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Add support for Mojolicious session cookies

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Jakub Kramarz 2024-10-10 18:44:32 +02:00 committed by Jakub Kramarz
parent 6716447dfc
commit 844f2a92d2
2 changed files with 423 additions and 0 deletions
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332
src/modules/module_16501.c Normal file
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/**
* Author......: See docs/credits.txt
* License.....: MIT
*/
#include "common.h"
#include "types.h"
#include "modules.h"
#include "bitops.h"
#include "convert.h"
#include "shared.h"
#include "emu_inc_hash_md5.h"
#include "memory.h"
static const u32 ATTACK_EXEC = ATTACK_EXEC_INSIDE_KERNEL;
static const u32 DGST_POS0 = 0;
static const u32 DGST_POS1 = 1;
static const u32 DGST_POS2 = 2;
static const u32 DGST_POS3 = 3;
static const u32 DGST_SIZE = DGST_SIZE_4_16;
static const u32 HASH_CATEGORY = HASH_CATEGORY_FRAMEWORK;
static const char *HASH_NAME = "Perl Mojolicious session cookie (HMAC-SHA256, >= v9.19)";
// Padded cookie with HMAC-SHA256 signature was introduced in version v9.19 of Mojolicious framework
// It's very like JWT HS256 tokens without a header, so it reuses the kernel.
// For versions pre v9.19, that uses non-padded HMAC-SHA1 signed cookies, use module 150.
static const u64 KERN_TYPE = 16511;
static const u32 OPTI_TYPE = OPTI_TYPE_ZERO_BYTE
| OPTI_TYPE_NOT_ITERATED;
static const u64 OPTS_TYPE = OPTS_TYPE_STOCK_MODULE
| OPTS_TYPE_PT_GENERATE_BE
| OPTS_TYPE_SELF_TEST_DISABLE;
static const u32 SALT_TYPE = SALT_TYPE_EMBEDDED;
static const char *ST_PASS = "secret";
static const char *ST_HASH = "mojolicious=eyIyODY0NTk0MyI6Mzc4NzMyMzJ9ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ--d70a4d495a7eb5764cf7a7db95079bfb23280d33b67aa1589dd4e4f926be1f34";
u32 module_attack_exec (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ATTACK_EXEC; }
u32 module_dgst_pos0 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS0; }
u32 module_dgst_pos1 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS1; }
u32 module_dgst_pos2 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS2; }
u32 module_dgst_pos3 (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_POS3; }
u32 module_dgst_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return DGST_SIZE; }
u32 module_hash_category (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_CATEGORY; }
const char *module_hash_name (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return HASH_NAME; }
u64 module_kern_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return KERN_TYPE; }
u32 module_opti_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTI_TYPE; }
u64 module_opts_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return OPTS_TYPE; }
u32 module_salt_type (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return SALT_TYPE; }
const char *module_st_hash (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_HASH; }
const char *module_st_pass (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra) { return ST_PASS; }
typedef struct mojolicious
{
u32 salt_buf[1024];
u32 salt_len;
u32 signature_len;
} mojolicious_t;
salt_t *module_benchmark_salt (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
salt_t *salt = (salt_t *) hcmalloc (sizeof (salt_t));
salt->salt_iter = 1;
salt->salt_len = 16;
return salt;
}
void *module_benchmark_esalt (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
mojolicious_t *mojolicious = (mojolicious_t *) hcmalloc (sizeof (mojolicious_t));
mojolicious->signature_len = 43;
mojolicious->salt_len = 32;
return mojolicious;
}
