From 2e3fadbf730fd0d13c891d5e555af3e7f39ca3f4 Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 1 Jul 2014 16:40:19 +0100 Subject: PKCS#7: Implement a parser [RFC 2315] Implement a parser for a PKCS#7 signed-data message as described in part of RFC 2315. Signed-off-by: David Howells Acked-by: Vivek Goyal Reviewed-by: Kees Cook --- include/crypto/pkcs7.h | 23 +++++++++++++++++++++++ include/linux/oid_registry.h | 1 + 2 files changed, 24 insertions(+) create mode 100644 include/crypto/pkcs7.h (limited to 'include') diff --git a/include/crypto/pkcs7.h b/include/crypto/pkcs7.h new file mode 100644 index 000000000000..8f2628fbdfce --- /dev/null +++ b/include/crypto/pkcs7.h @@ -0,0 +1,23 @@ +/* PKCS#7 crypto data parser + * + * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +struct pkcs7_message; + +/* + * pkcs7_parser.c + */ +extern struct pkcs7_message *pkcs7_parse_message(const void *data, + size_t datalen); +extern void pkcs7_free_message(struct pkcs7_message *pkcs7); + +extern int pkcs7_get_content_data(const struct pkcs7_message *pkcs7, + const void **_data, size_t *_datalen, + bool want_wrapper); diff --git a/include/linux/oid_registry.h b/include/linux/oid_registry.h index 6926db724258..edeff85cb1e8 100644 --- a/include/linux/oid_registry.h +++ b/include/linux/oid_registry.h @@ -55,6 +55,7 @@ enum OID { OID_certAuthInfoAccess, /* 1.3.6.1.5.5.7.1.1 */ OID_msOutlookExpress, /* 1.3.6.1.4.1.311.16.4 */ OID_sha1, /* 1.3.14.3.2.26 */ + OID_sha256, /* 2.16.840.1.101.3.4.2.1 */ /* Distinguished Name attribute IDs [RFC 2256] */ OID_commonName, /* 2.5.4.3 */ -- cgit v1.2.3 From a4730357ee724f8c64f0292541ba3da8a95510fb Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 1 Jul 2014 16:40:19 +0100 Subject: PKCS#7: Find the right key in the PKCS#7 key list and verify the signature Find the appropriate key in the PKCS#7 key list and verify the signature with it. There may be several keys in there forming a chain. Any link in that chain or the root of that chain may be in our keyrings. Signed-off-by: David Howells Acked-by: Vivek Goyal Reviewed-by: Kees Cook --- include/crypto/pkcs7.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') diff --git a/include/crypto/pkcs7.h b/include/crypto/pkcs7.h index 8f2628fbdfce..8ba0f3810d67 100644 --- a/include/crypto/pkcs7.h +++ b/include/crypto/pkcs7.h @@ -21,3 +21,8 @@ extern void pkcs7_free_message(struct pkcs7_message *pkcs7); extern int pkcs7_get_content_data(const struct pkcs7_message *pkcs7, const void **_data, size_t *_datalen, bool want_wrapper); + +/* + * pkcs7_verify.c + */ +extern int pkcs7_verify(struct pkcs7_message *pkcs7); -- cgit v1.2.3 From 08815b62d700e4fbeb72a01986ad051c3dd84a15 Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 1 Jul 2014 16:40:20 +0100 Subject: PKCS#7: Find intersection between PKCS#7 message and known, trusted keys Find the intersection between the X.509 certificate chain contained in a PKCS#7 message and a set of keys that we already know and trust. Signed-off-by: David Howells Acked-by: Vivek Goyal Reviewed-by: Kees Cook --- include/crypto/pkcs7.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include') diff --git a/include/crypto/pkcs7.h b/include/crypto/pkcs7.h index 8ba0f3810d67..691c79172a26 100644 --- a/include/crypto/pkcs7.h +++ b/include/crypto/pkcs7.h @@ -9,6 +9,7 @@ * 2 of the Licence, or (at your option) any later version. */ +struct key; struct pkcs7_message; /* @@ -22,6 +23,13 @@ extern int pkcs7_get_content_data(const struct pkcs7_message *pkcs7, const void **_data, size_t *_datalen, bool want_wrapper); +/* + * pkcs7_trust.c + */ +extern int pkcs7_validate_trust(struct pkcs7_message *pkcs7, + struct key *trust_keyring, + bool *_trusted); + /* * pkcs7_verify.c */ -- cgit v1.2.3 From 9c87e0f10e281f782312e7b6aa202f2d434c84bf Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 1 Jul 2014 16:02:51 +0100 Subject: Provide PE binary definitions Provide some PE binary structural and constant definitions as taken from the pesign package