diff options
author | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:21:41 -0700 |
---|---|---|
committer | Ashlee Young <ashlee@onosfw.com> | 2015-09-09 22:21:41 -0700 |
commit | 8879b125d26e8db1a5633de5a9c692eb2d1c4f83 (patch) | |
tree | c7259d85a991b83dfa85ab2e339360669fc1f58e /framework/src/suricata/src/detect-ssl-state.c | |
parent | 13d05bc8458758ee39cb829098241e89616717ee (diff) |
suricata checkin based on commit id a4bce14770beee46a537eda3c3f6e8e8565d5d0a
Change-Id: I9a214fa0ee95e58fc640e50bd604dac7f42db48f
Diffstat (limited to 'framework/src/suricata/src/detect-ssl-state.c')
-rw-r--r-- | framework/src/suricata/src/detect-ssl-state.c | 913 |
1 files changed, 913 insertions, 0 deletions
diff --git a/framework/src/suricata/src/detect-ssl-state.c b/framework/src/suricata/src/detect-ssl-state.c new file mode 100644 index 00000000..fa296631 --- /dev/null +++ b/framework/src/suricata/src/detect-ssl-state.c @@ -0,0 +1,913 @@ +/* Copyright (C) 2007-2010 Open Information Security Foundation + * + * You can copy, redistribute or modify this Program under the terms of + * the GNU General Public License version 2 as published by the Free + * Software Foundation. + * + * 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 + * version 2 along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +/** + * \file + * + * \author Anoop Saldanha <anoopsaldanha@gmail.com> + * + * Implements support for ssl_state keyword. + */ + +#include "suricata-common.h" +#include "threads.h" +#include "debug.h" +#include "decode.h" + +#include "detect.h" +#include "detect-parse.h" + +#include "detect-engine.h" +#include "detect-engine-mpm.h" +#include "detect-engine-state.h" + +#include "flow.h" +#include "flow-var.h" +#include "flow-util.h" + +#include "util-debug.h" +#include "util-unittest.h" +#include "util-unittest-helper.h" + +#include "app-layer.h" +#include "app-layer-parser.h" + +#include "detect-ssl-state.h" + +#include "stream-tcp.h" +#include "app-layer-ssl.h" + +#define PARSE_REGEX1 "^\\s*([_a-zA-Z0-9]+)(.*)$" +static pcre *parse_regex1; +static pcre_extra *parse_regex1_study; + +#define PARSE_REGEX2 "^(?:\\s*[|]\\s*([_a-zA-Z0-9]+))(.*)$" +static pcre *parse_regex2; +static pcre_extra *parse_regex2_study; + +int DetectSslStateMatch(ThreadVars *, DetectEngineThreadCtx *, Flow *, + uint8_t, void *, Signature *, SigMatch *); +int DetectSslStateSetup(DetectEngineCtx *, Signature *, char *); +void DetectSslStateRegisterTests(void); +void DetectSslStateFree(void *); + +/** + * \brief Registers the keyword handlers for the "ssl_state" keyword. + */ +void DetectSslStateRegister(void) +{ + sigmatch_table[DETECT_AL_SSL_STATE].name = "ssl_state"; + sigmatch_table[DETECT_AL_SSL_STATE].Match = NULL; + sigmatch_table[DETECT_AL_SSL_STATE].AppLayerMatch = DetectSslStateMatch; + sigmatch_table[DETECT_AL_SSL_STATE].alproto = ALPROTO_TLS; + sigmatch_table[DETECT_AL_SSL_STATE].Setup = DetectSslStateSetup; + sigmatch_table[DETECT_AL_SSL_STATE].Free = DetectSslStateFree; + sigmatch_table[DETECT_AL_SSL_STATE].RegisterTests = DetectSslStateRegisterTests; + + const char *eb; + int eo; + int opts = 0; + + SCLogDebug("registering ssl_state rule option"); + + /* PARSE_REGEX1 */ + parse_regex1 = pcre_compile(PARSE_REGEX1, opts, &eb, &eo, NULL); + if (parse_regex1 == NULL) { + SCLogError(SC_ERR_PCRE_COMPILE, "Compile of \"%s\" failed at offset %" PRId32 ": %s", + PARSE_REGEX1, eo, eb); + goto error; + } + + parse_regex1_study = pcre_study(parse_regex1, 0, &eb); + if (eb != NULL) { + SCLogError(SC_ERR_PCRE_STUDY, "pcre study failed: %s", eb); + goto error; + } + + /* PARSE_REGEX2 */ + parse_regex2 = pcre_compile(PARSE_REGEX2, opts, &eb, &eo, NULL); + if (parse_regex2 == NULL) { + SCLogError(SC_ERR_PCRE_COMPILE, "Compile of \"%s\" failed at offset %" PRId32 ": %s", + PARSE_REGEX2, eo, eb); + goto error; + } + + parse_regex2_study = pcre_study(parse_regex2, 0, &eb); + if (eb != NULL) { + SCLogError(SC_ERR_PCRE_STUDY, "pcre study failed: %s", eb); + goto error; + } + +error: + return; +} + +/** + * \brief App layer match function ssl_state keyword. + * + * \param tv Pointer to threadvars. + * \param det_ctx Pointer to the thread's detection context. + * \param f Pointer to the flow. + * \param flags Flags. + * \param state App layer state. + * \param s Sig we are currently inspecting. + * \param m SigMatch we are currently inspecting. + * + * \retval 1 Match. + * \retval 0 No match. + */ +int DetectSslStateMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx, + Flow *f, uint8_t flags, void *alstate, Signature *s, + SigMatch *m) +{ + int result = 1; + DetectSslStateData *ssd = (DetectSslStateData *)m->ctx; + SSLState *ssl_state = (SSLState *)alstate; + if (ssl_state == NULL) { + SCLogDebug("no app state, no match"); + return 0; + } + + if ((ssd->flags & SSL_AL_FLAG_STATE_CLIENT_HELLO) && + !(ssl_state->flags & SSL_AL_FLAG_STATE_CLIENT_HELLO)) { + result = 0; + goto end; + } + if ((ssd->flags & SSL_AL_FLAG_STATE_SERVER_HELLO) && + !(ssl_state->flags & SSL_AL_FLAG_STATE_SERVER_HELLO)) { + result = 0; + goto end; + } + if ((ssd->flags & SSL_AL_FLAG_STATE_CLIENT_KEYX) && + !(ssl_state->flags & SSL_AL_FLAG_STATE_CLIENT_KEYX)) { + result = 0; + goto end; + } + if ((ssd->flags & SSL_AL_FLAG_STATE_SERVER_KEYX) && + !(ssl_state->flags & SSL_AL_FLAG_STATE_SERVER_KEYX)) { + result = 0; + goto end; + } + + end: + return result; +} + +/** + * \brief Parse the arg supplied with ssl_state and return it in a + * DetectSslStateData instance. + * + * \param arg Pointer to the string to be parsed. + * + * \retval ssd Pointer to DetectSslStateData on succese. + * \retval NULL On failure. + */ +DetectSslStateData *DetectSslStateParse(char *arg) +{ +#define MAX_SUBSTRINGS 30 + int ret = 0, res = 0; + int ov1[MAX_SUBSTRINGS]; + int ov2[MAX_SUBSTRINGS]; + const char *str1; + const char *str2; + uint32_t flags = 0; + DetectSslStateData *ssd = NULL; + + ret = pcre_exec(parse_regex1, parse_regex1_study, arg, strlen(arg), 0, 0, + ov1, MAX_SUBSTRINGS); + if (ret < 1) { + SCLogError(SC_ERR_INVALID_SIGNATURE, "Invalid arg \"%s\" supplied to " + "ssl_state keyword.", arg); + goto error; + } + res = pcre_get_substring((char *)arg, ov1, MAX_SUBSTRINGS, 1, &str1); + if (res < 0) { + SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed"); + goto error; + } + + if (strcmp("client_hello", str1) == 0) { + flags |= DETECT_SSL_STATE_CLIENT_HELLO; + } else if (strcmp("server_hello", str1) == 0) { + flags |= DETECT_SSL_STATE_SERVER_HELLO; + } else