feat(iam): add Bedrock AgentCore privilege escalation combo (#8526)

This commit is contained in:
Andoni Alonso
2025-08-15 13:25:15 +02:00
committed by GitHub
parent dfdd45e4d0
commit 39e4d20b24
4 changed files with 144 additions and 0 deletions
+1
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@@ -8,6 +8,7 @@ All notable changes to the **Prowler SDK** are documented in this file.
- Certificate authentication for M365 provider [(#8404)](https://github.com/prowler-cloud/prowler/pull/8404)
- `vm_sufficient_daily_backup_retention_period` check for Azure provider [(#8200)](https://github.com/prowler-cloud/prowler/pull/8200)
- `vm_jit_access_enabled` check for Azure provider [(#8202)](https://github.com/prowler-cloud/prowler/pull/8202)
- Bedrock AgentCore privilege escalation combination for AWS provider [(#8526)](https://github.com/prowler-cloud/prowler/pull/8526)
### Changed
- Refine kisa isms-p compliance mapping [(#8479)](https://github.com/prowler-cloud/prowler/pull/8479)
@@ -86,6 +86,12 @@ privilege_escalation_policies_combination = {
"sts:AssumeRole",
"iam:UpdateAssumeRolePolicy",
},
# AgentCore privilege escalation patterns
"PassRole+AgentCoreCreateInterpreter+InvokeInterpreter": {
"iam:PassRole",
"bedrock-agentcore:CreateCodeInterpreter",
"bedrock-agentcore:InvokeCodeInterpreter",
},
# TO-DO: We have to handle AssumeRole just if the resource is * and without conditions
# "sts:AssumeRole": {"sts:AssumeRole"},
}
@@ -1219,3 +1219,75 @@ class Test_iam_inline_policy_allows_privilege_escalation:
f"Inline Policy '{policy_name}' attached to role {role_arn} allows privilege escalation using the following actions:",
finding.status_extended,
)
@mock_aws
def test_iam_inline_role_policy_allows_privilege_escalation_agentcore(self):
"""Test detection of AWS Bedrock AgentCore privilege escalation in inline role policy."""
iam_client = client("iam", region_name=AWS_REGION_US_EAST_1)
# Create IAM Role
role_name = "agentcore_test_role"
role_arn = iam_client.create_role(
RoleName=role_name,
AssumeRolePolicyDocument=dumps(ADMINISTRATOR_ROLE_ASSUME_ROLE_POLICY),
)["Role"]["Arn"]
# Put Role Policy with AgentCore privilege escalation permissions
policy_name = "agentcore_policy"
policy_document = {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"iam:PassRole",
"bedrock-agentcore:CreateCodeInterpreter",
"bedrock-agentcore:InvokeCodeInterpreter",
],
"Resource": "*",
}
],
}
_ = iam_client.put_role_policy(
RoleName=role_name,
PolicyName=policy_name,
PolicyDocument=dumps(policy_document),
)
aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])
from prowler.providers.aws.services.iam.iam_service import IAM
with (
mock.patch(
"prowler.providers.common.provider.Provider.get_global_provider",
return_value=aws_provider,
),
mock.patch(
"prowler.providers.aws.services.iam.iam_inline_policy_allows_privilege_escalation.iam_inline_policy_allows_privilege_escalation.iam_client",
new=IAM(aws_provider),
),
):
# Test Check
from prowler.providers.aws.services.iam.iam_inline_policy_allows_privilege_escalation.iam_inline_policy_allows_privilege_escalation import (
iam_inline_policy_allows_privilege_escalation,
)
check = iam_inline_policy_allows_privilege_escalation()
result = check.execute()
assert len(result) == 1
assert result[0].status == "FAIL"
assert result[0].resource_id == f"{role_name}/{policy_name}"
assert result[0].resource_arn == role_arn
assert result[0].region == AWS_REGION_US_EAST_1
assert result[0].resource_tags == []
assert search(
f"Inline policy {policy_name} attached to role {role_name} allows privilege escalation using the following actions: ",
result[0].status_extended,
)
assert search("iam:PassRole", result[0].status_extended)
assert search(
"bedrock-agentcore:CreateCodeInterpreter", result[0].status_extended
)
assert search(
"bedrock-agentcore:InvokeCodeInterpreter", result[0].status_extended
)
@@ -915,6 +915,71 @@ class Test_iam_policy_allows_privilege_escalation:
]:
assert search(permission, finding.status_extended)
@mock_aws
def test_iam_policy_allows_privilege_escalation_agentcore_passrole_create_invoke(
self,
):
"""Test detection of AWS Bedrock AgentCore privilege escalation pattern."""
aws_provider = set_mocked_aws_provider([AWS_REGION_US_EAST_1])
iam_client = client("iam", region_name=AWS_REGION_US_EAST_1)
policy_name = "agentcore_privilege_escalation_policy"
policy_document = {
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"iam:PassRole",
"bedrock-agentcore:CreateCodeInterpreter",
"bedrock-agentcore:InvokeCodeInterpreter",
],
"Resource": "*",
}
],
}
policy_arn = iam_client.create_policy(
PolicyName=policy_name, PolicyDocument=dumps(policy_document)
)["Policy"]["Arn"]
from prowler.providers.aws.services.iam.iam_service import IAM
with (
mock.patch(
"prowler.providers.common.provider.Provider.get_global_provider",
return_value=aws_provider,
),
mock.patch(
"prowler.providers.aws.services.iam.iam_policy_allows_privilege_escalation.iam_policy_allows_privilege_escalation.iam_client",
new=IAM(aws_provider),
),
):
# Test Check
from prowler.providers.aws.services.iam.iam_policy_allows_privilege_escalation.iam_policy_allows_privilege_escalation import (
iam_policy_allows_privilege_escalation,
)
check = iam_policy_allows_privilege_escalation()
result = check.execute()
assert len(result) == 1
assert result[0].status == "FAIL"
assert result[0].resource_id == policy_name
assert result[0].resource_arn == policy_arn
assert result[0].region == AWS_REGION_US_EAST_1
assert result[0].resource_tags == []
assert search(
f"Custom Policy {policy_arn} allows privilege escalation using the following actions: ",
result[0].status_extended,
)
assert search("iam:PassRole", result[0].status_extended)
assert search(
"bedrock-agentcore:CreateCodeInterpreter", result[0].status_extended
)
assert search(
"bedrock-agentcore:InvokeCodeInterpreter", result[0].status_extended
)
@mock_aws
def test_iam_policy_allows_privilege_escalation_iam_put(
self,