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testssl.sh
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Start for improving handling of intermediate certs 

See #1683, #1653,  #1004, #1264

* separate code for bad ocsp a bit
* output intermediate cert in json/csv
* replace sed statements from cert_fingerprint* and -serial by bash funcs
This commit is contained in:
Dirk 2020-09-28 20:17:11 +02:00
parent 3d07f55f56
commit 9094665768
1 changed files with 33 additions and 18 deletions
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49
testssl.sh
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@ -8317,6 +8317,13 @@ certificate_transparency() {
return 0
}
determine_certs_fingerprints_serial() {
local cert="$1"
local ossl_command="$2"
}
certificate_info() {
local proto
local -i certificate_number=$1
@ -8341,7 +8348,7 @@ certificate_info() {
local startdate enddate issuer_CN issuer_C issuer_O issuer sans san all_san="" cn
local issuer_DC issuerfinding cn_nosni=""
local cert_fingerprint_sha1 cert_fingerprint_sha2 cert_serial cert
local -a intermediate_certs=()
local -a intermediate_certs_txt=()
local policy_oid
local spaces=""
local -i trust_sni=0 trust_nosni=0 diffseconds=0
@ -8700,14 +8707,19 @@ certificate_info() {
fi
out "$indent"; pr_bold " Serial / Fingerprints "
cert_serial="$($OPENSSL x509 -noout -in $HOSTCERT -serial 2>>$ERRFILE | sed 's/serial=//')"
cert_serial="$($OPENSSL x509 -noout -in $HOSTCERT -serial 2>>$ERRFILE)"
cert_serial="${cert_serial//serial=}"
fileout "cert_serialNumber${json_postfix}" "INFO" "$cert_serial"
cert_fingerprint_sha1="$($OPENSSL x509 -noout -in $HOSTCERT -fingerprint -sha1 2>>$ERRFILE | sed 's/Fingerprint=//' | sed 's/://g')"
fileout "cert_fingerprintSHA1${json_postfix}" "INFO" "${cert_fingerprint_sha1//SHA1 /}"
cert_fingerprint_sha1="$($OPENSSL x509 -noout -in $HOSTCERT -fingerprint -sha1 2>>$ERRFILE)"
cert_fingerprint_sha1="${cert_fingerprint_sha1//Fingerprint=}"
cert_fingerprint_sha1="${cert_fingerprint_sha1//:/}"
outln "$cert_serial / $cert_fingerprint_sha1"
fileout "cert_fingerprintSHA1${json_postfix}" "INFO" "${cert_fingerprint_sha1//SHA1 /}"
cert_fingerprint_sha2="$($OPENSSL x509 -noout -in $HOSTCERT -fingerprint -sha256 2>>$ERRFILE | sed 's/Fingerprint=//' | sed 's/://g' )"
cert_fingerprint_sha2="$($OPENSSL x509 -noout -in $HOSTCERT -fingerprint -sha256 2>>$ERRFILE)"
cert_fingerprint_sha2="${cert_fingerprint_sha2//Fingerprint=}"
cert_fingerprint_sha2="${cert_fingerprint_sha2//:/}"
fileout "cert_fingerprintSHA256${json_postfix}" "INFO" "${cert_fingerprint_sha2//SHA256 /}"
outln "$spaces$cert_fingerprint_sha2"
@ -8988,20 +9000,13 @@ certificate_info() {
# https://certs.opera.com/03/ev-oids.xml
# see #967
# courtesy Hanno Boeck (see https://github.com/hannob/badocspcert)
out "$indent"; pr_bold " Bad OCSP intermediate"
out " (exp.) "
jsonID="cert_bad_ocsp"
# There might be >1 certificate, so we split intermediatecerts.pem e.g. into
# intermediatecert1.crt, intermediatecert2.cert.
#FIXME: This is redundant code. We do that elsewhere, e.g. before in extract_certificates()
# and run_hpkp() at least but didn't keep the result
#
#FIXME: We just raise the flag saying the chain is bad w/o naming the intermediate
# cert to blame.
#FIXME: This is somewhat redundant code. We do similar stuff elsewhere, e.g. in extract_certificates()
# and run_hpkp() but don't keep the result
# Store all of the intermediate certificates in an array so that they can
# Store all of the text output of the intermediate certificates in an array so that they can
# be used later (e.g., to check their expiration dates).
while true; do
[[ "$intermediates" =~ \-\-\-\-\-\BEGIN\ CERTIFICATE\-\-\-\-\- ]] || break
@ -9009,14 +9014,24 @@ certificate_info() {
cert="${intermediates%%-----END CERTIFICATE-----*}"
intermediates="${intermediates#${cert}-----END CERTIFICATE-----}"
cert="-----BEGIN CERTIFICATE-----${cert}-----END CERTIFICATE-----"
intermediate_certs[certificates_provided]="$($OPENSSL x509 -text -noout 2>/dev/null <<< "$cert")"
# we count as humans in the file output here. This needs later to be adjusted in the code
fileout "intermediate_cert $((certificates_provided + 1 ))" "INFO" "$cert"
intermediate_certs_txt[certificates_provided]="$($OPENSSL x509 -text -noout 2>/dev/null <<< "$cert")"
certificates_provided+=1
done
# courtesy Hanno Boeck (see https://github.com/hannob/badocspcert)
out "$indent"; pr_bold " Bad OCSP intermediate"
out " (exp.) "
jsonID="cert_bad_ocsp"
certificates_provided+=1
for (( i=0; i < certificates_provided-1; i++ )); do
cert_ext_keyusage="$(awk '/X509v3 Extended Key Usage:/ { getline; print $0 }' <<< "${intermediate_certs[i]}")"
cert_ext_keyusage="$(awk '/X509v3 Extended Key Usage:/ { getline; print $0 }' <<< "${intermediate_certs_txt[i]}")"
[[ "$cert_ext_keyusage" =~ OCSP\ Signing ]] && badocsp=0 && break
done
#FIXME: We only raise the flag saying the chain is bad w/o naming the intermediate cert to blame.
if [[ $badocsp -eq 0 ]]; then
prln_svrty_medium "NOT ok"
fileout "${jsonID}${json_postfix}" "MEDIUM" "NOT ok is/are intermediate certificate(s)"