Title

Symantec ProxySG providing reverse proxy encryption intermediary services must implement NIST FIPS-validated cryptography for digital signatures. (Cat II impact)

Discussion

Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The network element must implement cryptographic modules adhering to the higher standards approved by the Federal government since this provides assurance they have been tested and validated. This requirement applies only to ALGs that provide encryption intermediary services (e.g., HTTPS, TLS, or DNSSEC).

Check Content

Verify that TLS reverse proxy intermediary services are configured to comply with NIST FIPS-validated cryptography. 1. Verify with the ProxySG administrator that reverse proxy services are configured. 2. Log on to the Web Management Console. 3. Click Configuration >> Services >> Proxy Services. 4. For each reverse proxy service identified by the administrator, click "Edit Service" and Verify that only NIST FIPS-validated SSL protocols are enabled. 5. Log on to the ProxySG SSH CLI. 6. Type "enable" and enter the enable password. 7. Type "configure" and press "Enter". 8. Type "proxy-services" and press "Enter". 9. For each reverse proxy service identified by the administrator, type "edit <reverse proxy service name". 10. Type "view" and verify that only NIST FIPS-validated cipher suites are listed. For more information, see the Blue Coat Reverse Proxy WebGuide. If Symantec ProxySG providing reverse proxy encryption intermediary services does not implement NIST FIPS-validated cryptography for digital signatures, this is a finding.

Fix Text

Configure TLS reverse proxy intermediary services to comply with NIST FIPS-validated cryptography. 1. Verify with the ProxySG administrator that reverse proxy services are configured. 2. Log on to the Web Management Console. 3. Click Configuration >> Services >> Proxy Services. 4. For each reverse proxy service configured, click "Edit Service" and select only NIST FIPS-validated SSL protocols. Click "Apply". 5. Log on to the ProxySG SSH CLI. 6. Type "enable" and enter the enable password. 7. Type "configure" and press "Enter". 8. Type "proxy-services" and press "Enter". 9. For each reverse proxy service identified by the administrator, type "edit <reverse proxy service name". 10. Type "attribute" followed by a list of the desired NIST FIPS-validated cipher suites.

Additional Identifiers

Rule ID: SV-104261r1_rule

Vulnerability ID: V-94307

Group Title: SRG-NET-000510-ALG-000040

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.