sources. Signed-off-by: David Howells Acked-by: Vivek Goyal Reviewed-by: Kees Cook --- include/linux/pe.h | 448 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 448 insertions(+) create mode 100644 include/linux/pe.h (limited to 'include') diff --git a/include/linux/pe.h b/include/linux/pe.h new file mode 100644 index 000000000000..e170b95e763b --- /dev/null +++ b/include/linux/pe.h @@ -0,0 +1,448 @@ +/* + * Copyright 2011 Red Hat, Inc. + * All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * Author(s): Peter Jones + */ +#ifndef __LINUX_PE_H +#define __LINUX_PE_H + +#include + +#define MZ_MAGIC 0x5a4d /* "MZ" */ + +struct mz_hdr { + uint16_t magic; /* MZ_MAGIC */ + uint16_t lbsize; /* size of last used block */ + uint16_t blocks; /* pages in file, 0x3 */ + uint16_t relocs; /* relocations */ + uint16_t hdrsize; /* header size in "paragraphs" */ + uint16_t min_extra_pps; /* .bss */ + uint16_t max_extra_pps; /* runtime limit for the arena size */ + uint16_t ss; /* relative stack segment */ + uint16_t sp; /* initial %sp register */ + uint16_t checksum; /* word checksum */ + uint16_t ip; /* initial %ip register */ + uint16_t cs; /* initial %cs relative to load segment */ + uint16_t reloc_table_offset; /* offset of the first relocation */ + uint16_t overlay_num; /* overlay number. set to 0. */ + uint16_t reserved0[4]; /* reserved */ + uint16_t oem_id; /* oem identifier */ + uint16_t oem_info; /* oem specific */ + uint16_t reserved1[10]; /* reserved */ + uint32_t peaddr; /* address of pe header */ + char message[64]; /* message to print */ +}; + +struct mz_reloc { + uint16_t offset; + uint16_t segment; +}; + +#define PE_MAGIC 0x00004550 /* "PE\0\0" */ +#define PE_OPT_MAGIC_PE32 0x010b +#define PE_OPT_MAGIC_PE32_ROM 0x0107 +#define PE_OPT_MAGIC_PE32PLUS 0x020b + +/* machine type */ +#define IMAGE_FILE_MACHINE_UNKNOWN 0x0000 +#define IMAGE_FILE_MACHINE_AM33 0x01d3 +#define IMAGE_FILE_MACHINE_AMD64 0x8664 +#define IMAGE_FILE_MACHINE_ARM 0x01c0 +#define IMAGE_FILE_MACHINE_ARMV7 0x01c4 +#define IMAGE_FILE_MACHINE_EBC 0x0ebc +#define IMAGE_FILE_MACHINE_I386 0x014c +#define IMAGE_FILE_MACHINE_IA64 0x0200 +#define IMAGE_FILE_MACHINE_M32R 0x9041 +#define IMAGE_FILE_MACHINE_MIPS16 0x0266 +#define IMAGE_FILE_MACHINE_MIPSFPU 0x0366 +#define IMAGE_FILE_MACHINE_MIPSFPU16 0x0466 +#define IMAGE_FILE_MACHINE_POWERPC 0x01f0 +#define IMAGE_FILE_MACHINE_POWERPCFP 0x01f1 +#define IMAGE_FILE_MACHINE_R4000 0x0166 +#define IMAGE_FILE_MACHINE_SH3 0x01a2 +#define IMAGE_FILE_MACHINE_SH3DSP 0x01a3 +#define IMAGE_FILE_MACHINE_SH3E 0x01a4 +#define IMAGE_FILE_MACHINE_SH4 0x01a6 +#define IMAGE_FILE_MACHINE_SH5 0x01a8 +#define IMAGE_FILE_MACHINE_THUMB 0x01c2 +#define IMAGE_FILE_MACHINE_WCEMIPSV2 0x0169 + +/* flags */ +#define IMAGE_FILE_RELOCS_STRIPPED 0x0001 +#define IMAGE_FILE_EXECUTABLE_IMAGE 0x0002 +#define IMAGE_FILE_LINE_NUMS_STRIPPED 0x0004 +#define IMAGE_FILE_LOCAL_SYMS_STRIPPED 0x0008 +#define IMAGE_FILE_AGGRESSIVE_WS_TRIM 0x0010 +#define IMAGE_FILE_LARGE_ADDRESS_AWARE 0x0020 +#define IMAGE_FILE_16BIT_MACHINE 0x0040 +#define IMAGE_FILE_BYTES_REVERSED_LO 0x0080 +#define IMAGE_FILE_32BIT_MACHINE 0x0100 +#define IMAGE_FILE_DEBUG_STRIPPED 0x0200 +#define IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP 0x0400 +#define IMAGE_FILE_NET_RUN_FROM_SWAP 0x0800 +#define IMAGE_FILE_SYSTEM 0x1000 +#define IMAGE_FILE_DLL 0x2000 +#define IMAGE_FILE_UP_SYSTEM_ONLY 0x4000 +#define IMAGE_FILE_BYTES_REVERSED_HI 0x8000 + +struct pe_hdr { + uint32_t magic; /* PE magic */ + uint16_t machine; /* machine type */ + uint16_t sections; /* number of sections */ + uint32_t timestamp; /* time_t */ + uint32_t symbol_table; /* symbol table offset */ + uint32_t symbols; /* number of symbols */ + uint16_t opt_hdr_size; /* size of optional header */ + uint16_t flags; /* flags */ +}; + +#define IMAGE_FILE_OPT_ROM_MAGIC 0x107 +#define IMAGE_FILE_OPT_PE32_MAGIC 0x10b +#define IMAGE_FILE_OPT_PE32_PLUS_MAGIC 0x20b + +#define IMAGE_SUBSYSTEM_UNKNOWN 0 +#define IMAGE_SUBSYSTEM_NATIVE 