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implement sysctl-34 - link protection settings #494

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Oct 24, 2021
Merged

implement sysctl-34 - link protection settings #494

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implement sysctl-34 - link protection settings
Oct 20, 2021
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Update roles/os_hardening/defaults/main.yml
rndmh3ro Oct 24, 2021
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10 changes: 10 additions & 0 deletions roles/os_hardening/defaults/main.yml
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Expand Up @@ -290,6 +290,16 @@ 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: 1
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# 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:
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