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macOS post-exploitation for credential harvesting, DTrace monitoring, TCC bypass, and stealth operations via native tools
Windows userland post-exploitation for credential harvesting, monitoring, AMSI/ETW bypass, and stealth operations
Kubernetes post-exploitation for container escape, secret extraction, RBAC abuse, and cluster persistence
Basierend auf der SOC-Berufsklassifikation
| name | cis-ubuntu1604-v200-6-2-5 |
| description | Ensure users own their home directories |
| category | cis-iam |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-16.04","user-management","maintenance"] |
| cis_id | 6.2.5 |
| cis_benchmark | CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
The user home directory is space defined for the particular user to set local environment variables and to store personal files.
Since the user is accountable for files stored in the user home directory, the user must be the owner of the directory.
Run the following script and verify no results are returned:
#!/bin/bash
awk -F: '($1!~/(halt|sync|shutdown)/ && $7!~/^(\/usr)?\/sbin\/nologin(\/)?\$/
&& $7!~/(\/usr)?\/bin\/false(\/)?\$/) { print $1 " " $6 }' | while read -r
user dir; do
if [ ! -d "$dir" ]; then
echo "User: \"$user\" home directory: \"$dir\" does not exist."
else
owner=$(stat -L -c "%U" "$dir")
if [ "$owner" != "$user" ]; then
echo "User: \"$user\" home directory: \"$dir\" is owned by \"$owner\""
fi
fi
done
No output should be returned.
Change the ownership of any home directories that are not owned by the defined user to the correct user.
The following script will create missing home directories, set the owner, and set the permissions for interactive users' home directories:
#!/bin/bash
awk -F: '($1!~/(halt|sync|shutdown)/ && $7!~/^(\/usr)?\/sbin\/nologin(\/)?\$/
&& $7!~/(\/usr)?\/bin\/false(\/)?\$/) { print $1 " " $6 }' | while read -r
user dir; do
if [ ! -d "$dir" ]; then
echo "User: \"$user\" home directory: \"$dir\" does not exist, creating home directory"
mkdir "$dir"
chmod g-w,o-rwx "$dir"
chown "$user" "$dir"
else
owner=$(stat -L -c "%U" "$dir")
if [ "$owner" != "$user" ]; then
chmod g-w,o-rwx "$dir"
chown "$user" "$dir"
fi
fi
done
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| Controls Version | Control | IG 1 | IG 2 | IG 3 |
|---|---|---|---|---|
| v7 | 14.6 Protect Information through Access Control Lists Protect all information stored on systems with file system, network share, claims, application, or database specific access control lists. These controls will enforce the principle that only authorized individuals should have access to the information based on their need to access the information as a part of their responsibilities. |