1 +#define IMAGE_SUBSYSTEM_WINDOWS_GUI 2 +#define IMAGE_SUBSYSTEM_WINDOWS_CUI 3 +#define IMAGE_SUBSYSTEM_POSIX_CUI 7 +#define IMAGE_SUBSYSTEM_WINDOWS_CE_GUI 9 +#define IMAGE_SUBSYSTEM_EFI_APPLICATION 10 +#define IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER 11 +#define IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER 12 +#define IMAGE_SUBSYSTEM_EFI_ROM_IMAGE 13 +#define IMAGE_SUBSYSTEM_XBOX 14 + +#define IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE 0x0040 +#define IMAGE_DLL_CHARACTERISTICS_FORCE_INTEGRITY 0x0080 +#define IMAGE_DLL_CHARACTERISTICS_NX_COMPAT 0x0100 +#define IMAGE_DLLCHARACTERISTICS_NO_ISOLATION 0x0200 +#define IMAGE_DLLCHARACTERISTICS_NO_SEH 0x0400 +#define IMAGE_DLLCHARACTERISTICS_NO_BIND 0x0800 +#define IMAGE_DLLCHARACTERISTICS_WDM_DRIVER 0x2000 +#define IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE 0x8000 + +/* the fact that pe32 isn't padded where pe32+ is 64-bit means union won't + * work right. vomit. */ +struct pe32_opt_hdr { + /* "standard" header */ + uint16_t magic; /* file type */ + uint8_t ld_major; /* linker major version */ + uint8_t ld_minor; /* linker minor version */ + uint32_t text_size; /* size of text section(s) */ + uint32_t data_size; /* size of data section(s) */ + uint32_t bss_size; /* size of bss section(s) */ + uint32_t entry_point; /* file offset of entry point */ + uint32_t code_base; /* relative code addr in ram */ + uint32_t data_base; /* relative data addr in ram */ + /* "windows" header */ + uint32_t image_base; /* preferred load address */ + uint32_t section_align; /* alignment in bytes */ + uint32_t file_align; /* file alignment in bytes */ + uint16_t os_major; /* major OS version */ + uint16_t os_minor; /* minor OS version */ + uint16_t image_major; /* major image version */ + uint16_t image_minor; /* minor image version */ + uint16_t subsys_major; /* major subsystem version */ + uint16_t subsys_minor; /* minor subsystem version */ + uint32_t win32_version; /* reserved, must be 0 */ + uint32_t image_size; /* image size */ + uint32_t header_size; /* header size rounded up to + file_align */ + uint32_t csum; /* checksum */ + uint16_t subsys; /* subsystem */ + uint16_t dll_flags; /* more flags! */ + uint32_t stack_size_req;/* amt of stack requested */ + uint32_t stack_size; /* amt of stack required */ + uint32_t heap_size_req; /* amt of heap requested */ + uint32_t heap_size; /* amt of heap required */ + uint32_t loader_flags; /* reserved, must be 0 */ + uint32_t data_dirs; /* number of data dir entries */ +}; + +struct pe32plus_opt_hdr { + uint16_t magic; /* file type */ + uint8_t ld_major; /* linker major version */ + uint8_t ld_minor; /* linker minor version */ + uint32_t text_size; /* size of text section(s) */ + uint32_t data_size; /* size of data section(s) */ + uint32_t bss_size; /* size of bss section(s) */ + uint32_t entry_point; /* file offset of entry point */ + uint32_t code_base; /* relative code addr in ram */ + /* "windows" header */ + uint64_t image_base; /* preferred load address */ + uint32_t section_align; /* alignment in bytes */ + uint32_t file_align; /* file alignment in bytes */ + uint16_t os_major; /* major OS version */ + uint16_t os_minor; /* minor OS version */ + uint16_t image_major; /* major image version */ + uint16_t image_minor; /* minor image version */ + uint16_t subsys_major; /* major subsystem version */ + uint16_t subsys_minor; /* minor subsystem version */ + uint32_t win32_version; /* reserved, must be 0 */ + uint32_t image_size; /* image size */ + uint32_t header_size; /* header size rounded up to + file_align */ + uint32_t csum; /* checksum */ + uint16_t subsys; /* subsystem */ + uint16_t dll_flags; /* more flags! */ + uint64_t stack_size_req;/* amt of stack requested */ + uint64_t stack_size; /* amt of stack required */ + uint64_t heap_size_req; /* amt of heap requested */ + uint64_t heap_size; /* amt of heap required */ + uint32_t loader_flags; /* reserved, must be 0 */ + uint32_t data_dirs; /* number