Check: SRG-APP-000428-DNS-000061
Domain Name System (DNS) SRG:
SRG-APP-000428-DNS-000061
(in versions v3 r2 through v2 r4)
Title
The DNS server implementation must utilize cryptographic mechanisms to prevent unauthorized modification of DNS zone data. (Cat I impact)
Discussion
Applications handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest. Selection of a cryptographic mechanism is based on the need to protect the integrity of organizational information. The strength of the mechanism is commensurate with the security category and/or classification of the information. Organizations have the flexibility to either encrypt all information on storage devices (i.e., full disk encryption) or encrypt specific data structures (e.g., files, records, or fields). The DNS server must protect the integrity of keys (for TSIG/SIG(0) and DNSSEC) and DNS information.
Check Content
Review the DNS server implementation configuration to determine if the DNS server utilizes cryptographic mechanisms to prevent unauthorized modification of zone data. If the DNS server does not utilize cryptographic mechanisms to prevent unauthorized modification, this is a finding.
Fix Text
Configure the DNS server to utilize cryptographic mechanisms to prevent unauthorized modification of zone data.
Additional Identifiers
Rule ID: SV-205214r954226_rule
Vulnerability ID: V-205214
Group Title: SRG-APP-000428
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-002475 |
The information system implements cryptographic mechanisms to prevent unauthorized modification of organization-defined information at rest on organization-defined information system components. |
Controls
Number | Title |
---|---|
SC-28 (1) |
Cryptographic Protection |