The VMM must require the change of at least eight of the total number of characters when passwords are changed.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-207375	SRG-OS-000072	SRG-OS-000072-VMM-000390	SV-207375r984198_rule	2024-12-06	2

Description
If the VMM allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increasing the window of opportunity for attempts at guessing and brute-force attacks. The number of changed characters refers to the number of changes required with respect to the total number of positions in the current password. In other words, characters may be the same within the two passwords; however, the positions of the like characters must be different.

Description

If the VMM allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increasing the window of opportunity for attempts at guessing and brute-force attacks. The number of changed characters refers to the number of changes required with respect to the total number of positions in the current password. In other words, characters may be the same within the two passwords; however, the positions of the like characters must be different.

ℹ️ Check
Verify the VMM requires the change of at least eight of the total number of characters when passwords are changed. If it does not, this is a finding.

✔️ Fix
Configure the VMM to require the change of at least eight of the total number of characters when passwords are changed.