KaraZajac
ada56b0db3
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CIFSwitch is the newest kernel-7-era LPE not already in the corpus: a
~19-year-old logic flaw in fs/smb/client/cifs_spnego.c where the
cifs.spnego request-key type accepts key descriptions created by
userspace (add_key(2)/request_key(2)) without verifying the request came
from the in-kernel CIFS client. The description's authority-bearing
fields (pid/uid/creduid/upcall_target) are trusted by the root cifs.upcall
helper; with user+mount namespace tricks an unprivileged user coerces
cifs.upcall into loading an attacker NSS module as root. Fixed upstream by
3da1fdf4efbc (merged 7.1-rc5); CWE-20; not in CISA KEV.
Takes the corpus to 42 modules / 37 CVEs.
🟡 honest port — full chain not VM-verified. detect() gates on the kernel
version (Debian backports 5.10.257/6.1.174/6.12.90/7.0.10) AND on the
cifs userspace path (cifs.upcall / cifs.spnego request-key rule), so a
vulnerable kernel without cifs-utils is PRECOND_FAIL not a false positive
(override via SKELETONKEY_CIFS_ASSUME_PRESENT=1/0). exploit() fires only
the non-destructive add_key(2) cifs.spnego probe (no upcall, loads
nothing, revoked immediately) and returns EXPLOIT_FAIL without a euid-0
witness — the namespace+NSS root-pop is not bundled until VM-verified.
--mitigate blocklists the cifs module; --cleanup reverts.
Wired everywhere: registry, Makefile, safety rank (86), 6 detect() test
rows (env-driven precondition override), CVE_METADATA.json + cve_metadata.c
+ KEV_CROSSREF.md (sorted insert, CWE-20/T1068/not-KEV), README + CVES.md
+ website counts (42/37) and a yellow module pill, RELEASE_NOTES v0.9.10,
verify-vm target (sweep pending). Credit: Asim Manizada. Version 0.9.10.
58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
/*
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* SKELETONKEY — canonical "register every module family" enumeration.
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*
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* Kept in its own translation unit so registry.c stays standalone:
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* the kernel_range unit-test binary links registry.c (for the basic
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* register / count / find API) without pulling in every module's
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* symbol. The main binary and detect-integration test link this
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* file too and get the full lineup.
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*
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* Adding a new module is one new register_<family>() declaration in
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* registry.h plus one call below — the integration test picks it up
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* via skeletonkey_register_all_modules() in its main().
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*/
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#include "registry.h"
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void skeletonkey_register_all_modules(void)
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{
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skeletonkey_register_copy_fail_family();
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skeletonkey_register_dirty_pipe();
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skeletonkey_register_entrybleed();
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skeletonkey_register_pwnkit();
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skeletonkey_register_nf_tables();
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skeletonkey_register_overlayfs();
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skeletonkey_register_cls_route4();
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skeletonkey_register_dirty_cow();
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skeletonkey_register_ptrace_traceme();
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skeletonkey_register_netfilter_xtcompat();
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skeletonkey_register_af_packet();
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skeletonkey_register_fuse_legacy();
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skeletonkey_register_stackrot();
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skeletonkey_register_af_packet2();
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skeletonkey_register_cgroup_release_agent();
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skeletonkey_register_overlayfs_setuid();
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skeletonkey_register_nft_set_uaf();
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skeletonkey_register_af_unix_gc();
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skeletonkey_register_nft_fwd_dup();
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skeletonkey_register_nft_payload();
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skeletonkey_register_sudo_samedit();
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skeletonkey_register_sequoia();
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skeletonkey_register_sudoedit_editor();
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skeletonkey_register_vmwgfx();
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skeletonkey_register_dirtydecrypt();
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skeletonkey_register_fragnesia();
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skeletonkey_register_pack2theroot();
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skeletonkey_register_sudo_chwoot();
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skeletonkey_register_udisks_libblockdev();
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skeletonkey_register_pintheft();
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skeletonkey_register_mutagen_astronomy();
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skeletonkey_register_sudo_runas_neg1();
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skeletonkey_register_tioscpgrp();
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skeletonkey_register_vsock_uaf();
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skeletonkey_register_nft_pipapo();
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skeletonkey_register_ptrace_pidfd();
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skeletonkey_register_sudo_host();
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skeletonkey_register_cifswitch();
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}
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