Title

Symantec ProxySG providing reverse proxy encryption intermediary services must use NIST FIPS-validated cryptography to implement encryption services. (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. See the Blue Coat Reverse Proxy WebGuide for more information. If Symantec ProxySG providing reverse proxy encryption intermediary services does not use NIST FIPS-validated cryptography to implement encryption services, 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. See the Blue Coat Reverse Proxy WebGuide for more information.

Additional Identifiers

Rule ID: SV-104263r1_rule

Vulnerability ID: V-94309

Group Title: SRG-NET-000510-ALG-000111

Expert Comments

CCIs tied to check.

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