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Toni de la Fuente committed 2021-12-03 16:09:36 +01:00
commit 022a4487f3
2 files changed
+85 -9

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@@ -0,0 +1,57 @@
#!/usr/bin/env bash
# Prowler - the handy cloud security tool (copyright 2019) by Toni de la Fuente
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy
# of the License at http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software distributed
# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
# CONDITIONS OF ANY KIND, either express or implied. See the License for the
# specific language governing permissions and limitations under the License.
# Remediation:
#
# https://docs.aws.amazon.com/cli/latest/reference/logs/associate-kms-key.html
# associate-kms-key
# --log-group-name <value>
# --kms-key-id <value>
# [--cli-input-json <value>]
# [--generate-cli-skeleton <value>]
CHECK_ID_extra7164="7.164"
CHECK_TITLE_extra7164="[extra7164] Check if CloudWatch log groups are protected by AWS KMS "
CHECK_SCORED_extra7164="NOT_SCORED"
CHECK_TYPE_extra7164="EXTRA"
CHECK_SEVERITY_extra7164="Medium"
CHECK_ASFF_RESOURCE_TYPE_extra7164="Logs"
CHECK_ALTERNATE_extra7164="extra7164"
CHECK_SERVICENAME_extra7164="logs"
CHECK_RISK_extra7164="Using customer managed KMS to encrypt CloudWatch log group provide additional confidentiality and control over the log data"
CHECK_REMEDITATION_extra7164="Associate KMS Key with Cloudwatch log group."
CHECK_DOC_extra7164="https://docs.aws.amazon.com/cli/latest/reference/logs/associate-kms-key.html"
CHECK_CAF_EPIC_extra7164="Data Protection"
extra7164(){
# "Check if Cloudwatch log groups are associated with AWS KMS"
for regx in $REGIONS; do
LIST_OF_LOGGROUPS=$($AWSCLI logs describe-log-groups $PROFILE_OPT --region $regx --output json | jq '.logGroups[]')
if [[ $LIST_OF_LOGGROUPS ]]; then
LIST_OF_LOGGROUPS_WITHOUT_KMS=$(echo "${LIST_OF_LOGGROUPS}" | jq '. | select( has("kmsKeyId") == false )' | jq -r '.logGroupName')
LIST_OF_LOGGROUPS_WITH_KMS=$(echo "${LIST_OF_LOGGROUPS}" | jq '. | select( has("kmsKeyId") == true )' | jq -r '.logGroupName')
if [[ $LIST_OF_LOGGROUPS_WITHOUT_KMS ]]; then
for loggroup in $LIST_OF_LOGGROUPS_WITHOUT_KMS; do
textFail "$regx: ${loggroup} does not have AWS KMS keys associated." "$regx" "${loggroup}"
done
fi
if [[ $LIST_OF_LOGGROUPS_WITH_KMS ]]; then
for loggroup in $LIST_OF_LOGGROUPS_WITH_KMS; do
textPass "$regx: ${loggroup} does have AWS KMS keys associated." "$regx" "${loggroup}"
done
fi
else
textPass "$regx: No Cloudwatch log groups found." "$regx"
fi
done
}
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@@ -42,29 +42,48 @@ checkSecurityHubCompatibility(){
resolveSecurityHubPreviousFails(){
# Move previous check findings RecordState to ARCHIVED (as prowler didn't re-detect them)
SH_TEMP_FOLDER="$PROWLER_DIR/SH-$ACCOUNT_NUM"