of data dir entries */ +}; + +struct data_dirent { + uint32_t virtual_address; /* relative to load address */ + uint32_t size; +}; + +struct data_directory { + struct data_dirent exports; /* .edata */ + struct data_dirent imports; /* .idata */ + struct data_dirent resources; /* .rsrc */ + struct data_dirent exceptions; /* .pdata */ + struct data_dirent certs; /* certs */ + struct data_dirent base_relocations; /* .reloc */ + struct data_dirent debug; /* .debug */ + struct data_dirent arch; /* reservered */ + struct data_dirent global_ptr; /* global pointer reg. Size=0 */ + struct data_dirent tls; /* .tls */ + struct data_dirent load_config; /* load configuration structure */ + struct data_dirent bound_imports; /* no idea */ + struct data_dirent import_addrs; /* import address table */ + struct data_dirent delay_imports; /* delay-load import table */ + struct data_dirent clr_runtime_hdr; /* .cor (object only) */ + struct data_dirent reserved; +}; + +struct section_header { + char name[8]; /* name or "/12\0" string tbl offset */ + uint32_t virtual_size; /* size of loaded section in ram */ + uint32_t virtual_address; /* relative virtual address */ + uint32_t raw_data_size; /* size of the section */ + uint32_t data_addr; /* file pointer to first page of sec */ + uint32_t relocs; /* file pointer to relocation entries */ + uint32_t line_numbers; /* line numbers! */ + uint16_t num_relocs; /* number of relocations */ + uint16_t num_lin_numbers; /* srsly. */ + uint32_t flags; +}; + +/* they actually defined 0x00000000 as well, but I think we'll skip that one. */ +#define IMAGE_SCN_RESERVED_0 0x00000001 +#define IMAGE_SCN_RESERVED_1 0x00000002 +#define IMAGE_SCN_RESERVED_2 0x00000004 +#define IMAGE_SCN_TYPE_NO_PAD 0x00000008 /* don't pad - obsolete */ +#define IMAGE_SCN_RESERVED_3 0x00000010 +#define IMAGE_SCN_CNT_CODE 0x00000020 /* .text */ +#define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040 /* .data */ +#define IMAGE_SCN_CNT_UNINITIALIZED_DATA 0x00000080 /* .bss */ +#define IMAGE_SCN_LNK_OTHER 0x00000100 /* reserved */ +#define IMAGE_SCN_LNK_INFO 0x00000200 /* .drectve comments */ +#define IMAGE_SCN_RESERVED_4 0x00000400 +#define IMAGE_SCN_LNK_REMOVE 0x00000800 /* .o only - scn to be rm'd*/ +#define IMAGE_SCN_LNK_COMDAT 0x00001000 /* .o only - COMDAT data */ +#define IMAGE_SCN_RESERVED_5 0x00002000 /* spec omits this */ +#define IMAGE_SCN_RESERVED_6 0x00004000 /* spec omits this */ +#define IMAGE_SCN_GPREL 0x00008000 /* global pointer referenced data */ +/* spec lists 0x20000 twice, I suspect they meant 0x10000 for one of them */ +#define IMAGE_SCN_MEM_PURGEABLE 0x00010000 /* reserved for "future" use */ +#define IMAGE_SCN_16BIT 0x00020000 /* reserved for "future" use */ +#define IMAGE_SCN_LOCKED 0x00040000 /* reserved for "future" use */ +#define IMAGE_SCN_PRELOAD 0x00080000 /* reserved for "future" use */ +/* and here they just stuck a 1-byte integer in the middle of a bitfield */ +#define IMAGE_SCN_ALIGN_1BYTES 0x00100000 /* it does what it says on the box */ +#define IMAGE_SCN_ALIGN_2BYTES 0x00200000 +#define IMAGE_SCN_ALIGN_4BYTES 0x00300000 +#define IMAGE_SCN_ALIGN_8BYTES 0x00400000 +#define IMAGE_SCN_ALIGN_16BYTES 0x00500000 +#define IMAGE_SCN_ALIGN_32BYTES 0x00600000 +#define IMAGE_SCN_ALIGN_64BYTES 0x00700000 +#define IMAGE_SCN_ALIGN_128BYTES 0x00800000 +#define IMAGE_SCN_ALIGN_256BYTES 0x00900000 +#define IMAGE_SCN_ALIGN_512BYTES 0x00a00000 +#define IMAGE_SCN_ALIGN_1024BYTES 0x00b00000 +#define IMAGE_SCN_ALIGN_2048BYTES 0x00c00000 +#define IMAGE_SCN_ALIGN_4096BYTES 0x00d00000 +#define IMAGE_SCN_ALIGN_8192BYTES 0x00e00000 +#define IMAGE_SCN_LNK_NRELOC_OVFL 0x01000000 /* extended relocations */ +#define IMAGE_SCN_MEM_DISCARDABLE 0x02000000 /* scn can be discarded */ +#define IMAGE_SCN_MEM_NOT_CACHED 0x04000000 /* cannot be cached */ +#define IMAGE_SCN_MEM_NOT_PAGED 0x08000000 /* not pageable */ +#define IMAGE_SCN_MEM_SHARED 0x10000000 /* can be shared */ +#define IMAGE_SCN_MEM_EXECUTE 0x20000000 /* can