u64 module_esalt_size (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const user_options_t *user_options, MAYBE_UNUSED const user_options_extra_t *user_options_extra)
{
const u64 esalt_size = (const u64) sizeof (mojolicious_t);
return esalt_size;
}
u64 module_kern_type_dynamic (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const void *digest_buf, MAYBE_UNUSED const salt_t *salt, MAYBE_UNUSED const void *esalt_buf, MAYBE_UNUSED const void *hook_salt_buf, MAYBE_UNUSED const hashinfo_t *hash_info)
{
return 16511;
}
int module_hash_decode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED void *digest_buf, MAYBE_UNUSED salt_t *salt, MAYBE_UNUSED void *esalt_buf, MAYBE_UNUSED void *hook_salt_buf, MAYBE_UNUSED hashinfo_t *hash_info, const char *line_buf, MAYBE_UNUSED const int line_len)
{
mojolicious_t *mojolicious = (mojolicious_t *) esalt_buf;
hc_token_t token;
memset (&token, 0, sizeof (hc_token_t));
token.token_cnt = 4;
// total = max 4096 characters
// name=value = max 4030 characters
// cookie name
token.sep[0] = '=';
token.len_min[0] = 1;
token.len_max[0] = 3005; // what's left of max cookie length
token.attr[0] = TOKEN_ATTR_VERIFY_LENGTH;
// '=' as separator
// cookie value
token.sep[1] = '-';
token.len_min[1] = 1024; // if there's no padding, it's not new cookie
token.len_max[1] = 4030;
token.attr[1] = TOKEN_ATTR_VERIFY_LENGTH
| TOKEN_ATTR_VERIFY_BASE64A;
// '--' as separator
token.sep[2] = '-';
token.len_min[2] = 0;
token.len_max[2] = 0;
token.attr[2] = TOKEN_ATTR_VERIFY_LENGTH;
// signature = 64 characters
token.sep[3] = '-';
token.len_min[3] = 64;
token.len_max[3] = 64;
token.attr[3] = 0;
const int rc_tokenizer = input_tokenizer ((const u8 *) line_buf, line_len, &token);
if (rc_tokenizer != PARSER_OK) return (rc_tokenizer);
const int name_len = token.len[0];
const int payload_len = token.len[1];
mojolicious->signature_len = token.len[3];
// esalt
const int esalt_len = name_len + 1 + payload_len;
if (esalt_len > 4096) return (PARSER_SALT_LENGTH);
memcpy (mojolicious->salt_buf, line_buf, esalt_len);
mojolicious->salt_len = esalt_len;
// salt
// Create a hash of the esalt because esalt buffer can change somewhere behind salt->salt_buf size
// Not a regular MD5 but good enough
u32 hash[4];
hash[0] = 0;
hash[1] = 1;
hash[2] = 2;
hash[3] = 3;
u32 block[16];
memset (block, 0, sizeof (block));
for (int i = 0; i < 1024; i += 16)
{
for (int j = 0; j < 16; j++)
{
block[j] = mojolicious->salt_buf[i + j];
md5_transform (block + 0, block + 4, block + 8, block + 12, hash);
}
}
salt->salt_buf[0] = hash[0];
salt->salt_buf[1] = hash[1];
salt->salt_buf[2] = hash[2];
salt->salt_buf[3] = hash[3];
salt->salt_len = 16;
const u8 *hash_pos = token.buf[3];
u32 *digest = (u32 *) digest_buf;
digest[0] = hex_to_u32 (hash_pos + 0);
digest[1] = hex_to_u32 (hash_pos + 8);
digest[2] = hex_to_u32 (hash_pos + 16);
digest[3] = hex_to_u32 (hash_pos + 24);
digest[4] = hex_to_u32 (hash_pos + 32);
digest[5] = hex_to_u32 (hash_pos + 40);
digest[6] = hex_to_u32 (hash_pos + 48);
digest[7] = hex_to_u32 (hash_pos + 56);
digest[0] = byte_swap_32 (digest[0]);
digest[1] = byte_swap_32 (digest[1]);
digest[2] = byte_swap_32 (digest[2]);
digest[3] = byte_swap_32 (digest[3]);
digest[4] = byte_swap_32 (digest[4]);
digest[5] = byte_swap_32 (digest[5]);
digest[6] = byte_swap_32 (digest[6]);
digest[7] = byte_swap_32 (digest[7]);
return (PARSER_OK);
}
int module_hash_encode (MAYBE_UNUSED const hashconfig_t *hashconfig, MAYBE_UNUSED const void *digest_buf, MAYBE_UNUSED const salt_t *salt, MAYBE_UNUSED const void *esalt_buf, MAYBE_UNUSED const void *hook_salt_buf, MAYBE_UNUSED const hashinfo_t *hash_info, char *line_buf, MAYBE_UNUSED const int line_size)