if (strcmp("client_keyx", str1) == 0) { + flags |= DETECT_SSL_STATE_CLIENT_KEYX; + } else if (strcmp("server_keyx", str1) == 0) { + flags |= DETECT_SSL_STATE_SERVER_KEYX; + } else if (strcmp("unknown", str1) == 0) { + flags |= DETECT_SSL_STATE_UNKNOWN; + } else { + SCLogError(SC_ERR_INVALID_SIGNATURE, "Found invalid option \"%s\" " + "in ssl_state keyword.", str1); + goto error; + } + + pcre_free_substring(str1); + + res = pcre_get_substring((char *)arg, ov1, MAX_SUBSTRINGS, 2, &str1); + if (res < 0) { + SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed"); + goto error; + } + while (res > 0) { + ret = pcre_exec(parse_regex2, parse_regex2_study, str1, strlen(str1), 0, 0, + ov2, MAX_SUBSTRINGS); + if (ret < 1) { + SCLogError(SC_ERR_INVALID_SIGNATURE, "Invalid arg \"%s\" supplied to " + "ssl_state keyword.", arg); + goto error; + } + res = pcre_get_substring((char *)str1, ov2, MAX_SUBSTRINGS, 1, &str2); + if (res <= 0) { + SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed"); + goto error; + } + if (strcmp("client_hello", str2) == 0) { + flags |= DETECT_SSL_STATE_CLIENT_HELLO; + } else if (strcmp("server_hello", str2) == 0) { + flags |= DETECT_SSL_STATE_SERVER_HELLO; + } else if (strcmp("client_keyx", str2) == 0) { + flags |= DETECT_SSL_STATE_CLIENT_KEYX; + } else if (strcmp("server_keyx", str2) == 0) { + flags |= DETECT_SSL_STATE_SERVER_KEYX; + } else if (strcmp("unknown", str2) == 0) { + flags |= DETECT_SSL_STATE_UNKNOWN; + } else { + SCLogError(SC_ERR_INVALID_SIGNATURE, "Found invalid option \"%s\" " + "in ssl_state keyword.", str2); + goto error; + } + + res = pcre_get_substring((char *)str1, ov2, MAX_SUBSTRINGS, 2, &str2); + if (res < 0) { + SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_get_substring failed"); + goto error; + } + + pcre_free_substring(str1); + str1 = str2; + } + + if ( (ssd = SCMalloc(sizeof(DetectSslStateData))) == NULL) { + goto error; + } + ssd->flags = flags; + + return ssd; + +error: + if (ssd != NULL) + DetectSslStateFree(ssd); + return NULL; +} + + /** + * \internal + * \brief Setup function for ssl_state keyword. + * + * \param de_ctx Pointer to the Detection Engine Context. + * \param s Pointer to the Current Signature + * \param arg String holding the arg. + * + * \retval 0 On success. + * \retval -1 On failure. + */ +int DetectSslStateSetup(DetectEngineCtx *de_ctx, Signature *s, char *arg) +{ + DetectSslStateData *ssd = NULL; + SigMatch *sm = NULL; + + ssd = DetectSslStateParse(arg); + if (ssd == NULL) + goto error; + + sm = SigMatchAlloc(); + if (sm == NULL) + goto error; + + sm->type = DETECT_AL_SSL_STATE; + sm->ctx = (SigMatchCtx*)ssd; + + if (s->alproto != ALPROTO_UNKNOWN && s->alproto != ALPROTO_TLS) { + SCLogError(SC_ERR_CONFLICTING_RULE_KEYWORDS, + "Rule contains conflicting keywords. Have non-tls alproto " + "set for a rule containing \"ssl_state\" keyword"); + goto error; + } + s->alproto = ALPROTO_TLS; + + SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_AMATCH); + + return 0; + +error: + if (ssd != NULL) + DetectSslStateFree(ssd); + if (sm != NULL) + SCFree(sm); + return -1; +} + +/** + * \brief Free memory associated with DetectSslStateData. + * + * \param ptr pointer to the data to be freed. + */ +void