leviathan
52e8c99022
- core/module.h: struct iamroot_module + iamroot_result_t
- core/registry.{h,c}: flat-array module registry with find-by-name
- modules/copy_fail_family/iamroot_modules.{h,c}: bridge layer
exposing 5 modules (copy_fail, copy_fail_gcm, dirty_frag_esp,
dirty_frag_esp6, dirty_frag_rxrpc) wired to the absorbed DIRTYFAIL
detect/exploit functions; df_result_t/iamroot_result_t share numeric
values intentionally for zero-cost translation
- iamroot.c: top-level CLI dispatcher with --scan / --list / --exploit /
--mitigate / --cleanup, JSON output, --i-know gate
- Restored modules/copy_fail_family/src/ structure (DIRTYFAIL Makefile
expects it; the initial flat copy broke that contract)
- Top-level Makefile builds one binary; filters out DIRTYFAIL's
original dirtyfail.c main so it doesn't conflict with iamroot.c
Verified end-to-end on kctf-mgr (Linux): clean compile, 5 modules
register, --scan --json output ingest-ready, exit codes propagate.
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*
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* DIRTYFAIL — mitigate.h
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*
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* Defensive companion to the exploit modes: applies all known
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* mitigations for Copy Fail / Dirty Frag in one shot. Intended for
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* sysadmins who want a fast "fix this until the kernel patch lands"
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* deployment.
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*
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* What `--mitigate` does:
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*
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* 1. Writes /etc/modprobe.d/dirtyfail-mitigations.conf with
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* `install <mod> /bin/false` blacklists for:
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* - algif_aead (Copy Fail authencesn primitive)
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* - esp4 + esp6 (Dirty Frag xfrm-ESP path)
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* - rxrpc (Dirty Frag RxRPC path)
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*
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* 2. rmmods any of those that are currently loaded.
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*
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* 3. Sets `kernel.apparmor_restrict_unprivileged_userns=1` (where
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* AppArmor is loaded). Persists via /etc/sysctl.d/.
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*
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* 4. Drops the page cache to evict any pre-existing page-cache
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* modifications.
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*
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* 5. Reports what it did so the operator can audit / undo.
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*
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* Caveats:
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* - Requires root.
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* - Disabling esp4/esp6 breaks IPsec / strongSwan.
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* - Disabling rxrpc breaks AFS clients.
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* - These are interim mitigations; the right fix is the kernel patch.
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*
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* Run with `--cleanup-mitigate` to undo (removes the blacklist conf,
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* removes the sysctl conf, but does not unload modules — operator
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* decides if/when to reload).
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*/
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#ifndef DIRTYFAIL_MITIGATE_H
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#define DIRTYFAIL_MITIGATE_H
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#include "common.h"
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df_result_t mitigate_apply(void);
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df_result_t mitigate_revert(void);
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#endif
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