{
const mojolicious_t *mojolicious = (const mojolicious_t *) esalt_buf;
const u32 *digest32 = (const u32 *) digest_buf;
char ptr_plain[128];
u32 tmp[8];
tmp[0] = byte_swap_32 (digest32[0]);
tmp[1] = byte_swap_32 (digest32[1]);
tmp[2] = byte_swap_32 (digest32[2]);
tmp[3] = byte_swap_32 (digest32[3]);
tmp[4] = byte_swap_32 (digest32[4]);
tmp[5] = byte_swap_32 (digest32[5]);
tmp[6] = byte_swap_32 (digest32[6]);
tmp[7] = byte_swap_32 (digest32[7]);
u8 *out_buf = (u8 *) ptr_plain;
int out_len = 0;
u32_to_hex (tmp[0], out_buf + out_len); out_len += 8;
u32_to_hex (tmp[1], out_buf + out_len); out_len += 8;
u32_to_hex (tmp[2], out_buf + out_len); out_len += 8;
u32_to_hex (tmp[3], out_buf + out_len); out_len += 8;
u32_to_hex (tmp[4], out_buf + out_len); out_len += 8;
u32_to_hex (tmp[5], out_buf + out_len); out_len += 8;
u32_to_hex (tmp[6], out_buf + out_len); out_len += 8;
u32_to_hex (tmp[7], out_buf + out_len); out_len += 8;
out_buf[65]=0;
const int line_len = snprintf (line_buf, line_size, "%s--%s", (char *) mojolicious->salt_buf, (char *) ptr_plain);
return line_len;
}
void module_init (module_ctx_t *module_ctx)
{
module_ctx->module_context_size = MODULE_CONTEXT_SIZE_CURRENT;
module_ctx->module_interface_version = MODULE_INTERFACE_VERSION_CURRENT;
module_ctx->module_attack_exec = module_attack_exec;
module_ctx->module_benchmark_esalt = module_benchmark_esalt;
module_ctx->module_benchmark_hook_salt = MODULE_DEFAULT;
module_ctx->module_benchmark_mask = MODULE_DEFAULT;
module_ctx->module_benchmark_charset = MODULE_DEFAULT;
module_ctx->module_benchmark_salt = module_benchmark_salt;
module_ctx->module_build_plain_postprocess = MODULE_DEFAULT;
module_ctx->module_deep_comp_kernel = MODULE_DEFAULT;
module_ctx->module_deprecated_notice = MODULE_DEFAULT;
module_ctx->module_dgst_pos0 = module_dgst_pos0;
module_ctx->module_dgst_pos1 = module_dgst_pos1;
module_ctx->module_dgst_pos2 = module_dgst_pos2;
module_ctx->module_dgst_pos3 = module_dgst_pos3;
module_ctx->module_dgst_size = module_dgst_size;
module_ctx->module_dictstat_disable = MODULE_DEFAULT;
module_ctx->module_esalt_size = module_esalt_size;
module_ctx->module_extra_buffer_size = MODULE_DEFAULT;
module_ctx->module_extra_tmp_size = MODULE_DEFAULT;
module_ctx->module_extra_tuningdb_block = MODULE_DEFAULT;
module_ctx->module_forced_outfile_format = MODULE_DEFAULT;
module_ctx->module_hash_binary_count = MODULE_DEFAULT;
module_ctx->module_hash_binary_parse = MODULE_DEFAULT;
module_ctx->module_hash_binary_save = MODULE_DEFAULT;
module_ctx->module_hash_decode_postprocess = MODULE_DEFAULT;
module_ctx->module_hash_decode_potfile = MODULE_DEFAULT;
module_ctx->module_hash_decode_zero_hash = MODULE_DEFAULT;
module_ctx->module_hash_decode = module_hash_decode;
module_ctx->module_hash_encode_status = MODULE_DEFAULT;
module_ctx->module_hash_encode_potfile = MODULE_DEFAULT;
module_ctx->module_hash_encode = module_hash_encode;
module_ctx->module_hash_init_selftest = MODULE_DEFAULT;
module_ctx->module_hash_mode = MODULE_DEFAULT;
module_ctx->module_hash_category = module_hash_category;
module_ctx->module_hash_name = module_hash_name;
module_ctx->module_hashes_count_min = MODULE_DEFAULT;
module_ctx->module_hashes_count_max = MODULE_DEFAULT;
module_ctx->module_hlfmt_disable = MODULE_DEFAULT;
module_ctx->module_hook_extra_param_size = MODULE_DEFAULT;
module_ctx->module_hook_extra_param_init = MODULE_DEFAULT;
module_ctx->module_hook_extra_param_term = MODULE_DEFAULT;
module_ctx->module_hook12 = MODULE_DEFAULT;
module_ctx->module_hook23 = MODULE_DEFAULT;
module_ctx->module_hook_salt_size = MODULE_DEFAULT;
module_ctx->module_hook_size = MODULE_DEFAULT;
