* feat(native): report binary hardening for ELF, PE and Mach-O
Documents inspect_binary_hardening and its CLI equivalent, including
per-property states, supporting evidence, read budgets, and one report
per Mach-O slice. Explains that missing protection imports remain
unknown, signature presence does not establish validity, and hardened
runtime requires inspect_signature. Adds hardening links throughout the
documentation. The supplied diff also removes the advanced CodeQL
workflow and configuration, along with snapshot-binding mismatch
guidance.
* fix(native): validate declared payloads and dynamic tables before hardening rows
Run the shared range checks for ELF, read imports from the dynamic tables
rather than section metadata, and keep an unresolved symbol count apart from
an absent table. Check every Mach-O command before building rows and retain
only the offsets the rows need.
Make the verifier's readelf output wide, check the emitted format before
parsing Mach-O, and place the sources before the libraries in the link.
* fix(native): share Mach-O segment admission with hardening reads
A segment with a section count its cmdsize cannot hold passed the hardening
reader and could enable restrict_segment. Move the size, section count and
file range checks to a shared admission that readMachoImage and the hardening
reader both use, and pin the ELF load-size case with a regression test.
* fix(hardening): reject Mach-O section payloads past the slice and empty ELF interpreters
Segment admission never checked each section's payload range, so a
file-backed section past the slice still produced rows. Decode sections with
the section header owner and mark the slice malformed when a payload leaves
it; zero-fill and empty sections own no file bytes and are exempt.
admitInterp accepted a NUL first byte in a longer extent, which counted an
empty interpreter as PIE evidence. It now requires a nonempty path.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KuWHGvzJkrhCqjtEHUwqyH
* fix(native): read CFG instrumentation from decoded GuardFlags
Use the IMAGE_GUARD_CF_INSTRUMENTED flag that guardFlagRecord already
decodes instead of masking the raw GuardFlags word a second time.
* fix(native): reject ELF table spans a second PT_LOAD remaps
The hardening reader mapped DT_STRTAB, DT_SYMTAB and hash tables through
the one PT_LOAD containing the table's first address. A second PT_LOAD
starting inside the table could map the rest of it from other file bytes
and the reader still reported parsed import evidence.
Cap each mapping at the next PT_LOAD that starts inside it, reject a
requested range that crosses that boundary, and stop hash reads at the
same limit, matching the conflicting-mapping refusal in readElfSymbols.
* fix(native): dedupe ELF note tables only on shared boundaries
The hardening reader dropped any note table whose bytes another table
already covered. A covering SHT_NOTE can hold a non-GNU note whose
descriptor is itself a complete GNU property note, while PT_NOTE names
that inner note directly. Walking only the outer stream missed the GNU
marker and reported CET disabled.
Drop an alias only when it starts and ends on boundaries of admitted
tables, which are note boundaries of the walked streams. Any other
covered alias leaves the feature rows unknown, as a partial overlap
already does.
* fix(native): admit every Mach-O symbol record after a canary match
The Mach-O stack protector scan returned as soon as it found an
undefined ___stack_chk_fail, so a later undefined symbol whose n_strx
lay outside the string table was never checked. The same damaged table
parsed or failed as malformed depending only on record order.
Keep the match and finish the bounded record walk. Records after the
match are only checked against the string table bounds, so their names
are not read or charged to the scan budget. The ELF reader already
admits its whole symbol table before matching names.
* fix(native): accept ELF load aliases with the same file translation
The hardening reader treated every PT_LOAD that starts inside a table,
or that also contains the table's address, as a conflicting mapping.
A load with the same address-to-file translation names the same file
bytes, so tables it overlaps still have one interpretation, and the
canonical ElfLoadMap already merges such spans.
Treat equivalent loads as one interpretation. A load with a different
translation, or the zero-filled tail of an equivalent load, still ends
the usable range, so a remapped table is still rejected.
* fix(native): keep same-span ELF note tables with different alignments unknown
A section and a program header that share endpoints were treated as one
note stream even when their effective note alignments differed. Walking the
same bytes at 4 and 8 can frame different notes, so dropping the second table
could hide a GNU property word and report CET or BTI as disabled.
Require matching effective alignment at both endpoints, and no alignment
change inside the covered span, before treating a table as an alias.
Otherwise mark the feature rows unknown. The fixture's .note.gnu.property
section now declares the class's note alignment, as toolchains emit it.
* refactor(native): read LC_SYMTAB through the shared fixed-word decoder
Move the Mach-O fixed uint32 command layouts out of MachoCommandNames
into domain/apple/machoLoadCommands so there is one owner of those
offsets. MachoCommandNames and the hardening reader now both decode
through it; the hardening reader keeps its own bounds and import policy.
* fix(native): skip Mach-O common definitions in canary imports
A common definition sets N_UNDF|N_EXT like an import but stores its
allocation size in n_value. An object holding only
`int __stack_chk_fail;` therefore reported stack_protector: enabled.
Require a zero n_value before an undefined external counts as an
import, for both nlist widths.
* refactor(native): read linkedit data commands through the shared fixed-word decoder
readMachoLinkeditDataCommand reproduced the dataoff/datasize offsets that
FIXED_WORD_FIELDS already owns. Take the command and decode through
decodeMachoFixedWordFields, as readMachoSymtabCommand does, keeping the
truncation and endianness behavior.
* fix(native): skip empty SHT_NOTE sections in ELF hardening
A zero-sized SHT_NOTE owns no bytes, so the section directory marks it
not file-backed and the hardening reader rejected the whole image as
malformed, while readElfImage accepted the same bytes. Skip empty note
sections before the file-backing check; they have nothing to walk.
* fix(scripts): run hardening verifier commands through the shared owner
The binary hardening verifier started its probes and compiler drivers with
raw spawnSync, which bypassed the src/process/ supervision that AGENTS.md
requires. Every launch now goes through createVerifierCommands, and the
temporary root is removed only after the owner closes cleanly.
* fix(scripts): clean up hardening verifier commands on Ctrl-C
SIGINT or SIGTERM ended Node before withVerifierCleanup ran, so detached
compiler trees and the temporary root could outlive the verifier. The
verifier now turns those signals into an abort that every owned command
receives, so cleanup closes the owner and removes the root before exit.
* fix(scripts): fail the hardening verifier when a signal lands outside a command
Only the owned commands read the interruption signal, so a SIGINT or
SIGTERM during the final cleanup or between commands was recorded and
then dropped, and the verifier exited 0. After cleanup settles, the
verifier now throws the interruption reason. A failure the operation or
its cleanup already raised still leaves first and is not replaced.
* fix(native): fail Mach-O slices with a malformed encryption command
The hardening reader turned every malformed status from the shared
encryption reader into an unknown `encrypted` row, so a short
LC_ENCRYPTION_INFO_64 or an encrypted range past the slice still left the
slice parsed with a full report.
Only two conflicting encryption commands stay an unknown row now. Any other
encryption defect fails the slice like other structural command failures.
* fix(native): ignore STB_LOCAL undefined ELF symbols as imports
A local undefined __stack_chk_fail or __memcpy_chk is never resolved
against another object, so it does not establish an external import.
Skip STB_LOCAL bindings when reading protector signs, and give the
fixture's positive symbols STB_GLOBAL binding.
---------
Co-authored-by: Matt Van Horn <455140+mvanhorn@users.noreply.github.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