DetectSslStateFree(void *ptr) +{ + if (ptr != NULL) + SCFree(ptr); + + return; +} + +/************************************Unittests*********************************/ + +#ifdef UNITTESTS + +int DetectSslStateTest01(void) +{ + DetectSslStateData *ssd = DetectSslStateParse("client_hello"); + if (ssd == NULL) { + printf("ssd == NULL\n"); + return 0; + } + if (ssd->flags == DETECT_SSL_STATE_CLIENT_HELLO) { + SCFree(ssd); + return 1; + } + + return 0; +} + +int DetectSslStateTest02(void) +{ + DetectSslStateData *ssd = DetectSslStateParse("server_hello | client_hello"); + if (ssd == NULL) { + printf("ssd == NULL\n"); + return 0; + } + if (ssd->flags == (DETECT_SSL_STATE_SERVER_HELLO | + DETECT_SSL_STATE_CLIENT_HELLO)) { + SCFree(ssd); + return 1; + } + + return 0; +} + +int DetectSslStateTest03(void) +{ + DetectSslStateData *ssd = DetectSslStateParse("server_hello | client_keyx | " + "client_hello"); + if (ssd == NULL) { + printf("ssd == NULL\n"); + return 0; + } + if (ssd->flags == (DETECT_SSL_STATE_SERVER_HELLO | + DETECT_SSL_STATE_CLIENT_KEYX | + DETECT_SSL_STATE_CLIENT_HELLO)) { + SCFree(ssd); + return 1; + } + + return 0; +} + +int DetectSslStateTest04(void) +{ + DetectSslStateData *ssd = DetectSslStateParse("server_hello | client_keyx | " + "client_hello | server_keyx | " + "unknown"); + if (ssd == NULL) { + printf("ssd == NULL\n"); + return 0; + } + if (ssd->flags == (DETECT_SSL_STATE_SERVER_HELLO | + DETECT_SSL_STATE_CLIENT_KEYX | + DETECT_SSL_STATE_CLIENT_HELLO | + DETECT_SSL_STATE_SERVER_KEYX | + DETECT_SSL_STATE_UNKNOWN)) { + SCFree(ssd); + return 1; + } + + return 0; +} + +int DetectSslStateTest05(void) +{ + DetectSslStateData *ssd = DetectSslStateParse("| server_hello | client_keyx | " + "client_hello | server_keyx | " + "unknown"); + + if (ssd != NULL) { + printf("ssd != NULL - failure\n"); + SCFree(ssd); + return 0; + } + + return 1; +} + +int DetectSslStateTest06(void) +{ + DetectSslStateData *ssd = DetectSslStateParse("server_hello | client_keyx | " + "client_hello | server_keyx | " + "unknown | "); + if (ssd != NULL) { + printf("ssd != NULL - failure\n"); + SCFree(ssd); + return 0; + } + + return 1; +} + +/** + * \test Test a valid dce_iface entry for a bind and bind_ack + */ +static int DetectSslStateTest07(void) +{ + uint8_t chello_buf[] = { + 0x80, 0x67, 0x01, 0x03, 0x00, 0x00, 0x4e, 0x00, + 0x00, 0x00, 0x10, 0x01, 0x00, 0x80, 0x03, 0x00, + 0x80, 0x07, 0x00, 0xc0, 0x06, 0x00, 0x40, 0x02, + 0x00, 0x80, 0x04, 0x00, 0x80, 0x00, 0x00, 0x39, + 0x00, 0x00, 0x38, 0x00, 0x00, 0x35, 0x00, 0x00, + 0x33, 0x00, 0x00, 0x32, 0x00, 0x00, 0x04, 0x00, + 0x00, 0x05, 0x00, 0x00, 0x2f, 0x00, 0x00, 0x16, + 0x00, 0x00, 0x13, 0x00, 0xfe, 0xff, 0x00, 0x00, + 0x0a, 0x00, 0x00, 0x15, 0x00, 0x00, 0x12, 0x00, + 0xfe, 0xfe, 0x00, 0x00, 0x09, 0x00, 0x00, 0x64, + 0x00, 0x00, 0x62, 0x00, 0x00, 0x03, 0x00, 0x00, + 0x06, 0xa8, 0xb8, 0x93, 0xbb, 0x90, 0xe9, 0x2a, + 0xa2, 0x4d, 0x6d, 0xcc, 0x1c, 0xe7, 0x2a, 0x80, + 0x21 + }; + uint32_t chello_buf_len = sizeof(chello_buf); + + uint8_t shello_buf[] = { + 0x16, 0x03, 0x00, 0x00, 0x4a, 0x02, + 0x00, 0x00, 0x46, 0x03, 0x00, 0x44, 0x4c, 0x94, + 0x8f, 0xfe, 0x81, 0xed, 0x93, 0x65, 0x02, 0x88, + 0xa3, 0xf8, 0xeb, 0x63, 0x86, 0x0e, 0x2c, 0xf6, + 0x8d, 0xd0, 0x0f, 0x2c, 0x2a, 