module_ctx->module_jit_build_options = MODULE_DEFAULT;
module_ctx->module_jit_cache_disable = MODULE_DEFAULT;
module_ctx->module_kernel_accel_max = MODULE_DEFAULT;
module_ctx->module_kernel_accel_min = MODULE_DEFAULT;
module_ctx->module_kernel_loops_max = MODULE_DEFAULT;
module_ctx->module_kernel_loops_min = MODULE_DEFAULT;
module_ctx->module_kernel_threads_max = MODULE_DEFAULT;
module_ctx->module_kernel_threads_min = MODULE_DEFAULT;
module_ctx->module_kern_type = module_kern_type;
module_ctx->module_kern_type_dynamic = module_kern_type_dynamic;
module_ctx->module_opti_type = module_opti_type;
module_ctx->module_opts_type = module_opts_type;
module_ctx->module_outfile_check_disable = MODULE_DEFAULT;
module_ctx->module_outfile_check_nocomp = MODULE_DEFAULT;
module_ctx->module_potfile_custom_check = MODULE_DEFAULT;
module_ctx->module_potfile_disable = MODULE_DEFAULT;
module_ctx->module_potfile_keep_all_hashes = MODULE_DEFAULT;
module_ctx->module_pwdump_column = MODULE_DEFAULT;
module_ctx->module_pw_max = MODULE_DEFAULT;
module_ctx->module_pw_min = MODULE_DEFAULT;
module_ctx->module_salt_max = MODULE_DEFAULT;
module_ctx->module_salt_min = MODULE_DEFAULT;
module_ctx->module_salt_type = module_salt_type;
module_ctx->module_separator = MODULE_DEFAULT;
module_ctx->module_st_hash = module_st_hash;
module_ctx->module_st_pass = module_st_pass;
module_ctx->module_tmp_size = MODULE_DEFAULT;
module_ctx->module_unstable_warning = MODULE_DEFAULT;
module_ctx->module_warmup_disable = MODULE_DEFAULT;
}

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#!/usr/bin/env perl
##
## Author......: See docs/credits.txt
## License.....: MIT
##
use strict;
use warnings;
use Digest::HMAC qw (hmac);
use MIME::Base64 qw (encode_base64url);
use JSON qw (encode_json);
sub module_constraints { [[0, 64], [-1, -1], [-1, -1], [-1, -1], [-1, -1]] }
sub module_generate_hash
{
my $word = shift;
my $salt = shift || get_random_mojolicious_salt ();
## mojolicious=eyJleHBpcmVzIjoxMTEyNDcwNjIwLCJuZXdfZmxhc2giOnsibWVzc2FnZSI6IkhlbGxvIHRoZXJlLiJ9LCJ1c2VyIjoiYWxpY2UifQ
my ($name, $value) = split('=', $salt);
## example is 102 chars in length, 1025-102 = so it gets 923 chars of "Z" padding, "--" separator and HMAC-SHA256 signature
## mojolicious=eyJleHBpcmVzIjoxMTEyNDcwNjIwLCJuZXdfZmxhc2giOnsibWVzc2FnZSI6IkhlbGxvIHRoZXJlLiJ9LCJ1c2VyIjoiYWxpY2UifQZZZZZZZ(...)ZZZZZZ--1bf346f55562ac2a08d1b86a28e87bf5aad357d7a92e816567271f5b420b93c1
my $hash = get_signed_cookie ($name, $value, $word);
return $hash;
}
sub module_verify_hash
{
my $line = shift;
my ($hash, $word) = split (':', $line);
return unless defined $hash;
return unless defined $word;
my @data = split (/--/, $hash);
return unless scalar @data == 2;
my ($padded_cookie, $signature) = @data;
my $unpadded_cookie = $padded_cookie =~ s/\}\KZ*$//r;
my ($cookie_name, $cookie_value) = split('=', $unpadded_cookie);
my $salt = $cookie_name . "=" . $cookie_value;
my $word_packed = pack_if_HEX_notation ($word);
my $new_hash = module_generate_hash ($word_packed, $salt);
return ($new_hash, $word);
}
sub get_random_mojolicious_salt
{
my $random_key = random_number (1, 100000000);
my $random_val = random_number (1, 100000000);
my $payload =
{
$random_key => $random_val
};
my $payload_json = encode_json ($payload);
my $payload_base64 = encode_base64url ($payload_json, "");
return "mojolicious=$payload_base64";
}
sub get_signed_cookie
{
my ($name, $value, $secret) = @_;
sub add_mojolicious_padding {
return $_[0] . 'Z' x (1025 - length $_[0]);
}
my $padded = add_mojolicious_padding $value;
my $sum = Digest::SHA::hmac_sha256_hex("$name=$padded", $secret);
return "$name=$padded--$sum"
}
1;