.1:57024] AH02001: Connection 
> closed to child 0 with standard shutdown (server hp15pw:443)
> [Tue Jun 29 19:15:45.537952 2021] [ssl:info] [pid 241357] [client 
> 127.0.0.1:57026] AH01964: Connection to child 2 established (server 
> hp15pw:443)
> [Tue Jun 29 19:15:45.538859 2021] [socache_shmcb:debug] [pid 241357] 
> mod_socache_shmcb.c(530): AH00835: socache_shmcb_retrieve (0x68 -> 
> subcache 8)
> [Tue Jun 29 19:15:45.538910 2021] [socache_shmcb:debug] [pid 241357] 
> mod_socache_shmcb.c(916): AH00851: shmcb_subcache_retrieve found no match
> [Tue Jun 29 19:15:45.538929 2021] [socache_shmcb:debug] [pid 241357] 
> mod_socache_shmcb.c(541): AH00836: leaving socache_shmcb_retrieve 
> successfully
> [Tue Jun 29 19:15:45.538994 2021] [ssl:debug] [pid 241357] 
> ssl_engine_kernel.c(2387): [client 127.0.0.1:57026] AH02044: No 
> matching SSL virtual host for servername localhost found (using 
> default/first virtual host)
> [Tue Jun 29 19:15:45.539162 2021] [ssl:debug] [pid 241357] 
> ssl_engine_kernel.c(2387): [client 127.0.0.1:57026] AH02044: No 
> matching SSL virtual host for servername localhost found (using 
> default/first virtual host)
> [Tue Jun 29 19:15:45.539188 2021] [core:debug] [pid 241357] 
> protocol.c(2313): [client 127.0.0.1:57026] AH03155: select protocol 
> from , choices=h2,http/1.1 for server hp15pw
> [Tue Jun 29 19:15:45.574552 2021] [ssl:debug] [pid 241357] 
> ssl_engine_kernel.c(2254): [client 127.0.0.1:57026] AH02041: Protocol: 
> TLSv1.2, Cipher: ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)
> [Tue Jun 29 19:15:45.589868 2021] [ssl:debug] [pid 241357] 
> ssl_engine_kernel.c(415): [client 127.0.0.1:57026] AH02034: Initial 
> (No.1) HTTPS request received for child 2 (server hp15pw:443)
> [Tue Jun 29 19:15:45.590043 2021] [ssl:debug] [pid 241357] 
> ssl_engine_kernel.c(782): [client 127.0.0.1:57026] AH02255: Changed 
> client verification type will force renegotiation
> [Tue Jun 29 19:15:45.590051 2021] [ssl:info] [pid 241357] [client 
> 127.0.0.1:57026] AH02221: Requesting connection re-negotiation
> [Tue Jun 29 19:15:45.590124 2021] [ssl:debug] [pid 241357] 
> ssl_engine_kernel.c(984): [client 127.0.0.1:57026] AH02260: Performing 
> full renegotiation: complete handshake protocol (client does support 
> secure renegotiation)
> [Tue Jun 29 19:15:45.590251 2021] [ssl:debug] [pid 241357] 
> ssl_engine_kernel.c(2254): [client 127.0.0.1:57026] AH02041: Protocol: 
> TLSv1.2, Cipher: ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)
> [Tue Jun 29 19:15:45.590261 2021] [ssl:info] [pid 241357] [client 
> 127.0.0.1:57026] AH02226: Awaiting re-negotiation handshake
> [Tue Jun 29 19:15:45.590535 2021] [ssl:debug] [pid 241357] 
> ssl_engine_kernel.c(2387): [client 127.0.0.1:57026] AH02044: No 
> matching SSL virtual host for servername localhost found (using 
> default/first virtual host)
> [Tue Jun 29 19:15:45.592237 2021] [socache_shmcb:debug] [pid 241357] 
> mod_socache_shmcb.c(555): AH00837: socache_shmcb_remove (0x4c -> 
> subcache 12)
> [Tue Jun 29 19:15:45.592290 2021] [socache_shmcb:debug] [pid 241357] 
> mod_socache_shmcb.c(570): AH00839: leaving socache_shmcb_remove 
> successfully
> [Tue Jun 29 19:15:45.592363 2021] [ssl:error] [pid 241357] [client 
> 127.0.0.1:57026] AH02261: Re-negotiation handshake failed
> [Tue Jun 29 19:15:45.592456 2021] [ssl:error] [pid 241357] SSL Library 
> Error: error:1417C0C7:SSL routines:tls_process_client_certificate:peer 
> did not return a certificate -- No CAs known to server for verification?
> [Tue Jun 29 19:15:45.592643 2021] [ssl:debug] [pid 241357] 
> ssl_engine_io.c(1368): [client 127.0.0.1:57026] AH02007: SSL handshake 
> interrupted by system [Hint: Stop button pressed in browser?!]
> [Tue Jun 29 19:15:45.592662 2021] [ssl:info] [pid 241357] [client 
> 127.0.0.1:57026] AH01998: Connection closed to child 2 with abortive 
> shutdown (server hp15pw:443)
> root at hp15pw:/var/log/apache2#
>
> Any cue? I'm not being able to find out what is wrong.
>
> Thx in advance.
>
>
>



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