52 lines
2.0 KiB
Diff
52 lines
2.0 KiB
Diff
commit 70d1cbafe4ab0176cd9fc01f740e34cd1bae326b
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Author: Sebastian Kemper <sebastian_ml@gmx.net>
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Date: Wed Nov 13 20:29:50 2019 +0100
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[gentls_cert] Update message digest
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Debian Buster updated /etc/ssl/openssl.cnf to default to
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MinProtocol = TLSv1.2
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CipherString = DEFAULT@SECLEVEL=2
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gentls_cert currently uses SHA1 as message digest. According to OpenSSL
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documentation this only offers 80 bit of security. 80 bits is enough for
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security level 1, but not 2.
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The OpenSSL default MD nowadays is SHA256. This commit updates
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gentls_cert to use it.
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Issue was reported on the FS mailing list. The certificates created by
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gentls_cert caused "md too weak" errors and clients were unable to
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connect.
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Signed-off-by: Sebastian Kemper <sebastian_ml@gmx.net>
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diff --git a/scripts/gentls_cert.in b/scripts/gentls_cert.in
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index 43aa8ac605..dd56c9f6dc 100644
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--- a/scripts/gentls_cert.in
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+++ b/scripts/gentls_cert.in
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@@ -89,7 +89,7 @@ setup_ca() {
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openssl req -out "${CONFDIR}/CA/cacert.pem" \
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-new -x509 -keyout "${CONFDIR}/CA/cakey.pem" \
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- -config "${TMPFILE}.cfg" -nodes -days ${DAYS} -sha1 >/dev/null || exit 1
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+ -config "${TMPFILE}.cfg" -nodes -days ${DAYS} -sha256 >/dev/null || exit 1
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cat "${CONFDIR}/CA/cacert.pem" > "${CONFDIR}/cafile.pem"
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cp $TMPFILE.cfg /tmp/ssl.cfg
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rm "${TMPFILE}.cfg"
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@@ -131,11 +131,11 @@ generate_cert() {
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openssl req -new -out "${TMPFILE}.req" \
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-newkey rsa:${KEY_SIZE} -keyout "${TMPFILE}.key" \
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- -config "${TMPFILE}.cfg" -nodes -sha1 >/dev/null || exit 1
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+ -config "${TMPFILE}.cfg" -nodes -sha256 >/dev/null || exit 1
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openssl x509 -req -CAkey "${CONFDIR}/CA/cakey.pem" -CA "${CONFDIR}/CA/cacert.pem" -CAcreateserial \
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-in "${TMPFILE}.req" -out "${TMPFILE}.crt" -extfile "${TMPFILE}.cfg" \
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- -extensions "${EXTENSIONS}" -days ${DAYS} -sha1 >/dev/null || exit 1
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+ -extensions "${EXTENSIONS}" -days ${DAYS} -sha256 >/dev/null || exit 1
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cat "${TMPFILE}.crt" "${TMPFILE}.key" > "${CONFDIR}/${OUTFILE}"
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