Details
The DoD standard for authentication is DoD-approved PKI certificates. PKI certificate-based authentication is performed by requiring the certificate holder to cryptographically prove possession of the corresponding private key.
If the private key is stolen, an attacker can use the private key(s) to impersonate the certificate holder. In cases where SQL Server-stored private keys are used to authenticate SQL Server to the system’s clients, loss of the corresponding private keys would allow an attacker to successfully perform undetected man in the middle attacks against SQL Server system and its clients.
Both the holder of a digital certificate and the issuing authority must take careful measures to protect the corresponding private key. Private keys should always be generated and protected in FIPS 140-2 validated cryptographic modules.
All access to the private key(s) of SQL Server must be restricted to authorized and authenticated users. If unauthorized users have access to one or more of SQL Server’s private keys, an attacker could gain access to the key(s) and use them to impersonate the database on the network or otherwise perform unauthorized actions.
Solution
Enable use of FIPS 140-2 compliant algorithms.
Start >> Control Panel >> Administrative Tools >> Local Security Policy >> Local Policies >> Security Options
Double-click ‘System cryptography: Use FIPS-compliant algorithms for encryption, hashing, and signing.’
Click Enabled >> Apply.
Supportive Information
The following resource is also helpful.
This security hardening control applies to the following category of controls within NIST 800-53: Identification and Authentication.This control applies to the following type of system Windows.
References
- 800-53|IA-5(2)(b)
- CAT|I
- CCI|CCI-000186
- Rule-ID|SV-213968r754613_rule
- STIG-ID|SQL6-D0-008400
- STIG-Legacy|SV-93903
- STIG-Legacy|V-79197
- Vuln-ID|V-213968