Firefox deprecated ciphers must be disabled.

An XCCDF Rule

Description

A weak cipher is defined as an encryption/decryption algorithm that uses a key of insufficient length. Using an insufficient length for a key in an encryption/decryption algorithm opens up the possibility (or probability) that the encryption scheme could be broken.

ID: SV-251571r879587_rule
Version: FFOX-00-000027
Severity: Medium
References: CCI-000381
Updated: 4 days ago

Remediation Templates

Windows group policy:
1. Open the group policy editor tool with "gpedit.msc".
2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Mozilla\Firefox\Disabled Ciphers
Policy Name: TLS_RSA_WITH_3DES_EDE_CBC_SHA
Policy State: Enabled
macOS "plist" file:
Add the following:
<key>DisabledCiphers</key>
  <dict>
    <key>TLS_RSA_WITH_3DES_EDE_CBC_SHA</key>
    <true/>
  </dict>

Linux "policies.json" file:
Add the following in the policies section:
"DisabledCiphers": {
  "TLS_RSA_WITH_3DES_EDE_CBC_SHA": true
}

Firefox deprecated ciphers must be disabled.

Description

Remediation Templates

A Manual Procedure