mirror of
https://github.com/docker-mailserver/docker-mailserver.git
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use ffdhe4096 for DHE params
use by default ffdhe4096 for DHE params use by default ffdhe4096 for DHE params
This commit is contained in:
youtous
parent
f60de0c66e
commit
47fac2706f
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@ -163,6 +163,9 @@ RUN chmod 755 /etc/init.d/postgrey && \
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# Copy PostSRSd Config
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COPY target/postsrsd/postsrsd /etc/default/postsrsd
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# Copy shared ffdhe params
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COPY target/shared/ffdhe4096.pem /etc/postfix/shared/ffdhe4096.pem
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# Enables Amavis
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COPY target/amavis/conf.d/* /etc/amavis/conf.d/
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RUN sed -i -r 's/#(@| \\%)bypass/\1bypass/g' /etc/amavis/conf.d/15-content_filter_mode && \
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@ -43,9 +43,8 @@ ssl_key = </etc/dovecot/ssl/dovecot.key
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#ssl_cert_username_field = commonName
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# SSL DH parameters
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# Generate new params with `openssl dhparam -out /etc/dovecot/dh.pem 4096`
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# Or migrate from old ssl-parameters.dat file with the command dovecot
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# gives on startup when ssl_dh is unset.
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# This parameter will be optional in dovecot 2.3 https://wiki2.dovecot.org/Upgrading/2.3#dhparams
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# Until non-ECC based DH algorithms are dropped, please use recommended pre-defined DHE Groups https://github.com/internetstandards/dhe_groups
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ssl_dh = </etc/dovecot/dh.pem
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# Minimum SSL protocol version to use. Potentially recognized values are SSLv3,
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@ -1364,15 +1364,16 @@ function _setup_postfix_dhparam() {
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if [ "$ONE_DIR" = 1 ];then
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DHPARAMS_FILE=/var/mail-state/lib-shared/dhparams.pem
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if [ ! -f $DHPARAMS_FILE ]; then
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notify 'inf' "Generate new shared dhparams (postfix)"
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mkdir -p $(dirname "$DHPARAMS_FILE")
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openssl dhparam -out $DHPARAMS_FILE 2048
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notify 'inf' "Use ffdhe4096 for dhparams (postfix)"
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rm -f /etc/postfix/dhparams.pem && cp /etc/postfix/shared/ffdhe4096.pem /etc/postfix/dhparams.pem
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else
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notify 'inf' "Use postfix dhparams that was generated previously"
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fi
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notify 'warn' "Using self-generated dhparams is considered as insecure."
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notify 'warn' "Unless you known what you are doing, please remove /var/mail-state/lib-shared/dhparams.pem."
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# Copy from the state directory to the working location
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rm -f /etc/postfix/dhparams.pem && cp $DHPARAMS_FILE /etc/postfix/dhparams.pem
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# Copy from the state directory to the working location
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rm -f /etc/postfix/dhparams.pem && cp $DHPARAMS_FILE /etc/postfix/dhparams.pem
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fi
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else
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if [ ! -f /etc/postfix/dhparams.pem ]; then
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if [ -f /etc/dovecot/dh.pem ]; then
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@ -1380,13 +1381,17 @@ function _setup_postfix_dhparam() {
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cp /etc/dovecot/dh.pem /etc/postfix/dhparams.pem
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elif [ -f /tmp/docker-mailserver/dhparams.pem ]; then
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notify 'inf' "Copy pre-generated dhparams to postfix"
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notify 'warn' "Using self-generated dhparams is considered as insecure."
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notify 'warn' "Unless you known what you are doing, please remove /var/mail-state/lib-shared/dhparams.pem."
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cp /tmp/docker-mailserver/dhparams.pem /etc/postfix/dhparams.pem
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else
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notify 'inf' "Generate new dhparams for postfix"
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openssl dhparam -out /etc/postfix/dhparams.pem 2048
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notify 'inf' "Use ffdhe4096 for dhparams (postfix)"
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cp /etc/postfix/shared/ffdhe4096.pem /etc/postfix/dhparams.pem
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fi
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else
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notify 'inf' "Use existing postfix dhparams"
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notify 'warn' "Using self-generated dhparams is considered as insecure."
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notify 'warn' "Unless you known what you are doing, please remove /etc/postfix/dhparams.pem."
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fi
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fi
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}
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@ -1396,15 +1401,16 @@ function _setup_dovecot_dhparam() {
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if [ "$ONE_DIR" = 1 ];then
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DHPARAMS_FILE=/var/mail-state/lib-shared/dhparams.pem
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if [ ! -f $DHPARAMS_FILE ]; then
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notify 'inf' "Generate new shared dhparams (dovecot)"
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mkdir -p $(dirname "$DHPARAMS_FILE")
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openssl dhparam -out $DHPARAMS_FILE 2048
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notify 'inf' "Use ffdhe4096 for dhparams (dovecot)"
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rm -f /etc/dovecot/dh.pem && cp /etc/postfix/shared/ffdhe4096.pem /etc/dovecot/dh.pem
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else
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notify 'inf' "Use dovecot dhparams that was generated previously"
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fi
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notify 'warn' "Using self-generated dhparams is considered as insecure."
