The operating system must prohibit password reuse for a minimum of five generations.

STIG ID: SRG-OS-000077-GPOS-00045  |  SRG: SRG-OS-000077 |  Severity: medium |  CCI: CCI-000200 |  Vulnerability Id: V-203633 | 

Vulnerability Discussion

Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. If the information system or application allows the user to consecutively reuse their password when that password has exceeded its defined lifetime, the end result is a password that is not changed as per policy requirements.

Check

Verify the operating system prohibits password reuse for a minimum of five generations. If it does not, this is a finding.

Fix

Configure the operating system to prohibit password reuse for a minimum of five generations.