if [[ ! -d $SH_TEMP_FOLDER ]]; then
# this folder is deleted once the security hub update is completed
mkdir "$SH_TEMP_FOLDER"
fi
for regx in $REGIONS; do
REGION_FOLDER="$SH_TEMP_FOLDER/$regx"
if [[ ! -d $REGION_FOLDER ]]; then
mkdir "$REGION_FOLDER"
fi
local check="$1"
NEW_TIMESTAMP=$(get_iso8601_timestamp)
FILTER="{\"GeneratorId\":[{\"Value\": \"prowler-$check\",\"Comparison\":\"EQUALS\"}],\"RecordState\":[{\"Value\": \"ACTIVE\",\"Comparison\":\"EQUALS\"}],\"AwsAccountId\":[{\"Value\": \"$ACCOUNT_NUM\",\"Comparison\":\"EQUALS\"}]}"
NEW_FINDING_IDS=$(echo -n "${SECURITYHUB_NEW_FINDINGS_IDS[@]}" | jq -cRs 'split(" ")')
SECURITY_HUB_PREVIOUS_FINDINGS=$($AWSCLI securityhub --region "$regx" $PROFILE_OPT get-findings --filters "${FILTER}" | jq -c --argjson ids "$NEW_FINDING_IDS" --arg updated_at $NEW_TIMESTAMP '[ .Findings[] | select( .Id| first(select($ids[] == .)) // false | not) | .RecordState = "ARCHIVED" | .UpdatedAt = $updated_at ]')
NEW_FINDING_FILE="$REGION_FOLDER/findings.json"
NEW_FINDING_IDS=$(echo -n "${SECURITYHUB_NEW_FINDINGS_IDS[@]}" | jq -cRs 'split(" ")' > $NEW_FINDING_FILE)
EXISTING_FILE="$REGION_FOLDER/existing.json"
EXISTING_FINDINGS=$($AWSCLI securityhub --region "$regx" $PROFILE_OPT get-findings --filters "${FILTER}" > $EXISTING_FILE)
SECURITY_HUB_PREVIOUS_FINDINGS=$(for id in $(comm -23 <(jq '[.Findings[].Id] | sort | .[]' $EXISTING_FILE) <(jq '[.[]] | sort | .[]' $NEW_FINDING_FILE));
do
jq --arg updated_at $NEW_TIMESTAMP '.Findings[] | select(.Id == '"$id"') | .RecordState = "ARCHIVED" | .UpdatedAt = $updated_at ' < $EXISTING_FILE
done | jq -s '.')
if [[ $SECURITY_HUB_PREVIOUS_FINDINGS != "[]" ]]; then
FINDINGS_COUNT=$(echo $SECURITY_HUB_PREVIOUS_FINDINGS | jq '. | length')
for i in `seq 0 100 $FINDINGS_COUNT`;
for i in $(seq 0 50 $FINDINGS_COUNT);
do
BATCH_FINDINGS=$(echo $SECURITY_HUB_PREVIOUS_FINDINGS | jq -c '.['"$i:$i+100"']')
BATCH_IMPORT_RESULT=$($AWSCLI securityhub --region "$regx" $PROFILE_OPT batch-import-findings --findings "${BATCH_FINDINGS}")
if [[ -z "${BATCH_IMPORT_RESULT}" ]] || jq -e '.FailedCount >= 1' <<< "${BATCH_IMPORT_RESULT}" > /dev/null 2>&1; then
echo -e "\n$RED ERROR!$NORMAL Failed to send check output to AWS Security Hub\n"
BATCH_FINDINGS=$(echo $SECURITY_HUB_PREVIOUS_FINDINGS | jq -c '.['"$i:$i+50"']')
BATCH_FINDINGS_COUNT=$(echo $BATCH_FINDINGS | jq '. | length')
if [ "$BATCH_FINDINGS_COUNT" -gt 0 ]; then
BATCH_IMPORT_RESULT=$($AWSCLI securityhub --region "$regx" $PROFILE_OPT batch-import-findings --findings "${BATCH_FINDINGS}")
if [[ -z "${BATCH_IMPORT_RESULT}" ]] || jq -e '.FailedCount >= 1' <<< "${BATCH_IMPORT_RESULT}" > /dev/null 2>&1; then
echo -e "\n$RED ERROR!$NORMAL Failed to send check output to AWS Security Hub\n"
fi
fi
done
fi
done
rm -rf "$SH_TEMP_FOLDER"
}
sendToSecurityHub(){