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notify 'warn' "Unless you known what you are doing, please remove /var/mail-state/lib-shared/dhparams.pem."
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# Copy from the state directory to the working location
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rm -f /etc/dovecot/dh.pem && cp $DHPARAMS_FILE /etc/dovecot/dh.pem
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# Copy from the state directory to the working location
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rm -f /etc/dovecot/dh.pem && cp $DHPARAMS_FILE /etc/dovecot/dh.pem
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fi
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else
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if [ ! -f /etc/dovecot/dh.pem ]; then
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if [ -f /etc/postfix/dhparams.pem ]; then
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@ -1412,13 +1418,17 @@ function _setup_dovecot_dhparam() {
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cp /etc/postfix/dhparams.pem /etc/dovecot/dh.pem
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elif [ -f /tmp/docker-mailserver/dhparams.pem ]; then
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notify 'inf' "Copy pre-generated dhparams to dovecot"
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notify 'warn' "Using self-generated dhparams is considered as insecure."
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notify 'warn' "Unless you known what you are doing, please remove /tmp/docker-mailserver/dhparams.pem."
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cp /tmp/docker-mailserver/dhparams.pem /etc/dovecot/dh.pem
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else
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notify 'inf' "Generate new dhparams for dovecot"
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openssl dhparam -out /etc/dovecot/dh.pem 2048
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notify 'inf' "Use ffdhe4096 for dhparams (dovecot)"
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cp /etc/postfix/shared/ffdhe4096.pem /etc/dovecot/dh.pem
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fi
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else
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notify 'inf' "Use existing dovecot dhparams"
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notify 'warn' "Using self-generated dhparams is considered as insecure."
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notify 'warn' "Unless you known what you are doing, please remove /etc/dovecot/dh.pem."
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fi
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fi
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}
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@ -1,8 +0,0 @@
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-----BEGIN DH PARAMETERS-----
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MIIBCAKCAQEAlYgX/PXMu60WVkgKXOqnT562wd2F3l1WDwyn7DLWDqb9rCI6SAB8
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8uDkImAeoRFQycL77fXBqO9KKVk5x569Qjltacbw4/taOhWPAq/+6Wf5bZsUEp5g
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wD+hLvgYn/0pdGkjiAJ+jlRBxarF9lJac4QPztqw3qJPtVdIKbmo58hoxERIthD2
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f/ZkGjaZXzOIvD8Ai0NQ+H4k5DK5dLlFI78XbrsH161t4Jcspq+v5VUdUyUMAvti
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4peK0RgHw47h90kkee+qIf5F+WWSw28tjkbILWx2ld/bN59eZj4itb3UUw/OZRpC
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Y0pOBOvl1wp5PS+pUJAMsg6PR50yPNYREwIBAg==
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-----END DH PARAMETERS-----
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@ -1,8 +0,0 @@
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-----BEGIN DH PARAMETERS-----
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MIIBCAKCAQEAlYgX/PXMu60WVkgKXOqnT562wd2F3l1WDwyn7DLWDqb9rCI6SAB8
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8uDkImAeoRFQycL77fXBqO9KKVk5x569Qjltacbw4/taOhWPAq/+6Wf5bZsUEp5g
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wD+hLvgYn/0pdGkjiAJ+jlRBxarF9lJac4QPztqw3qJPtVdIKbmo58hoxERIthD2
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f/ZkGjaZXzOIvD8Ai0NQ+H4k5DK5dLlFI78XbrsH161t4Jcspq+v5VUdUyUMAvti
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4peK0RgHw47h90kkee+qIf5F+WWSw28tjkbILWx2ld/bN59eZj4itb3UUw/OZRpC
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Y0pOBOvl1wp5PS+pUJAMsg6PR50yPNYREwIBAg==
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-----END DH PARAMETERS-----
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@ -1,8 +0,0 @@
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-----BEGIN DH PARAMETERS-----
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MIIBCAKCAQEAlYgX/PXMu60WVkgKXOqnT562wd2F3l1WDwyn7DLWDqb9rCI6SAB8
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8uDkImAeoRFQycL77fXBqO9KKVk5x569Qjltacbw4/taOhWPAq/+6Wf5bZsUEp5g
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wD+hLvgYn/0pdGkjiAJ+jlRBxarF9lJac4QPztqw3qJPtVdIKbmo58hoxERIthD2
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f/ZkGjaZXzOIvD8Ai0NQ+H4k5DK5dLlFI78XbrsH161t4Jcspq+v5VUdUyUMAvti
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4peK0RgHw47h90kkee+qIf5F+WWSw28tjkbILWx2ld/bN59eZj4itb3UUw/OZRpC
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Y0pOBOvl1wp5PS+pUJAMsg6PR50yPNYREwIBAg==
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-----END DH PARAMETERS-----
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49
test/mail_manual_dhparams.bats
Normal file
49
test/mail_manual_dhparams.bats
Normal file
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@ -0,0 +1,49 @@
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load 'test_helper/common'
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function setup() {
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run_setup_file_if_necessary
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}
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function teardown() {
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run_teardown_file_if_necessary
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}
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function setup_file() {
