leviathan
9593d90385
Breaking change. Tool name, binary name, function/type names,
constant names, env vars, header guards, file paths, and GitHub
repo URL all rebrand IAMROOT → SKELETONKEY.
Changes:
- All "IAMROOT" → "SKELETONKEY" (constants, env vars, enum
values, docs, comments)
- All "iamroot" → "skeletonkey" (functions, types, paths, CLI)
- iamroot.c → skeletonkey.c
- modules/*/iamroot_modules.{c,h} → modules/*/skeletonkey_modules.{c,h}
- tools/iamroot-fleet-scan.sh → tools/skeletonkey-fleet-scan.sh
- Binary "iamroot" → "skeletonkey"
- GitHub URL KaraZajac/IAMROOT → KaraZajac/SKELETONKEY
- .gitignore now expects build output named "skeletonkey"
- /tmp/iamroot-* tmpfiles → /tmp/skeletonkey-*
- Env vars IAMROOT_MODPROBE_PATH etc. → SKELETONKEY_*
New ASCII skeleton-key banner (horizontal key icon + ANSI Shadow
SKELETONKEY block letters) replaces the IAMROOT banner in
skeletonkey.c and README.md.
VERSION: 0.3.1 → 0.4.0 (breaking).
Build clean on Debian 6.12.86. `skeletonkey --version` → 0.4.0.
All 24 modules still register; no functional code changes — pure
rename + banner refresh.
1.1 KiB
NOTICE — fuse_legacy (CVE-2022-0185)
Vulnerability
CVE-2022-0185 — legacy_parse_param in fsconfig() doesn't validate
PAGE_SIZE against the running fs_context's key/value length →
4 KB heap OOB write → cross-cache UAF → cred overwrite from a
rootless container.
Research credit
Discovered and disclosed by William Liu + Jamie Hill-Daniel (Crusaders of Rust), January 2022.
Original writeup: https://www.willsroot.io/2022/01/cve-2022-0185.html Public PoC: https://github.com/Crusaders-of-Rust/CVE-2022-0185
Upstream fix: mainline 5.16.2 (Jan 2022). Branch backports: 5.16.2 / 5.15.14 / 5.10.91 / 5.4.171.
SKELETONKEY role
userns+mountns reach, fsopen("cgroup2") + double
fsconfig(FSCONFIG_SET_STRING, "source", ...) fires the 4k OOB,
msg_msg cross-cache groom in kmalloc-4k. MSG_COPY read-back detects
whether the OOB landed in an adjacent neighbour — the sanity gate
that prevents fake-success claims.
--full-chain extends with forged m_list/m_ts overflow toward
modprobe_path via the shared finisher.
Container-escape angle — relevant to rootless docker/podman/snap.