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The Ubuntu operating system must enforce password complexity by requiring that at least one upper-case character be used.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-238221UBTU-20-010050SV-238221r1015144_ruleCCI-000192low
Description
Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password complexity is one factor of several that determines how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.
STIGDate
Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide2025-05-16

Related Frameworks

2 mappings across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (3) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-10Authenticator Management
0.50
IAC-10.1Password-Based Authentication
0.50
IAC-10.4Automated Support For Password Strength
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (62) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-10Concurrent Session Control
1.00
AC-12Session Termination
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(10)Shared and Group Account Credential Change
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-3Access Enforcement
1.00

+52 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (4) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.5.10
1.00
3.5.7
1.00
3.5.8
1.00
3.5.9
1.00
CCI2 mappings
CCI-000192
1.00
CCI-004066
1.00

Details

Check Text (C-238221r1015144_chk)

Verify the Ubuntu operating system enforces password complexity by requiring that at least one upper-case character be used. Determine if the field "ucredit" is set in the "/etc/security/pwquality.conf" file with the following command: $ grep -i "ucredit" /etc/security/pwquality.conf ucredit=-1 If the "ucredit" parameter is greater than "-1" or is commented out, this is a finding.

Fix Text (F-41390r653837_fix)

Add or update the "/etc/security/pwquality.conf" file to contain the "ucredit" parameter: ucredit=-1