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docker run -d --name mail_manual_dhparams \
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-v "`pwd`/test/config":/tmp/docker-mailserver \
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-v "`pwd`/test/test-files":/tmp/docker-mailserver-test:ro \
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-v "`pwd`/test/test-files/ssl/ffdhe2048.pem":/var/mail-state/lib-shared/dhparams.pem:ro \
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-e DMS_DEBUG=0 \
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-e ONE_DIR=1 \
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-h mail.my-domain.com -t ${NAME}
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wait_for_finished_setup_in_container mail_manual_dhparams
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}
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function teardown_file() {
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skip
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docker rm -f mail_manual_dhparams
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}
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@test "first" {
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skip 'this test must come first to reliably identify when to run setup_file'
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}
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@test "checking dhparams: check manual dhparams is used" {
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test_checksum=$(sha512sum "$(pwd)/test/test-files/ssl/ffdhe2048.pem" | awk '{print $1}')
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run echo "$test_checksum"
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refute_output '' # checksum must not be empty
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docker_dovecot_checksum=$(docker exec mail_manual_dhparams sha512sum /etc/dovecot/dh.pem | awk '{print $1}')
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docker_postfix_checksum=$(docker exec mail_manual_dhparams sha512sum /etc/postfix/dhparams.pem | awk '{print $1}')
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assert_equal "$docker_dovecot_checksum" "$test_checksum"
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assert_equal "$docker_postfix_checksum" "$test_checksum"
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}
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@test "checking dhparams: check warning output when using manual dhparams" {
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run sh -c "docker logs mail_manual_dhparams | grep 'Using self-generated dhparams is considered as insecure'"
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assert_success
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}
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@test "last" {
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skip 'this test is only there to reliably mark the end for the teardown_file'
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}
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8
test/test-files/ssl/ffdhe2048.pem
Normal file
8
test/test-files/ssl/ffdhe2048.pem
Normal file
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@ -0,0 +1,8 @@
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-----BEGIN DH PARAMETERS-----
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MIIBCAKCAQEA//////////+t+FRYortKmq/cViAnPTzx2LnFg84tNpWp4TZBFGQz
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+8yTnc4kmz75fS/jY2MMddj2gbICrsRhetPfHtXV/WVhJDP1H18GbtCFY2VVPe0a
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87VXE15/V8k1mE8McODmi3fipona8+/och3xWKE2rec1MKzKT0g6eXq8CrGCsyT7
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YdEIqUuyyOP7uWrat2DX9GgdT0Kj3jlN9K5W7edjcrsZCwenyO4KbXCeAvzhzffi
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7MA0BM0oNC9hkXL+nOmFg/+OTxIy7vKBg8P+OxtMb61zO7X8vC7CIAXFjvGDfRaD
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ssbzSibBsu/6iGtCOGEoXJf//////////wIBAg==
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-----END DH PARAMETERS-----
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@ -669,12 +669,19 @@ EOF
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@test "checking ssl: checking dhe params are sufficient" {
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# reference used: (22/04/2020) https://english.ncsc.nl/publications/publications/2019/juni/01/it-security-guidelines-for-transport-layer-security-tls
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skip 'todo : check checksum same as mozilla'
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# todo :
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# - test case mail uses ffdhe by default
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# - test case mail uses custom dhe ==> SET WARNING IN LOGS
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# todo : remove dhe generation
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# check ffdhe params are inchanged
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repo_checksum=$(sha512sum "$(pwd)/target/shared/ffdhe4096.pem" | awk '{print $1}')
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mozilla_checksum=$(curl https://ssl-config.mozilla.org/ffdhe4096.txt -s | sha512sum | awk '{print $1}')
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assert_equal "$repo_checksum" "$mozilla_checksum"
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run echo "$repo_checksum"
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refute_output '' # checksum must not be empty
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# by default, ffdhe4096 should be used
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docker_dovecot_checksum=$(docker exec mail sha512sum /etc/dovecot/dh.pem | awk '{print $1}')
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docker_postfix_checksum=$(docker exec mail sha512sum /etc/postfix/dhparams.pem | awk '{print $1}')
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assert_equal "$docker_dovecot_checksum" "$repo_checksum"
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assert_equal "$docker_postfix_checksum" "$repo_checksum"
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}
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#
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