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macOS post-exploitation for credential harvesting, DTrace monitoring, TCC bypass, and stealth operations via native tools
Windows userland post-exploitation for credential harvesting, monitoring, AMSI/ETW bypass, and stealth operations
Kubernetes post-exploitation for container escape, secret extraction, RBAC abuse, and cluster persistence
Based on SOC occupation classification
| name | cis-bind-v100-7-2 |
| description | Enable DNSSEC Validation (Automated) |
| category | cis-bind |
| version | 1.0 |
| author | cyberstrike-official |
| tags | ["cis","bind","dns","isc-bind","bind9","secure-network","dnssec"] |
| cis_id | 7.2 |
| cis_benchmark | CIS ISC BIND DNS Server 9.11 Benchmark v1.0.0 |
| tech_stack | ["bind","isc-bind","dns","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
DNS Security Extensions or DNSSEC for short provides authentication of the name servers through public key cryptography. With DNSSEC, the name server signs its responses with its private key. This allows other name servers that have the public key of the name server to verify the integrity and authenticity of the response. DNSSEC also provides for signing of public keys so that delegated sub-domains may have their keys signed by a higher-level authority. This creates a chain of trust so that any name server that trusts the public key of the higher-level signing authority can trust the signed key. It is recommended that DNSSEC be enabled and be configured to validate domains that are signed. DNSSEC and validation are enabled via the options dnssec-enable and dnssec-validation, respectively.
DNSSEC reliably authenticates DNS responses to prevent the DNS spoofing and cache poisoning attacks.
Not specified in the PDF.
Perform the following to verify compliance.
delv command on the name server. The command queries the name isc.org, which has a valid trusted DNSSEC signature.$ delv @127.0.0.1 isc.org
; fully validated
isc.org. 60 IN A 149.20.1.66
isc.org. 60 IN RRSIG A 13 2 60 20200306020506
20200205011018 27566 isc.org.
VxlTxZDll9boCOG2jE+gt7w3memCLyyCd+thrwf5XRrKkrCjcJWL7cd0y82Pv5FHKqhgq4b
BKJOR4uNhUhWDg==
The compliant result should have ; fully validated as the initial response indicating the recursive server is DNSSEC aware.
www.dnssec-failed.org name.$ delv @127.0.0.1 www.dnssec-failed.org
;; resolution failed: SERVFAIL
The status value should be resolution failed: SERVFAIL.
Perform the following for remediation:
dnssec-enable to yes, and option dnssec-validation to either yes or auto as shown below. The auto setting is generally preferred as the trust anchor will not need to be manually configured.dnssec-enable yes
dnssec-validation auto
DNSSEC and DNSSEC validation are enabled by default.
| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v6 | 9 Limitation and Control of Network Ports, Protocols, and Services | Y | Y | Y |
| v7 | 16.4 Encrypt or Hash all Authentication Credentials | N | Y | Y |
| Tactic | Technique |
|---|---|
| Credential Access | T1557 - Adversary-in-the-Middle |
| Command and Control | T1071.004 - Application Layer Protocol: DNS |
| Defense Evasion | T1556 - Modify Authentication Process |