F5BI-DM-000119 - If multifactor authentication is not supported and passwords must be used, the BIG-IP appliance must require that when a password is changed, the characters are changed in at least eight (8) of the positions within the password.

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Information

If the application 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.

NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.

Solution

Configure the BIG-IP appliance to use a properly configured authentication server to require when a password is changed, the characters are changed in at least eight (8) of the positions within the password.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_F5_BIG-IP_11-x_Y20M10_STIG.zip

Item Details

References: CAT|II, CCI|CCI-000195, Rule-ID|SV-217403r557520_rule, STIG-ID|F5BI-DM-000119, STIG-Legacy|SV-74585, STIG-Legacy|V-60155, Vuln-ID|V-217403

Plugin: F5

Control ID: 69bc800c14ec82ec26b5d079ac126e5c86c61d36b043f3f70449c5c9e74132c3