be executed as code */ +#define IMAGE_SCN_MEM_READ 0x40000000 /* readable */ +#define IMAGE_SCN_MEM_WRITE 0x80000000 /* writeable */ + +enum x64_coff_reloc_type { + IMAGE_REL_AMD64_ABSOLUTE = 0, + IMAGE_REL_AMD64_ADDR64, + IMAGE_REL_AMD64_ADDR32, + IMAGE_REL_AMD64_ADDR32N, + IMAGE_REL_AMD64_REL32, + IMAGE_REL_AMD64_REL32_1, + IMAGE_REL_AMD64_REL32_2, + IMAGE_REL_AMD64_REL32_3, + IMAGE_REL_AMD64_REL32_4, + IMAGE_REL_AMD64_REL32_5, + IMAGE_REL_AMD64_SECTION, + IMAGE_REL_AMD64_SECREL, + IMAGE_REL_AMD64_SECREL7, + IMAGE_REL_AMD64_TOKEN, + IMAGE_REL_AMD64_SREL32, + IMAGE_REL_AMD64_PAIR, + IMAGE_REL_AMD64_SSPAN32, +}; + +enum arm_coff_reloc_type { + IMAGE_REL_ARM_ABSOLUTE, + IMAGE_REL_ARM_ADDR32, + IMAGE_REL_ARM_ADDR32N, + IMAGE_REL_ARM_BRANCH2, + IMAGE_REL_ARM_BRANCH1, + IMAGE_REL_ARM_SECTION, + IMAGE_REL_ARM_SECREL, +}; + +enum sh_coff_reloc_type { + IMAGE_REL_SH3_ABSOLUTE, + IMAGE_REL_SH3_DIRECT16, + IMAGE_REL_SH3_DIRECT32, + IMAGE_REL_SH3_DIRECT8, + IMAGE_REL_SH3_DIRECT8_WORD, + IMAGE_REL_SH3_DIRECT8_LONG, + IMAGE_REL_SH3_DIRECT4, + IMAGE_REL_SH3_DIRECT4_WORD, + IMAGE_REL_SH3_DIRECT4_LONG, + IMAGE_REL_SH3_PCREL8_WORD, + IMAGE_REL_SH3_PCREL8_LONG, + IMAGE_REL_SH3_PCREL12_WORD, + IMAGE_REL_SH3_STARTOF_SECTION, + IMAGE_REL_SH3_SIZEOF_SECTION, + IMAGE_REL_SH3_SECTION, + IMAGE_REL_SH3_SECREL, + IMAGE_REL_SH3_DIRECT32_NB, + IMAGE_REL_SH3_GPREL4_LONG, + IMAGE_REL_SH3_TOKEN, + IMAGE_REL_SHM_PCRELPT, + IMAGE_REL_SHM_REFLO, + IMAGE_REL_SHM_REFHALF, + IMAGE_REL_SHM_RELLO, + IMAGE_REL_SHM_RELHALF, + IMAGE_REL_SHM_PAIR, + IMAGE_REL_SHM_NOMODE, +}; + +enum ppc_coff_reloc_type { + IMAGE_REL_PPC_ABSOLUTE, + IMAGE_REL_PPC_ADDR64, + IMAGE_REL_PPC_ADDR32, + IMAGE_REL_PPC_ADDR24, + IMAGE_REL_PPC_ADDR16, + IMAGE_REL_PPC_ADDR14, + IMAGE_REL_PPC_REL24, + IMAGE_REL_PPC_REL14, + IMAGE_REL_PPC_ADDR32N, + IMAGE_REL_PPC_SECREL, + IMAGE_REL_PPC_SECTION, + IMAGE_REL_PPC_SECREL16, + IMAGE_REL_PPC_REFHI, + IMAGE_REL_PPC_REFLO, + IMAGE_REL_PPC_PAIR, + IMAGE_REL_PPC_SECRELLO, + IMAGE_REL_PPC_GPREL, + IMAGE_REL_PPC_TOKEN, +}; + +enum x86_coff_reloc_type { + IMAGE_REL_I386_ABSOLUTE, + IMAGE_REL_I386_DIR16, + IMAGE_REL_I386_REL16, + IMAGE_REL_I386_DIR32, + IMAGE_REL_I386_DIR32NB, + IMAGE_REL_I386_SEG12, + IMAGE_REL_I386_SECTION, + IMAGE_REL_I386_SECREL, + IMAGE_REL_I386_TOKEN, + IMAGE_REL_I386_SECREL7, + IMAGE_REL_I386_REL32, +}; + +enum ia64_coff_reloc_type { + IMAGE_REL_IA64_ABSOLUTE, + IMAGE_REL_IA64_IMM14, + IMAGE_REL_IA64_IMM22, + IMAGE_REL_IA64_IMM64, + IMAGE_REL_IA64_DIR32, + IMAGE_REL_IA64_DIR64, + IMAGE_REL_IA64_PCREL21B, + IMAGE_REL_IA64_PCREL21M, + IMAGE_REL_IA64_PCREL21F, + IMAGE_REL_IA64_GPREL22, + IMAGE_REL_IA64_LTOFF22, + IMAGE_REL_IA64_SECTION, + IMAGE_REL_IA64_SECREL22, + IMAGE_REL_IA64_SECREL64I, + IMAGE_REL_IA64_SECREL32, + IMAGE_REL_IA64_DIR32NB, + IMAGE_REL_IA64_SREL14, + IMAGE_REL_IA64_SREL22, + IMAGE_REL_IA64_SREL32, + IMAGE_REL_IA64_UREL32, + IMAGE_REL_IA64_PCREL60X, + IMAGE_REL_IA64_PCREL60B, + IMAGE_REL_IA64_PCREL60F, + IMAGE_REL_IA64_PCREL60I, + IMAGE_REL_IA64_PCREL60M, + IMAGE_REL_IA64_IMMGPREL6, + IMAGE_REL_IA64_TOKEN, + IMAGE_REL_IA64_GPREL32, + IMAGE_REL_IA64_ADDEND, +}; + +struct coff_reloc { + uint32_t virtual_address; + uint32_t symbol_table_index; + union { + enum x64_coff_reloc_type x64_type; + enum arm_coff_reloc_type arm_type; + enum sh_coff_reloc_type sh_type; + enum ppc_coff_reloc_type ppc_type; + enum x86_coff_reloc_type x86_type; + enum ia64_coff_reloc_type ia64_type; + uint16_t data; + }; +}; + +/* + * Definitions for the contents of the certs data block + */ +#define WIN_CERT_TYPE_PKCS_SIGNED_DATA 0x0002 +#define WIN_CERT_TYPE_EFI_OKCS115 0x0EF0 +#define WIN_CERT_TYPE_EFI_GUID 0x0EF1 + +#define WIN_CERT_REVISION_1_0 0x0100 +#define WIN_CERT_REVISION_2_0 0x0200 + +struct win_certificate { + uint32_t length; + uint16_t revision; + uint16_t cert_type; +}; + +#endif /* __LINUX_PE_H */ -- cgit v1.2.3 From 26d1164be37f1145a96af15f294122876d8e5c77 Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 1 Jul 2014 16:02:51 +0100 Subject: pefile: Parse a PE binary to find a key and a signature contained therein Parse a PE binary to find a key and a signature contained therein. Later patches will check the signature and add the key if the signature checks out. Signed-off-by: David Howells Acked-by: Vivek Goyal Reviewed-by: Kees Cook --- include/linux/verify_pefile.