Bug#912277: apache2: does not start any more: AH01903: Failed to configure CA certificate chain!
Package: apache2
Version: 2.4.35-1
Severity: important
After a recent upgrade, apache2 does not start any more:
tglase@tglase:~ $ cat /var/log/apache2/error.log
[Mon Oct 29 20:18:58.090841 2018] [ssl:emerg] [pid 17306] AH01903: Failed to configure CA certificate chain!
[Mon Oct 29 20:18:58.090919 2018] [ssl:emerg] [pid 17306] AH02311: Fatal error initialising mod_ssl, exiting. See /var/log/apache2/error.log for more information
AH00016: Configuration Failed
The certificate itself and the chain are ok, though:
tglase@tglase:~ $ openssl verify -CApath /etc/ssl/certs -show_chain -purpose sslserver -verify_hostname tglase.lan.tarent.de -untrusted /etc/ssl/W_lan_tarent_de.ca /etc/ssl/W_lan_tarent_de.cer
/etc/ssl/W_lan_tarent_de.cer: OK
Chain:
depth=0: CN = *.lan.tarent.de (untrusted)
depth=1: C = US, O = DigiCert Inc, OU = www.digicert.com, CN = RapidSSL TLS RSA CA G1 (untrusted)
depth=2: C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root G2
Postfix, on the same system, using the same certificates…
smtpd_tls_cert_file = /etc/ssl/W_lan_tarent_de.cer
smtpd_tls_key_file = /etc/ssl/private/W_lan_tarent_de.key
smtpd_tls_CAfile = /etc/ssl/W_lan_tarent_de.ca
… runs fine, so this must be some regression in Apache2.
-- Package-specific info:
-- System Information:
Debian Release: buster/sid
APT prefers unreleased
APT policy: (500, 'unreleased'), (500, 'buildd-unstable'), (500, 'unstable')
Architecture: x32 (x86_64)
Foreign Architectures: i386, amd64
Kernel: Linux 4.18.0-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=C, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=C (charmap=UTF-8)
Shell: /bin/sh linked to /bin/lksh
Init: sysvinit (via /sbin/init)
Versions of packages apache2 depends on:
ii apache2-bin 2.4.35-1
ii apache2-data 2.4.35-1
ii apache2-utils 2.4.35-1
ii dpkg 1.19.2
ii lsb-base 9.20170808
ii mime-support 3.61
ii perl 5.26.2-7+b1
ii procps 2:3.3.15-2
Versions of packages apache2 recommends:
ii ssl-cert 1.0.39
Versions of packages apache2 suggests:
ii apache2-doc 2.4.35-1
pn apache2-suexec-pristine | apache2-suexec-custom <none>
ii dillo [www-browser] 3.0.5-4
ii links2 [www-browser] 2.17-1
ii lynx [www-browser] 2.8.9rel.1-2
ii opera-static [www-browser] 9.64.2480.gcc4.qt3
Versions of packages apache2-bin depends on:
ii libapr1 1.6.3-3
ii libaprutil1 1.6.1-3+b1
ii libaprutil1-dbd-pgsql 1.6.1-3+b1
ii libaprutil1-dbd-sqlite3 1.6.1-3+b1
ii libaprutil1-ldap 1.6.1-3+b1
ii libbrotli1 1.0.6-1
ii libc6 2.27-6
ii libcurl4 7.61.0-1
ii libjansson4 2.11-1
ii libldap-2.4-2 2.4.46+dfsg-5+x32.1
ii liblua5.2-0 5.2.4-1.1+b1
ii libnghttp2-14 1.34.0-1
ii libpcre3 2:8.39-11
ii libssl1.1 1.1.1-1
ii libxml2 2.9.4+dfsg1-7+b1
ii perl 5.26.2-7+b1
ii zlib1g 1:1.2.11.dfsg-1
Versions of packages apache2-bin suggests:
ii apache2-doc 2.4.35-1
pn apache2-suexec-pristine | apache2-suexec-custom <none>
ii dillo [www-browser] 3.0.5-4
ii links2 [www-browser] 2.17-1
ii lynx [www-browser] 2.8.9rel.1-2
ii opera-static [www-browser] 9.64.2480.gcc4.qt3
Versions of packages apache2 is related to:
ii apache2 2.4.35-1
ii apache2-bin 2.4.35-1
-- Configuration Files:
/etc/apache2/apache2.conf changed:
DefaultRuntimeDir ${APACHE_RUN_DIR}
PidFile ${APACHE_PID_FILE}
Timeout 300
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 5
User ${APACHE_RUN_USER}
Group ${APACHE_RUN_GROUP}
HostnameLookups Off
ErrorLog ${APACHE_LOG_DIR}/error.log
LogLevel warn
IncludeOptional mods-enabled/*.load
IncludeOptional mods-enabled/*.conf
Include ports.conf
<Directory />
Options FollowSymLinks
AllowOverride None
Require all denied
</Directory>
<Directory /usr/share>
AllowOverride None
Require all granted
</Directory>
<Directory /var/www/>
Options Indexes FollowSymLinks ExecCGI
AddHandler cgi-script .cgi
AllowOverride None
Require all granted
</Directory>
AccessFileName .htaccess
<FilesMatch "^\.ht">
Require all denied
</FilesMatch>
LogFormat "%v:%p %h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" vhost_combined
LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" combined
LogFormat "%h %l %u %t \"%r\" %>s %O" common
LogFormat "%{Referer}i -> %U" referer
LogFormat "%{User-agent}i" agent
IncludeOptional conf-enabled/*.conf
IncludeOptional sites-enabled/*.conf
/etc/apache2/sites-available/default-ssl.conf changed:
<IfModule mod_ssl.c>
<VirtualHost _default_:443>
ServerAdmin webmaster@localhost
DocumentRoot /var/www/html
# 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 ${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
# *.lan.tarent.de
SSLCertificateKeyFile /etc/ssl/private/W_lan_tarent_de.key
SSLCertificateFile /etc/ssl/W_lan_tarent_de.cer
SSLCertificateChainFile /etc/ssl/W_lan_tarent_de.ca
# 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/certs/ssl-cert-snakeoil.pem
#SSLCertificateKeyFile /etc/ssl/private/ssl-cert-snakeoil.key
# 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
</VirtualHost>
</IfModule>
-- no debconf information
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