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Restrict ptrace attach to privileged users #193

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Merged
schurzi merged 3 commits into from
May 26, 2026
+11 −0
Merged

Restrict ptrace attach to privileged users #193

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875170f
Restrict ptrace attach to privileged users
schurzi May 24, 2026
f0a3f60
Add exception for SuSE Linus
schurzi May 25, 2026
9f4f071
Move condition to only_if
schurzi May 26, 2026
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11 changes: 11 additions & 0 deletions controls/sysctl_spec.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -432,3 +432,14 @@
its(:value) { should eq 1 }
end
end

control 'sysctl-35' do
impact 1.0
title 'Restrict ptrace attach to privileged users'
desc 'Ensure kernel.yama.ptrace_scope is set to at least 2 so unprivileged users cannot attach ptrace to arbitrary processes.'
# exclude SuSE because it does not have this parameter
only_if { !(container_execution || os.suse?) }
describe kernel_parameter('kernel.yama.ptrace_scope') do
its(:value) { should >= 2 }
end
end