leviathan
43e290b224
First USERSPACE LPE in IAMROOT (every prior module is kernel). Same
iamroot_module interface — the difference is the affected-version
check is package-version-based rather than kernel-version-based.
- modules/pwnkit_cve_2021_4034/:
- iamroot_modules.{c,h}: detect() locates setuid pkexec (one of
/usr/bin/pkexec, /usr/sbin/pkexec, /bin/pkexec, /sbin/pkexec,
/usr/local/bin/pkexec) and parses 'pkexec --version' output.
Handles BOTH version-string formats: legacy '0.105'/'0.120'
(older polkit) AND modern bare-integer '121'/'126' (post-0.121
rename to single-number scheme). Reports VULNERABLE on parse
failure (conservative).
- exploit() returns IAMROOT_PRECOND_FAIL with a 'not yet
implemented' message; full Qualys-PoC follow-up is the next
commit. ~200 lines including embedded .so generator.
- MODULE.md documents the bug, affected ranges, distro backport
landscape (RHEL 7/8, Ubuntu focal/impish, Debian buster/bullseye
each have their own backported polkit version).
- Embedded auditd + sigma detection rules:
auditd: pkexec watch + execve audit
sigma: pkexec invocation + suspicious env (GCONV_PATH, CHARSET)
- core/registry.h adds iamroot_register_pwnkit() declaration.
- iamroot.c main() registers pwnkit.
- Makefile gains the pwnkit family as a separate object set.
Verified end-to-end on kctf-mgr (modern polkit 126):
iamroot --list → 8 modules
iamroot --scan → pwnkit reports 'version 126 ≥ 0.121 (fixed)'
iamroot --detect-rules --format=auditd | grep pwnkit → emits
84 lines
2.7 KiB
Makefile
84 lines
2.7 KiB
Makefile
# IAMROOT — top-level Makefile (Phase 1)
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#
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# Builds one binary `iamroot` linked from:
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# - core/ module interface + registry
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# - modules/<f>/ one family per subdir, contributes objects to the
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# final binary
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# - iamroot.c top-level dispatcher
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#
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# Each family is currently flat (Phase 1 keeps copy_fail_family's
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# absorbed DIRTYFAIL source in modules/copy_fail_family/src/).
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# Future families register the same way: add their register_* call to
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# iamroot.c's main() and add their src dir to MODULE_DIRS below.
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CC ?= gcc
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CFLAGS ?= -O2 -Wall -Wextra -Wno-unused-parameter -Wno-pointer-arith \
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-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64
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LDFLAGS ?=
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BUILD := build
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BIN := iamroot
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# core/
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CORE_SRCS := core/registry.c core/kernel_range.c
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CORE_OBJS := $(patsubst %.c,$(BUILD)/%.o,$(CORE_SRCS))
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# Family: copy_fail_family
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# All DIRTYFAIL .c files contribute; iamroot_modules.c is the bridge.
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CFF_DIR := modules/copy_fail_family
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CFF_SRCS := $(wildcard $(CFF_DIR)/src/*.c) $(CFF_DIR)/iamroot_modules.c
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# Filter out the original dirtyfail.c (its main() conflicts with iamroot.c's main).
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CFF_SRCS := $(filter-out $(CFF_DIR)/src/dirtyfail.c, $(CFF_SRCS))
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CFF_OBJS := $(patsubst %.c,$(BUILD)/%.o,$(CFF_SRCS))
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# Family: dirty_pipe (single-CVE family, no shared infrastructure)
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DP_DIR := modules/dirty_pipe_cve_2022_0847
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DP_SRCS := $(DP_DIR)/iamroot_modules.c
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DP_OBJS := $(patsubst %.c,$(BUILD)/%.o,$(DP_SRCS))
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# Family: entrybleed (single-CVE family, x86_64 only)
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EB_DIR := modules/entrybleed_cve_2023_0458
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EB_SRCS := $(EB_DIR)/iamroot_modules.c
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EB_OBJS := $(patsubst %.c,$(BUILD)/%.o,$(EB_SRCS))
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# Family: pwnkit (userspace polkit bug, not kernel)
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PK_DIR := modules/pwnkit_cve_2021_4034
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PK_SRCS := $(PK_DIR)/iamroot_modules.c
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PK_OBJS := $(patsubst %.c,$(BUILD)/%.o,$(PK_SRCS))
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# Top-level dispatcher
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TOP_OBJ := $(BUILD)/iamroot.o
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ALL_OBJS := $(TOP_OBJ) $(CORE_OBJS) $(CFF_OBJS) $(DP_OBJS) $(EB_OBJS) $(PK_OBJS)
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.PHONY: all clean debug static help
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all: $(BIN)
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$(BIN): $(ALL_OBJS)
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$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^
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# Generic compile: any .c → corresponding .o under build/
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$(BUILD)/%.o: %.c
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@mkdir -p $(dir $@)
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$(CC) $(CFLAGS) -Icore -I$(CFF_DIR)/src -c -o $@ $<
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debug: CFLAGS := -O0 -g3 -Wall -Wextra -Wno-unused-parameter -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64
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debug: clean $(BIN)
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static: LDFLAGS += -static
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static: clean $(BIN)
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clean:
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rm -rf $(BUILD) $(BIN)
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help:
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@echo "Targets:"
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@echo " make build optimized iamroot binary"
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@echo " make debug build with -O0 -g3"
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@echo " make static build a fully static binary"
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@echo " make clean remove build artifacts"
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@echo ""
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@echo "Per-module (legacy) — not built by default:"
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@echo " cd modules/copy_fail_family && make"
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