Check: SRG-OS-000329-GPOS-00128
General Purpose Operating System SRG:
SRG-OS-000329-GPOS-00128
(in versions v2 r7 through v1 r4)
Title
The operating system must automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts in 15 minutes occur. (Cat II impact)
Discussion
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced. Limits are imposed by locking the account.
Check Content
Verify the operating system automatically locks an account until the locked account is released by an administrator when three unsuccessful logon attempts in 15 minutes are made. If it does not, this is a finding.
Fix Text
Configure the operating system to automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts in 15 minutes are made.
Additional Identifiers
Rule ID: SV-203698r851764_rule
Vulnerability ID: V-203698
Group Title: SRG-OS-000329
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-002238 |
The information system automatically locks the account or node for either an organization-defined time period, until the locked account or node is released by an administrator, or delays the next logon prompt according to the organization-defined delay algorithm when the maximum number of unsuccessful logon attempts is exceeded. |
Controls
| Number | Title |
|---|---|
| AC-7 |
Unsuccessful Logon Attempts |