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 include/linux/verify_pefile.h (limited to 'include') diff --git a/include/linux/verify_pefile.h b/include/linux/verify_pefile.h new file mode 100644 index 000000000000..ac34819214f9 --- /dev/null +++ b/include/linux/verify_pefile.h @@ -0,0 +1,18 @@ +/* Signed PE file verification + * + * Copyright (C) 2014 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#ifndef _LINUX_VERIFY_PEFILE_H +#define _LINUX_VERIFY_PEFILE_H + +extern int verify_pefile_signature(const void *pebuf, unsigned pelen, + struct key *trusted_keyring, bool *_trusted); + +#endif /* _LINUX_VERIFY_PEFILE_H */ -- cgit v1.2.3 From 4c0b4b1d1ae0cbc86f150e2905a1c3d2a17b7c1e Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 1 Jul 2014 16:02:52 +0100 Subject: pefile: Parse the "Microsoft individual code signing" data blob The PKCS#7 certificate should contain a "Microsoft individual code signing" data blob as its signed content. This blob contains a digest of the signed content of the PE binary and the OID of the digest algorithm used (typically SHA256). Signed-off-by: David Howells Acked-by: Vivek Goyal Reviewed-by: Kees Cook --- include/linux/oid_registry.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/oid_registry.h b/include/linux/oid_registry.h index edeff85cb1e8..c2bbf672b84e 100644 --- a/include/linux/oid_registry.h +++ b/include/linux/oid_registry.h @@ -52,8 +52,13 @@ enum OID { OID_md4, /* 1.2.840.113549.2.4 */ OID_md5, /* 1.2.840.113549.2.5 */ - OID_certAuthInfoAccess, /* 1.3.6.1.5.5.7.1.1 */ + /* Microsoft Authenticode & Software Publishing */ + OID_msIndirectData, /* 1.3.6.1.4.1.311.2.1.4 */ + OID_msPeImageDataObjId, /* 1.3.6.1.4.1.311.2.1.15 */ + OID_msIndividualSPKeyPurpose, /* 1.3.6.1.4.1.311.2.1.21 */ OID_msOutlookExpress, /* 1.3.6.1.4.1.311.16.4 */ + + OID_certAuthInfoAccess, /* 1.3.6.1.5.5.7.1.1 */ OID_sha1, /* 1.3.14.3.2.26 */ OID_sha256, /* 2.16.840.1.101.3.4.2.1 */ -- cgit v1.2.3 From 3be4beaf7c91ec9c6fefa5f11173af37113d10ae Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Tue, 20 Aug 2013 14:36:27 -0400 Subject: KEYS: verify a certificate is signed by a 'trusted' key Only public keys, with certificates signed by an existing 'trusted' key on the system trusted keyring, should be added to a trusted keyring. This patch adds support for verifying a certificate's signature. This is derived from David Howells pkcs7_request_asymmetric_key() patch. Changelog v6: - on error free key - Dmitry - validate trust only for not already trusted keys - Dmitry - formatting cleanup Changelog: - define get_system_trusted_keyring() to fix kbuild issues Signed-off-by: Mimi Zohar Signed-off-by: David Howells Acked-by: Dmitry Kasatkin --- include/keys/system_keyring.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/keys/system_keyring.h b/include/keys/system_keyring.h index 8dabc399bd1d..72665eb80692 100644 --- a/include/keys/system_keyring.h +++ b/include/keys/system_keyring.h @@ -17,7 +17,15 @@ #include extern struct key *system_trusted_keyring; - +static inline struct key *get_system_trusted_keyring(void) +{ + return system_trusted_keyring; +} +#else +static inline struct key *get_system_trusted_keyring(void) +{ + return NULL; +} #endif #endif /* _KEYS_SYSTEM_KEYRING_H */ -- cgit v1.2.3 From 32c4741cb66703a3c282f41d77deff4afd93342a Mon Sep 17 00:00:00 2001 From: Dmitry Kasatkin Date: Tue, 17 Jun 2014 11:56:59 +0300 Subject: KEYS: validate certificate trust only with builtin keys Instead of allowing public keys, with certificates signed by any key on the system trusted keyring, to be added to a trusted keyring, this patch further restricts the certificates to those signed only by builtin keys on the system keyring. This patch defines a new option 'builtin' for the kernel parameter 'keys_ownerid' to allow trust validation using builtin keys. Simplified Mimi's "KEYS: define an owner trusted keyring" patch Changelog v7: - rename builtin_keys to use_builtin_keys Signed-off-by: Dmitry Kasatkin Signed-off-by: Mimi Zohar --- include/linux/key.