SLES 12 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-OS-000021-GPOS-00005
Group -
The SUSE operating system must lock an account after three consecutive invalid access attempts.
By limiting the number of failed access attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by lockin...Rule Medium Severity -
SRG-OS-000480-GPOS-00226
Group -
The SUSE operating system must enforce a delay of at least four (4) seconds between logon prompts following a failed logon attempt.
Limiting the number of logon attempts over a certain time interval reduces the chances that an unauthorized user may gain access to an account.Rule Medium Severity -
SRG-OS-000069-GPOS-00037
Group -
The SUSE operating system must enforce passwords that contain at least one upper-case character.
Use of a complex password helps 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 a...Rule Medium Severity -
SRG-OS-000070-GPOS-00038
Group -
The SUSE operating system must enforce passwords that contain at least one lower-case character.
Use of a complex password helps 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 a...Rule Medium Severity -
SRG-OS-000071-GPOS-00039
Group -
SRG-OS-000266-GPOS-00101
Group -
The SUSE operating system must enforce passwords that contain at least one special character.
Use of a complex password helps 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 att...Rule Medium Severity -
SRG-OS-000072-GPOS-00040
Group -
The SUSE operating system must require the change of at least eight (8) of the total number of characters when passwords are changed.
If the SUSE operating system allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increasing the window of opportunity for at...Rule Medium Severity -
SRG-OS-000120-GPOS-00061
Group -
The SUSE operating system must employ FIPS 140-2 approved cryptographic hashing algorithm for system authentication (login.defs).
Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied on to provide confidentiality or integrity, and DoD data may be co...Rule Medium Severity -
SRG-OS-000073-GPOS-00041
Group -
The SUSE operating system must employ FIPS 140-2-approved cryptographic hashing algorithms for all stored passwords.
The system must use a strong hashing algorithm to store the password. The system must use a sufficient number of hashing rounds to ensure the required level of entropy. Passwords need to be protec...Rule Medium Severity -
SRG-OS-000073-GPOS-00041
Group -
SRG-OS-000480-GPOS-00227
Group -
The SUSE operating system must not be configured to allow blank or null passwords.
Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily ...Rule Medium Severity
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