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v4.1.0: source-only build, multithreaded-encryption fix, security hardening

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Build from source with no vendored binaries:
- Remove prebuilt libzuptsdk.so / libpqvaptvupt.so (and a stray .pyc). The
  default build needs only a C compiler + make; it links no external library
  and installs no .so. The libzuptsdk-backed modes (Argon2id KDF, --pq-sdk,
  --pq-box) are gated behind an opt-in `make WITH_SDK=1`. The default password
  KDF is PBKDF2-SHA256 and --pq (native ML-KEM-768 + X25519) is the built-in PQ
  mode. openSUSE/RPM/deb/AUR/Homebrew/Nix recipes bumped to 4.1.0; the openSUSE
  spec now builds source-only (%files ships no .so, %build/%install WITH_SDK=0).

Fix: multithreaded encrypted archives were unextractable on the native AEAD
path. The parallel compress/decompress workers skipped the F-09 frame-preface
AAD that the serial path and the archive's AAD_PREFACE flag bind into every
block MAC, so each multithreaded block failed authentication. The workers now
bind the preface via a shared serializer; output is byte-identical across
thread counts and interoperates with single-threaded archives (also fixes
`--kdf pbkdf2 -t N` in any build).

Security hardening (crafted-archive memory safety + crypto):
- LZH raw code-length stack overflow + huff_lut OOB write
- overflow-safe bounds in parse_index and solid-mode extract (heap OOB read)
- SEQ decoder safe-zone heap overflow (litlen+matchlen reserve)
- require the per-block ENCRYPTED flag on encrypted archives (plaintext forgery)
- cap archive-supplied PBKDF2 iteration count (KDF-amplification DoS)
- non-elidable secret wipe in the SDK path; restored disk images created 0600

Docs: remove AUDIT.md / BENCHMARKS.md / ROADMAP.md; trim marketing/AI-styled
text and correct KDF/PQ facts across README, SECURITY, INSTALL, DISTRIBUTION,
THREAT_MODEL, THIRD-PARTY-NOTICES, the man page, and packaging READMEs. Wire
format v1.6 unchanged.
This commit is contained in:
Cristian Cezar Moisés 2026-07-07 19:45:37 -03:00
commit 4874010d0e
39 changed files with 1097 additions and 2770 deletions
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19
packaging/debian/changelog
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@ -1,3 +1,22 @@
vaptvupt (4.1.0-1) UNRELEASED; urgency=high
* Source-only build: the prebuilt vendored libraries libzuptsdk.so and
libpqvaptvupt.so are removed; the package builds with no external
library dependency and ships no shared object. The default password
KDF is PBKDF2-SHA256 (600k); the Argon2id KDF and the --pq-sdk /
--pq-box modes are gated behind an upstream WITH_SDK=1 build. Native
--pq (ML-KEM-768 + X25519) is unchanged.
* Fix: multithreaded encrypted archives were unextractable on the
native AEAD path — the parallel workers now bind the F-09 frame-
preface AAD like the serial path. Byte-identical across thread counts.
* Security: LZH raw code-length stack overflow and huff_lut OOB;
integer-overflow heap OOB reads in the index and solid-mode parsers;
SEQ decoder safe-zone heap overflow; per-block ENCRYPTED-flag
authentication gate; PBKDF2 iteration-count DoS cap; non-elidable
secret wipe; restored disk images created 0600. Wire format v1.6.
-- Cristian Cezar Moisés <sac@securityops.co> Tue, 07 Jul 2026 12:00:00 +0000
vaptvupt (4.0.0-1) UNRELEASED; urgency=high
* Codec upgraded to canonical VaptVupt 2.60.4 (security release):