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/key.h b/include/linux/key.h index 017b0826642f..65316f7ae794 100644 --- a/include/linux/key.h +++ b/include/linux/key.h @@ -170,6 +170,7 @@ struct key { #define KEY_FLAG_INVALIDATED 7 /* set if key has been invalidated */ #define KEY_FLAG_TRUSTED 8 /* set if key is trusted */ #define KEY_FLAG_TRUSTED_ONLY 9 /* set if keyring only accepts links to trusted keys */ +#define KEY_FLAG_BUILTIN 10 /* set if key is builtin */ /* the key type and key description string * - the desc is used to match a key against search criteria -- cgit v1.2.3 From 0c7774abb41bd00d5836d9ba098825a40fa94133 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 17 Jul 2014 20:45:08 +0100 Subject: KEYS: Allow special keys (eg. DNS results) to be invalidated by CAP_SYS_ADMIN Special kernel keys, such as those used to hold DNS results for AFS, CIFS and NFS and those used to hold idmapper results for NFS, used to be 'invalidateable' with key_revoke(). However, since the default permissions for keys were reduced: Commit: 96b5c8fea6c0861621051290d705ec2e971963f1 KEYS: Reduce initial permissions on keys it has become impossible to do this. Add a key flag (KEY_FLAG_ROOT_CAN_INVAL) that will permit a key to be invalidated by root. This should not be used for system keyrings as the garbage collector will try and remove any invalidate key. For system keyrings, KEY_FLAG_ROOT_CAN_CLEAR can be used instead. After this, from userspace, keyctl_invalidate() and "keyctl invalidate" can be used by any possessor of CAP_SYS_ADMIN (typically root) to invalidate DNS and idmapper keys. Invalidated keys are immediately garbage collected and will be immediately rerequested if needed again. Signed-off-by: David Howells Tested-by: Steve Dickson --- include/linux/key.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/key.h b/include/linux/key.h index 017b0826642f..e37a4d807185 100644 --- a/include/linux/key.h +++ b/include/linux/key.h @@ -170,6 +170,7 @@ struct key { #define KEY_FLAG_INVALIDATED 7 /* set if key has been invalidated */ #define KEY_FLAG_TRUSTED 8 /* set if key is trusted */ #define KEY_FLAG_TRUSTED_ONLY 9 /* set if keyring only accepts links to trusted keys */ +#define KEY_FLAG_ROOT_CAN_INVAL 11 /* set if key can be invalidated by root without permission */ /* the key type and key description string * - the desc is used to match a key against search criteria -- cgit v1.2.3 From 6a09d17bb66a533c165be81e8a4c3557f68e1a3b Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 18 Jul 2014 18:56:34 +0100 Subject: KEYS: Provide a generic instantiation function Provide a generic instantiation function for key types that use the preparse hook. This makes it easier to prereserve key quota before keyrings get locked to retain the new key. Signed-off-by: David Howells Acked-by: Steve Dickson Acked-by: Jeff Layton Reviewed-by: Sage Weil --- include/linux/key-type.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/key-type.h b/include/linux/key-type.h index a74c3a84dfdd..88503dca2a57 100644 --- a/include/linux/key-type.h +++ b/include/linux/key-type.h @@ -159,5 +159,7 @@ static inline int key_negate_and_link(struct key *key, return key_reject_and_link(key, timeout, ENOKEY, keyring, instkey); } +extern int generic_key_instantiate(struct key *key, struct key_preparsed_payload *prep); + #endif /* CONFIG_KEYS */ #endif /* _LINUX_KEY_TYPE_H */ -- cgit v1.2.3 From fc7c70e0b6b637bbf6cf8b9cee547d5ae83899c9 Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 18 Jul 2014 18:56:34 +0100 Subject: KEYS: struct key_preparsed_payload should have two payload pointers struct key_preparsed_payload should have two payload pointers to correspond with those in struct key. Signed-off-by: David Howells Acked-by: Steve Dickson Acked-by: Jeff Layton Reviewed-by: Sage Weil --- include/linux/key-type.