0xd6, 0x4f, 0xcd, + 0x2d, 0x3c, 0x16, 0xd7, 0xd6, 0x20, 0xa0, 0xfb, + 0x60, 0x86, 0x3d, 0x1e, 0x76, 0xf3, 0x30, 0xfe, + 0x0b, 0x01, 0xfd, 0x1a, 0x01, 0xed, 0x95, 0xf6, + 0x7b, 0x8e, 0xc0, 0xd4, 0x27, 0xbf, 0xf0, 0x6e, + 0xc7, 0x56, 0xb1, 0x47, 0xce, 0x98, 0x00, 0x35, + 0x00, 0x16, 0x03, 0x00, 0x03, 0x44, 0x0b, 0x00, + 0x03, 0x40, 0x00, 0x03, 0x3d, 0x00, 0x03, 0x3a, + 0x30, 0x82, 0x03, 0x36, 0x30, 0x82, 0x02, 0x9f, + 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x01, 0x01, + 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, + 0xf7, 0x0d, 0x01, 0x01, 0x04, 0x05, 0x00, 0x30, + 0x81, 0xa9, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, + 0x55, 0x04, 0x06, 0x13, 0x02, 0x58, 0x59, 0x31, + 0x15, 0x30, 0x13, 0x06, 0x03, 0x55, 0x04, 0x08, + 0x13, 0x0c, 0x53, 0x6e, 0x61, 0x6b, 0x65, 0x20, + 0x44, 0x65, 0x73, 0x65, 0x72, 0x74, 0x31, 0x13, + 0x30, 0x11, 0x06, 0x03, 0x55, 0x04, 0x07, 0x13, + 0x0a, 0x53, 0x6e, 0x61, 0x6b, 0x65, 0x20, 0x54, + 0x6f, 0x77, 0x6e, 0x31, 0x17, 0x30, 0x15, 0x06, + 0x03, 0x55, 0x04, 0x0a, 0x13, 0x0e, 0x53, 0x6e, + 0x61, 0x6b, 0x65, 0x20, 0x4f, 0x69, 0x6c, 0x2c, + 0x20, 0x4c, 0x74, 0x64, 0x31, 0x1e, 0x30, 0x1c, + 0x06, 0x03, 0x55, 0x04, 0x0b, 0x13, 0x15, 0x43, + 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, 0x61, + 0x74, 0x65, 0x20, 0x41, 0x75, 0x74, 0x68, 0x6f, + 0x72, 0x69, 0x74, 0x79, 0x31, 0x15, 0x30, 0x13, 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+ 0x4f, 0x69, 0x6c, 0x2c, 0x20, 0x4c, 0x74, 0x64, + 0x31, 0x17, 0x30, 0x15, 0x06, 0x03, 0x55, 0x04, + 0x0b, 0x13, 0x0e, 0x57, 0x65, 0x62, 0x73, 0x65, + 0x72, 0x76, 0x65, 0x72, 0x20, 0x54, 0x65, 0x61, + 0x6d, 0x31, 0x19, 0x30, 0x17, 0x06, 0x03, 0x55, + 0x04, 0x03, 0x13, 0x10, 0x77, 0x77, 0x77, 0x2e, + 0x73, 0x6e, 0x61, 0x6b, 0x65, 0x6f, 0x69, 0x6c, + 0x2e, 0x64, 0x6f, 0x6d, 0x31, 0x1f, 0x30, 0x1d, + 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, + 0x01, 0x09, 0x01, 0x16, 0x10, 0x77, 0x77, 0x77, + 0x40, 0x73, 0x6e, 0x61, 0x6b, 0x65, 0x6f, 0x69, + 0x6c, 0x2e, 0x64, 0x6f, 0x6d, 0x30, 0x81, 0x9f, + 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, + 0xf7, 0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, + 0x81, 0x8d, 0x00, 0x30, 0x81, 0x89, 0x02, 0x81, + 0x81, 0x00, 0xa4, 0x6e, 0x53, 0x14, 0x0a, 0xde, + 0x2c, 0xe3, 0x60, 0x55, 0x9a, 0xf2, 0x42, 0xa6, + 0xaf, 0x47, 0x12, 0x2f, 0x17, 0xce, 0xfa, 0xba, + 0xdc, 0x4e, 0x63, 0x56, 0x34, 0xb9, 0xba, 0x73, + 0x4b, 0x78, 0x44, 0x3d, 0xc6, 0x6c, 0x69, 0xa4, + 0x25, 0xb3, 0x61, 0x02, 0x9d, 0x09, 0x04, 0x3f, + 0x72, 0x3d, 0xd8, 0x27, 0xd3, 0xb0, 0x5a, 0x45, + 0x77, 0xb7, 0x36, 0xe4, 0x26, 0x23, 0xcc, 0x12, + 0xb8, 0xae, 0xde, 0xa7, 0xb6, 0x3a, 0x82, 0x3c, + 0x7c, 0x24, 0x59, 0x0a, 0xf8, 0x96, 0x43, 0x8b, + 0xa3, 0x29, 0x36, 0x3f, 0x91, 0x7f, 0x5d, 0xc7, + 0x23, 0x94, 0x29, 0x7f, 0x0a, 0xce, 0x0a, 0xbd, + 0x8d, 0x9b, 0x2f, 0x19, 0x17, 0xaa, 0xd5, 0x8e, + 0xec, 0x66, 0xa2, 0x37, 0xeb, 0x3f, 0x57, 0x53, + 0x3c, 0xf2, 0xaa, 0xbb, 0x79, 0x19, 0x4b, 0x90, + 0x7e, 0xa7, 0xa3, 0x99, 0xfe, 0x84, 0x4c, 0x89, + 0xf0, 0x3d, 0x02, 0x03, 0x01, 0x00, 0x01, 0xa3, + 0x6e, 0x30, 0x6c, 0x30, 0x1b, 0x06, 0x03, 0x55, + 0x1d, 0x11, 0x04, 0x14, 0x30, 0x12, 0x81, 0x10, + 0x77, 0x77, 0x77, 0x40, 0x73, 0x6e, 0x61, 0x6b, + 0x65, 0x6f, 0x69, 0x6c, 0x2e, 0x64, 