TMA-AZURE-7.4

Ensure that HTTP(S) Access from the Internet is Evaluated and Restricted

CaoCấp 1Xem xét thủ côngazure

Mô tả

Network security groups should be periodically evaluated for port misconfigurations. Where HTTP(S) is not explicitly required and narrowly configured for resources attached to a network security group, Internet-level access to Azure resources should be restricted or eliminated. The potential security problem with using HTTP(S) over the Internet is that attackers can use various brute force techniques to gain access to Azure resources. Once the attackers gain access, they can use the resource as a launch point for compromising other resources within the Azure tenant.

Cách kiểm tra

Phương pháp kiểm tra: Xem xét thủ công

Khuyến nghị này không thể kiểm tra tự động. Lần quét sẽ liệt kê mục này kèm hướng dẫn khi bạn truyền cờ --include-manual.

Audit from Azure Portal 1. Go to Network security groups. 2. Click the name of a network security group. 3. Under Settings, click Inbound security rules. 4. Ensure that no inbound security rule exists that matches the following: o Port: 80, 443, or range including 80 or 443 o Protocol: TCP or Any o Source: 0.0.0.0/0, Internet, or Any o Action: Allow 5. Repeat steps 1-4 for each network security group. To audit from Azure Resource Graph: 1. Go to Resource Graph Explorer. 2. Click New query. 3. Paste the following into the query window: resources | where type =~ "microsoft.network/networksecuritygroups" | project id, name, securityRule = properties.securityRules | mv-expand securityRule | extend access = securityRule.properties.access, direction = securityRule.properties.direction, protocol = securityRule.properties.protocol, destinationPort = case(isempty(securityRule.properties.destinationPortRange), securityRule.properties.destinationPortRanges, securityRule.properties.destinationPortRange), sourceAddress = case(isempty(securityRule.properties.sourceAddressPrefix), securityRule.properties.sourceAddressPrefixes, securityRule.properties.sourceAddressPrefix) | where access =~ "All...

Cách khắc phục

Phương pháp khắc phục: Hướng dẫn hoặc bản vá hạ tầng

Remediate from Azure Portal 1. Go to Network security groups. 2. Click the name of a network security group. 3. Under Settings, click Inbound security rules. 4. Check the box next to any inbound security rule matching: o Port: 80, 443, or range including 80 or 443 o Protocol: TCP or Any o Source: 0.0.0.0/0, Internet, or Any o Action: Allow 5. Click Delete. 6. Click Yes. 7. Repeat steps 1-6 for each network security group requiring remediation. Remediate from Azure CLI For each network security group rule requiring remediation, run the following command to delete the rule: az network nsg rule delete --resource-group <resource-group> --nsg-name <network-security-group> --name <rule>

Thuộc tính

Hệ điều hành: Bất kỳ
Thẻ: access-controlazurecloud
Tham chiếu: CIS Microsoft Azure Foundations Benchmark v6.0.0 - 7.4 Ensure that HTTP(S) Access from the Internet is Evaluated and Restricted