Title

The application server must remove all export ciphers to protect the confidentiality and integrity of transmitted information. (Cat I impact)

Discussion

During the initial setup of a Transport Layer Security (TLS) connection to the application server, the client sends a list of supported cipher suites in order of preference. The application server will reply with the cipher suite it will use for communication from the client list. If an attacker can intercept the submission of cipher suites to the application server and place, as the preferred cipher suite, a weak export suite, the encryption used for the session becomes easy for the attacker to break, often within minutes to hours.

Check Content

Review the application server documentation and deployed configuration to determine if export ciphers are removed. If the application server does not have the export ciphers removed, this is a finding.

Fix Text

Configure the application server to have export ciphers removed.

Additional Identifiers

Rule ID: SV-204817r918128_rule

Vulnerability ID: V-204817

Group Title: SRG-APP-000439

Expert Comments

CCIs tied to check.

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