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Refresh assumed role credentials to avoid role chaining limitations @michael-dickinson-sainsburys

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Refresh assumed role credentials to avoid role chaining limitations @michael-dickinson-sainsburys
This commit is contained in:
Toni de la Fuente
2020-12-15 17:29:11 +01:00
committed by Michael Dickinson
parent e047dc8764 30eb447919
commit 5e38c61286
4 changed files with 36 additions and 3 deletions
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4
README.md
View File

@@ -297,9 +297,9 @@ or with a given External ID:
If you want to run Prowler or just a check or a group across all accounts of AWS Organizations you can do this:
First get a list of accounts:
First get a list of accounts that are not suspended:
```
ACCOUNTS_IN_ORGS=$(aws organizations list-accounts --query Accounts[*].Id --output text)
ACCOUNTS_IN_ORGS=$(aws organizations list-accounts --query Accounts[?Status==`ACTIVE`].Id --output text)
```
Then run Prowler to assume a role (same in all members) per each account, in this example it is just running one particular check:
```

1
include/assume_role
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@@ -64,6 +64,7 @@ assume_role(){
export AWS_ACCESS_KEY_ID=$(cat $TEMP_STS_ASSUMED_FILE | jq -r '.Credentials.AccessKeyId')
export AWS_SECRET_ACCESS_KEY=$(cat $TEMP_STS_ASSUMED_FILE | jq -r '.Credentials.SecretAccessKey')
export AWS_SESSION_TOKEN=$(cat $TEMP_STS_ASSUMED_FILE | jq -r '.Credentials.SessionToken')
export AWS_SESSION_EXPIRATION=$(convert_date_to_timestamp "$(cat $TEMP_STS_ASSUMED_FILE | jq -r '.Credentials.Expiration')")
rm -fr $TEMP_STS_ASSUMED_FILE
}

20
include/os_detector
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@@ -108,6 +108,14 @@ bsd_get_iso8601_timestamp() {
"$DATE_CMD" -u +"%Y-%m-%dT%H:%M:%SZ"
}
gnu_convert_date_to_timestamp() {
date -d "$1" +%s
}
bsd_convert_date_to_timestamp() {
date -j -f "%Y-%m-%dT%H:%M:%SZ" "$1" "+%s"
}
gnu_test_tcp_connectivity() {
HOST=$1
PORT=$2
@@ -154,6 +162,9 @@ if [ "$OSTYPE" == "linux-gnu" ] || [ "$OSTYPE" == "linux-musl" ]; then
test_tcp_connectivity() {
gnu_test_tcp_connectivity "$1" "$2" "$3"
}
convert_date_to_timestamp() {
gnu_convert_date_to_timestamp "$1"
}
elif [[ "$OSTYPE" == "darwin"* ]]; then
# BSD/OSX commands compatibility
TEMP_REPORT_FILE=$(mktemp -t prowler.cred_report-XXXXXX)
@@ -189,6 +200,9 @@ elif [[ "$OSTYPE" == "darwin"* ]]; then
get_iso8601_timestamp() {
gnu_get_iso8601_timestamp
}
convert_date_to_timestamp() {
gnu_convert_date_to_timestamp "$1"
}
else
how_older_from_today() {
bsd_how_older_from_today "$1"
@@ -208,6 +222,9 @@ elif [[ "$OSTYPE" == "darwin"* ]]; then
get_iso8601_timestamp() {
bsd_get_iso8601_timestamp
}
convert_date_to_timestamp() {
bsd_convert_date_to_timestamp "$1"
}
fi
if "$BASE64_CMD" --version >/dev/null 2>&1 ; then
decode_report() {
@@ -248,6 +265,9 @@ elif [[ "$OSTYPE" == "cygwin" ]]; then
test_tcp_connectivity() {
gnu_test_tcp_connectivity "$1" "$2" "$3"
}
convert_date_to_timestamp() {
gnu_convert_date_to_timestamp "$1"
}
else
echo "Unknown Operating System! Valid \$OSTYPE: linux-gnu, linux-musl, darwin* or cygwin"
echo "Found: $OSTYPE"

12
prowler
View File

@@ -320,6 +320,18 @@ show_group_title() {
# Function to execute the check
execute_check() {
if [[ $ACCOUNT_TO_ASSUME ]]; then
MINIMUM_REMAINING_TIME_ALLOWED=$(( SESSION_DURATION_TO_ASSUME / 10 ))
CURRENT_TIMESTAMP=$(date -u "+%s")
SESSION_CUTOFF=$(( CURRENT_TIMESTAMP + MINIMUM_REMAINING_TIME_ALLOWED ))
if (( AWS_SESSION_EXPIRATION < SESSION_CUTOFF )); then
unset AWS_ACCESS_KEY_ID
unset AWS_SECRET_ACCESS_KEY
unset AWS_SESSION_TOKEN
assume_role
fi
fi
# See if this is an alternate name for a check
# for example, we might have been passed 1.01 which is another name for 1.1
local alternate_name_var=CHECK_ALTERNATE_$1