Red Hat Enterprise Linux 9 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-OS-000123-GPOS-00064
<GroupDescription></GroupDescription>Group -
RHEL 9 must automatically expire temporary accounts within 72 hours.
<VulnDiscussion>Temporary accounts are privileged or nonprivileged accounts that are established during pressing circumstances, such as new s...Rule Medium Severity -
SRG-OS-000104-GPOS-00051
<GroupDescription></GroupDescription>Group -
All RHEL 9 interactive users must have a primary group that exists.
<VulnDiscussion>If a user is assigned the Group Identifier (GID) of a group that does not exist on the system, and a group with the GID is su...Rule Medium Severity -
SRG-OS-000118-GPOS-00060
<GroupDescription></GroupDescription>Group -
RHEL 9 must disable account identifiers (individuals, groups, roles, and devices) after 35 days of inactivity.
<VulnDiscussion>Inactive identifiers pose a risk to systems and applications because attackers may exploit an inactive identifier and potenti...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
Executable search paths within the initialization files of all local interactive RHEL 9 users must only contain paths that resolve to the system default or the users home directory.
<VulnDiscussion>The executable search path (typically the PATH environment variable) contains a list of directories for the shell to search t...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
All RHEL 9 local interactive users must have a home directory assigned in the /etc/passwd file.
<VulnDiscussion>If local interactive users are not assigned a valid home directory, there is no place for the storage and control of files th...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
All RHEL 9 local interactive user home directories defined in the /etc/passwd file must exist.
<VulnDiscussion>If a local interactive user has a home directory defined that does not exist, the user may be given access to the / directory...Rule Medium Severity -
SRG-OS-000480-GPOS-00227
<GroupDescription></GroupDescription>Group -
All RHEL 9 local interactive user home directories must be group-owned by the home directory owner's primary group.
<VulnDiscussion>If the Group Identifier (GID) of a local interactive users home directory is not the same as the primary GID of the user, thi...Rule Medium Severity -
SRG-OS-000329-GPOS-00128
<GroupDescription></GroupDescription>Group -
RHEL 9 must automatically lock an account when three unsuccessful logon attempts occur.
<VulnDiscussion>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise...Rule Medium Severity -
SRG-OS-000329-GPOS-00128
<GroupDescription></GroupDescription>Group -
RHEL 9 must automatically lock the root account until the root account is released by an administrator when three unsuccessful logon attempts occur during a 15-minute time period.
<VulnDiscussion>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, also know...Rule Medium Severity -
SRG-OS-000329-GPOS-00128
<GroupDescription></GroupDescription>Group -
RHEL 9 must automatically lock an account when three unsuccessful logon attempts occur during a 15-minute time period.
<VulnDiscussion>By limiting the number of failed logon attempts the risk of unauthorized system access via user password guessing, otherwise ...Rule Medium Severity
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