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Fix duplicate sysctl config in fs #505

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Nov 26, 2021
Merged

Fix duplicate sysctl config in fs #505

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16 changes: 6 additions & 10 deletions roles/os_hardening/defaults/main.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,12 @@ sysctl_config:
# filenames (generally seen as "/tmp file race" vulnerabilities).
fs.protected_hardlinks: 1
fs.protected_symlinks: 1

# For more info on the following settings see: https://www.kernel.org/doc/html/latest/admin-guide/sysctl/fs.html
# Restrict FIFO special device creation behavior
fs.protected_fifos: 1
# Restrict regular files creation behavior
fs.protected_regular: 2

# Prevent core dumps with SUID. These are usually only
# needed by developers and may contain sensitive information. | sysctl-31
Expand Down Expand Up @@ -290,16 +296,6 @@ sysctl_config:
# Mitigates CVE-2021-33909 and other exploits.
kernel.unprivileged_userns_clone: 0

# For more info on the following settings see: https://www.kernel.org/doc/html/latest/admin-guide/sysctl/fs.html
# Restrict FIFO special device creation behavior
fs.protected_fifos: 1
# Restrict hardlink creation behavior
fs.protected_hardlinks: 1
# Restrict regular files creation behavior
fs.protected_regular: 2
# Restrict symlink following behavior
fs.protected_symlinks: 1

# Do not delete the following line or otherwise the playbook will fail
# at task 'create a combined sysctl-dict if overwrites are defined'
sysctl_overwrite:
Expand Down