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/key-type.h b/include/linux/key-type.h index 88503dca2a57..d2b4845d74bf 100644 --- a/include/linux/key-type.h +++ b/include/linux/key-type.h @@ -41,7 +41,7 @@ struct key_construction { struct key_preparsed_payload { char *description; /* Proposed key description (or NULL) */ void *type_data[2]; /* Private key-type data */ - void *payload; /* Proposed payload */ + void *payload[2]; /* Proposed payload */ const void *data; /* Raw data */ size_t datalen; /* Raw datalen */ size_t quotalen; /* Quota length for proposed payload */ -- cgit v1.2.3 From 7dfa0ca6a95de65b7a7760630cdbd7d30f204bfa Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 18 Jul 2014 18:56:34 +0100 Subject: KEYS: Allow expiry time to be set when preparsing a key Allow a key type's preparsing routine to set the expiry time for a key. Signed-off-by: David Howells Acked-by: Steve Dickson Acked-by: Jeff Layton Reviewed-by: Sage Weil --- include/linux/key-type.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/key-type.h b/include/linux/key-type.h index d2b4845d74bf..44792ee649de 100644 --- a/include/linux/key-type.h +++ b/include/linux/key-type.h @@ -45,6 +45,7 @@ struct key_preparsed_payload { const void *data; /* Raw data */ size_t datalen; /* Raw datalen */ size_t quotalen; /* Quota length for proposed payload */ + time_t expiry; /* Expiry time of key */ bool trusted; /* True if key is trusted */ }; -- cgit v1.2.3 From f9167789df53f22af771fb6690a3d36aa21d74c5 Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 18 Jul 2014 18:56:35 +0100 Subject: KEYS: user: Use key preparsing Make use of key preparsing in user-defined and logon keys so that quota size determination can take place prior to keyring locking when a key is being added. Also the idmapper key types need to change to match as they use the user-defined key type routines. Signed-off-by: David Howells Acked-by: Steve Dickson Acked-by: Jeff Layton --- include/keys/user-type.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/keys/user-type.h b/include/keys/user-type.h index 5e452c84f1e6..3ab1873a4bfa 100644 --- a/include/keys/user-type.h +++ b/include/keys/user-type.h @@ -37,7 +37,8 @@ extern struct key_type key_type_logon; struct key_preparsed_payload; -extern int user_instantiate(struct key *key, struct key_preparsed_payload *prep); +extern int user_preparse(struct key_preparsed_payload *prep); +extern void user_free_preparse(struct key_preparsed_payload *prep); extern int user_update(struct key *key, struct key_preparsed_payload *prep); extern int user_match(const struct key *key, const void *criterion); extern void user_revoke(struct key *key); -- cgit v1.2.3 From 002edaf76f09af658241029817f5ef66f6bef5e4 Mon Sep 17 00:00:00 2001 From: David Howells Date: Fri, 18 Jul 2014 18:56:36 +0100 Subject: KEYS: big_key: Use key preparsing Make use of key preparsing in the big key type so that quota size determination can take place prior to keyring locking when a key is being added. Signed-off-by: David Howells Acked-by: Steve Dickson --- include/keys/big_key-type.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/keys/big_key-type.h b/include/keys/big_key-type.h index d69bc8af3292..e0970a578188 100644 --- a/include/keys/big_key-type.h +++ b/include/keys/big_key-type.h @@ -16,7 +16,8 @@ extern struct key_type key_type_big_key; -extern int big_key_instantiate(struct key *key, struct key_preparsed_payload *prep); +extern int big_key_preparse(struct key_preparsed_payload *prep); +extern void big_key_free_preparse(struct key_preparsed_payload *prep); extern void big_key_revoke(struct key *key); extern void big_key_destroy(struct key *key); extern void big_key_describe(const struct key *big_key, struct seq_file *m); -- cgit v1.2.3