0x6f, 0x6d, + 0x30, 0x3a, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, + 0x86, 0xf8, 0x42, 0x01, 0x0d, 0x04, 0x2d, 0x16, + 0x2b, 0x6d, 0x6f, 0x64, 0x5f, 0x73, 0x73, 0x6c, + 0x20, 0x67, 0x65, 0x6e, 0x65, 0x72, 0x61, 0x74, + 0x65, 0x64, 0x20, 0x63, 0x75, 0x73, 0x74, 0x6f, + 0x6d, 0x20, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, + 0x20, 0x63, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, + 0x63, 0x61, 0x74, 0x65, 0x30, 0x11, 0x06, 0x09, + 0x60, 0x86, 0x48, 0x01, 0x86, 0xf8, 0x42, 0x01, + 0x01, 0x04, 0x04, 0x03, 0x02, 0x06, 0x40, 0x30, + 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, + 0x0d, 0x01, 0x01, 0x04, 0x05, 0x00, 0x03, 0x81, + 0x81, 0x00, 0xae, 0x79, 0x79, 0x22, 0x90, 0x75, + 0xfd, 0xa6, 0xd5, 0xc4, 0xb8, 0xc4, 0x99, 0x4e, + 0x1c, 0x05, 0x7c, 0x91, 0x59, 0xbe, 0x89, 0x0d, + 0x3d, 0xc6, 0x8c, 0xa3, 0xcf, 0xf6, 0xba, 0x23, + 0xdf, 0xb8, 0xae, 0x44, 0x68, 0x8a, 0x8f, 0xb9, + 0x8b, 0xcb, 0x12, 0xda, 0xe6, 0xa2, 0xca, 0xa5, + 0xa6, 0x55, 0xd9, 0xd2, 0xa1, 0xad, 0xba, 0x9b, + 0x2c, 0x44, 0x95, 0x1d, 0x4a, 0x90, 0x59, 0x7f, + 0x83, 0xae, 0x81, 0x5e, 0x3f, 0x92, 0xe0, 0x14, + 0x41, 0x82, 0x4e, 0x7f, 0x53, 0xfd, 0x10, 0x23, + 0xeb, 0x8a, 0xeb, 0xe9, 0x92, 0xea, 0x61, 0xf2, + 0x8e, 0x19, 0xa1, 0xd3, 0x49, 0xc0, 0x84, 0x34, + 0x1e, 0x2e, 0x6e, 0xf6, 0x98, 0xe2, 0x87, 0x53, + 0xd6, 0x55, 0xd9, 0x1a, 0x8a, 0x92, 0x5c, 0xad, + 0xdc, 0x1e, 0x1c, 0x30, 0xa7, 0x65, 0x9d, 0xc2, + 0x4f, 0x60, 0xd2, 0x6f, 0xdb, 0xe0, 0x9f, 0x9e, + 0xbc, 0x41, 0x16, 0x03, 0x00, 0x00, 0x04, 0x0e, + 0x00, 0x00, 0x00 + }; + uint32_t shello_buf_len = sizeof(shello_buf); + + uint8_t client_change_cipher_spec_buf[] = { + 0x16, 0x03, 0x00, 0x00, 0x84, 0x10, 0x00, 0x00, + 0x80, 0x65, 0x51, 0x2d, 0xa6, 0xd4, 0xa7, 0x38, + 0xdf, 0xac, 0x79, 0x1f, 0x0b, 0xd9, 0xb2, 0x61, + 0x7d, 0x73, 0x88, 0x32, 0xd9, 0xf2, 0x62, 0x3a, + 0x8b, 0x11, 0x04, 0x75, 0xca, 0x42, 0xff, 0x4e, + 0xd9, 0xcc, 0xb9, 0xfa, 0x86, 0xf3, 0x16, 0x2f, + 0x09, 0x73, 0x51, 0x66, 0xaa, 0x29, 0xcd, 0x80, + 0x61, 0x0f, 0xe8, 0x13, 0xce, 0x5b, 0x8e, 0x0a, + 0x23, 0xf8, 0x91, 0x5e, 0x5f, 0x54, 0x70, 0x80, + 0x8e, 0x7b, 0x28, 0xef, 0xb6, 0x69, 0xb2, 0x59, + 0x85, 0x74, 0x98, 0xe2, 0x7e, 0xd8, 0xcc, 0x76, + 0x80, 0xe1, 0xb6, 0x45, 0x4d, 0xc7, 0xcd, 0x84, + 0xce, 0xb4, 0x52, 0x79, 0x74, 0xcd, 0xe6, 0xd7, + 0xd1, 0x9c, 0xad, 0xef, 0x63, 0x6c, 0x0f, 0xf7, + 0x05, 0xe4, 0x4d, 0x1a, 0xd3, 0xcb, 0x9c, 0xd2, + 0x51, 0xb5, 0x61, 0xcb, 0xff, 0x7c, 0xee, 0xc7, + 0xbc, 0x5e, 0x15, 0xa3, 0xf2, 0x52, 0x0f, 0xbb, + 0x32, 0x14, 0x03, 0x00, 0x00, 0x01, 0x01, 0x16, + 0x03, 0x00, 0x00, 0x40, 0xa9, 0xd8, 0xd7, 0x35, + 0xbc, 0x39, 0x56, 0x98, 0xad, 0x87, 0x61, 0x2a, + 0xc4, 0x8f, 0xcc, 0x03, 0xcb, 0x93, 0x80, 0x81, + 0xb0, 0x4a, 0xc4, 0xd2, 0x09, 0x71, 0x3e, 0x90, + 0x3c, 0x8d, 0xe0, 0x95, 0x44, 0xfe, 0x56, 0xd1, + 0x7e, 0x88, 0xe2, 0x48, 0xfd, 0x76, 0x70, 0x76, + 0xe2, 0xcd, 0x06, 0xd0, 0xf3, 0x9d, 0x13, 0x79, + 0x67, 0x1e, 0x37, 0xf6, 0x98, 0xbe, 0x59, 0x18, + 0x4c, 0xfc, 0x75, 0x56 + }; + uint32_t client_change_cipher_spec_buf_len = + sizeof(client_change_cipher_spec_buf); + + uint8_t server_change_cipher_spec_buf[] = { + 0x14, 0x03, 0x00, 0x00, 0x01, 0x01, 0x16, 0x03, + 0x00, 0x00, 0x40, 0xce, 0x7c, 0x92, 0x43, 0x59, + 0xcc, 0x3d, 0x90, 0x91, 0x9c, 0x58, 