Restrict ptrace attach to privileged users#193
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Signed-off-by: Martin Schurz <Martin.Schurz@telekom.de>
Signed-off-by: Martin Schurz <Martin.Schurz@telekom.de>
rndmh3ro
reviewed
May 26, 2026
| desc 'Ensure kernel.yama.ptrace_scope is set to at least 2 so unprivileged users cannot attach ptrace to arbitrary processes.' | ||
| only_if { !container_execution } | ||
| describe kernel_parameter('kernel.yama.ptrace_scope') do | ||
| its(:value) { should eq(2).or eq(3).or eq(nil) } # include nil because SuSE does not have this parameter |
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Could we work with an only_if here?
only_if { !container_execution && !os.suse? }
not sure about the syntax anymore.
Signed-off-by: Martin Schurz <Martin.Schurz@telekom.de>
rndmh3ro
approved these changes
May 26, 2026
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This pull request adds a new security control to the
sysctl_spec.rbfile to ensure that only privileged users can use ptrace to attach to processes. This helps prevent unprivileged users from interfering with or inspecting other processes, enhancing system security.Security hardening:
sysctl-35) to verify that thekernel.yama.ptrace_scopeparameter is set to at least 2, restricting ptrace attach operations to privileged users.