0xf0, 0x7a, + 0xce, 0xae, 0x0d, 0x08, 0xe0, 0x76, 0xb4, 0x86, + 0xb1, 0x15, 0x5b, 0x32, 0xb8, 0x77, 0x53, 0xe7, + 0xa6, 0xf9, 0xd0, 0x95, 0x5f, 0xaa, 0x07, 0xc3, + 0x96, 0x7c, 0xc9, 0x88, 0xc2, 0x7a, 0x20, 0x89, + 0x4f, 0xeb, 0xeb, 0xb6, 0x19, 0xef, 0xaa, 0x27, + 0x73, 0x9d, 0xa6, 0xb4, 0x9f, 0xeb, 0x34, 0xe2, + 0x4d, 0x9f, 0x6b + }; + uint32_t server_change_cipher_spec_buf_len = + sizeof(server_change_cipher_spec_buf); + + uint8_t toserver_app_data_buf[] = { + 0x17, 0x03, 0x00, 0x01, 0xb0, 0x4a, 0xc3, 0x3e, + 0x9d, 0x77, 0x78, 0x01, 0x2c, 0xb4, 0xbc, 0x4c, + 0x9a, 0x84, 0xd7, 0xb9, 0x90, 0x0c, 0x21, 0x10, + 0xf0, 0xfa, 0x00, 0x7c, 0x16, 0xbb, 0x77, 0xfb, + 0x72, 0x42, 0x4f, 0xad, 0x50, 0x4a, 0xd0, 0xaa, + 0x6f, 0xaa, 0x44, 0x6c, 0x62, 0x94, 0x1b, 0xc5, + 0xfe, 0xe9, 0x1c, 0x5e, 0xde, 0x85, 0x0b, 0x0e, + 0x05, 0xe4, 0x18, 0x6e, 0xd2, 0xd3, 0xb5, 0x20, + 0xab, 0x81, 0xfd, 0x18, 0x9a, 0x73, 0xb8, 0xd7, + 0xef, 0xc3, 0xdd, 0x74, 0xd7, 0x9c, 0x1e, 0x6f, + 0x21, 0x6d, 0xf8, 0x24, 0xca, 0x3c, 0x70, 0x78, + 0x36, 0x12, 0x7a, 0x8a, 0x9c, 0xac, 0x4e, 0x1c, + 0xa8, 0xfb, 0x27, 0x30, 0xba, 0x9a, 0xf4, 0x2f, + 0x0a, 0xab, 0x80, 0x6a, 0xa1, 0x60, 0x74, 0xf0, + 0xe3, 0x91, 0x84, 0xe7, 0x90, 0x88, 0xcc, 0xf0, + 0x95, 0x7b, 0x0a, 0x22, 0xf2, 0xf9, 0x27, 0xe0, + 0xdd, 0x38, 0x0c, 0xfd, 0xe9, 0x03, 0x71, 0xdc, + 0x70, 0xa4, 0x6e, 0xdf, 0xe3, 0x72, 0x9e, 0xa1, + 0xf0, 0xc9, 0x00, 0xd6, 0x03, 0x55, 0x6a, 0x67, + 0x5d, 0x9c, 0xb8, 0x75, 0x01, 0xb0, 0x01, 0x9f, + 0xe6, 0xd2, 0x44, 0x18, 0xbc, 0xca, 0x7a, 0x10, + 0x39, 0xa6, 0xcf, 0x15, 0xc7, 0xf5, 0x35, 0xd4, + 0xb3, 0x6d, 0x91, 0x23, 0x84, 0x99, 0xba, 0xb0, + 0x7e, 0xd0, 0xc9, 0x4c, 0xbf, 0x3f, 0x33, 0x68, + 0x37, 0xb7, 0x7d, 0x44, 0xb0, 0x0b, 0x2c, 0x0f, + 0xd0, 0x75, 0xa2, 0x6b, 0x5b, 0xe1, 0x9f, 0xd4, + 0x69, 0x9a, 0x14, 0xc8, 0x29, 0xb7, 0xd9, 0x10, + 0xbb, 0x99, 0x30, 0x9a, 0xfb, 0xcc, 0x13, 0x1f, + 0x76, 0x4e, 0xe6, 0xdf, 0x14, 0xaa, 0xd5, 0x60, + 0xbf, 0x91, 0x49, 0x0d, 0x64, 0x42, 0x29, 0xa8, + 0x64, 0x27, 0xd4, 0x5e, 0x1b, 0x18, 0x03, 0xa8, + 0x73, 0xd6, 0x05, 0x6e, 0xf7, 0x50, 0xb0, 0x09, + 0x6b, 0x69, 0x7a, 0x12, 0x28, 0x58, 0xef, 0x5a, + 0x86, 0x11, 0xde, 0x71, 0x71, 0x9f, 0xca, 0xbd, + 0x79, 0x2a, 0xc2, 0xe5, 0x9b, 0x5e, 0x32, 0xe7, + 0xcb, 0x97, 0x6e, 0xa0, 0xea, 0xa4, 0xa4, 0x6a, + 0x32, 0xf9, 0x37, 0x39, 0xd8, 0x37, 0x6d, 0x63, + 0xf3, 0x08, 0x1c, 0xdd, 0x06, 0xdd, 0x2c, 0x2b, + 0x9f, 0x04, 0x88, 0x5f, 0x36, 0x42, 0xc1, 0xb1, + 0xc7, 0xe8, 0x2d, 0x5d, 0xa4, 0x6c, 0xe5, 0x60, + 0x94, 0xae, 0xd0, 0x90, 0x1e, 0x88, 0xa0, 0x87, + 0x52, 0xfb, 0xed, 0x97, 0xa5, 0x25, 0x5a, 0xb7, + 0x55, 0xc5, 0x13, 0x07, 0x85, 0x27, 0x40, 0xed, + 0xb8, 0xa0, 0x26, 0x13, 0x44, 0x0c, 0xfc, 0xcc, + 0x5a, 0x09, 0xe5, 0x44, 0xb5, 0x63, 0xa1, 0x43, + 0x51, 0x23, 0x4f, 0x17, 0x21, 0x89, 0x2e, 0x58, + 0xfd, 0xf9, 0x63, 0x74, 0x04, 0x70, 0x1e, 0x7d, + 0xd0, 0x66, 0xba, 0x40, 0x5e, 0x45, 0xdc, 0x39, + 0x7c, 0x53, 0x0f, 0xa8, 0x38, 0xb2, 0x13, 0x99, + 0x27, 0xd9, 0x4a, 0x51, 0xe9, 0x9f, 0x2a, 0x92, + 0xbb, 0x9c, 0x90, 0xab, 0xfd, 0xf1, 0xb7, 0x40, + 0x05, 0xa9, 0x7a, 0x20, 0x63, 0x36, 0xc1, 0xef, + 0xb9, 0xad, 0xa2, 0xe0, 0x1d, 0x20, 0x4f, 0xb2, + 0x34, 0xbd, 0xea, 0x07, 0xac, 0x21, 0xce, 0xf6, + 0x8a, 0xa2, 0x9e, 0xcd, 0xfa + }; + uint32_t toserver_app_data_buf_len = sizeof(toserver_app_data_buf); + + int result = 0; + Signature *s = NULL; + ThreadVars th_v; + Packet *p = NULL; + Flow f; + TcpSession ssn; + DetectEngineThreadCtx *det_ctx = NULL; + DetectEngineCtx *de_ctx = NULL; + SSLState *ssl_state = NULL; + int r = 0; + AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc(); + + memset(&th_v, 0, sizeof(th_v)); + memset(&p, 0, sizeof(p)); + memset(&f, 0, sizeof(f)); + memset(&ssn, 0, sizeof(ssn)); + + p = UTHBuildPacket(NULL, 0, IPPROTO_TCP); + + FLOW_INITIALIZE(&f); + f.protoctx = (void *)&ssn; + f.proto = IPPROTO_TCP; + p->flow = &f; + p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST; + p->flowflags |= FLOW_PKT_TOSERVER; + p->flowflags |= FLOW_PKT_ESTABLISHED; + f.alproto = ALPROTO_TLS; + + StreamTcpInitConfig(TRUE); + + de_ctx = DetectEngineCtxInit(); + if (de_ctx == NULL) + goto end; + + de_ctx->flags |= DE_QUIET; + + s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any " + "(msg:\"ssl state\"; ssl_state:client_hello; " + "sid:1;)"); + if (s == NULL) + goto end; + + s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any " + "(msg:\"ssl state\"; " + "ssl_state:client_hello | server_hello; " + "sid:2;)"); + if (s == NULL) + goto end; + + s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any " + "(msg:\"ssl state\"; " + "ssl_state:client_hello | server_hello | " + "client_keyx; sid:3;)"); + if (s == NULL) + goto end; + + s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any " + "(msg:\"ssl state\"; " + "ssl_state:client_hello | server_hello | " + "client_keyx | server_keyx; sid:4;)"); + if (s == NULL) + goto end; + + SigGroupBuild(de_ctx); + DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx); + + SCMutexLock(&f.m); + r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER | STREAM_START, chello_buf, + chello_buf_len); + if (r != 0) { + printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r); + SCMutexUnlock(&f.m); + goto end; + } + SCMutexUnlock(&f.m); + + ssl_state = f.alstate; + if (ssl_state == NULL) { + printf("no ssl state: "); + goto end; + } + + /* do detect */ + p->alerts.cnt = 0; + SigMatchSignatures(&th_v, de_ctx, det_ctx, p); + + if (!PacketAlertCheck(p, 1)) + goto end; + if (PacketAlertCheck(p, 2)) + goto end; + if (PacketAlertCheck(p, 3)) + goto end; + if (PacketAlertCheck(p, 4)) + goto end; + + SCMutexLock(&f.m); + r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOCLIENT, shello_buf, + shello_buf_len); + if (r != 0) { + printf("toclient chunk 1 returned %" PRId32 ", expected 0: ", r); + SCMutexUnlock(&f.m); + goto end; + } + SCMutexUnlock(&f.m); + + /* do detect */ + p->alerts.cnt = 0; + SigMatchSignatures(&th_v, de_ctx, det_ctx, p); + + if (PacketAlertCheck(p, 1)) + goto end; + if (!PacketAlertCheck(p, 2)) + goto end; + if (PacketAlertCheck(p, 3)) + goto end; + if (PacketAlertCheck(p, 4)) + goto end; + + SCMutexLock(&f.m); + r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER, client_change_cipher_spec_buf, + client_change_cipher_spec_buf_len); + if (r != 0) { + printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r); + result = 0; + SCMutexUnlock(&f.m); + goto end; + } + SCMutexUnlock(&f.m); + + /* do detect */ + p->alerts.cnt = 0; + SigMatchSignatures(&th_v, de_ctx, det_ctx, p); + + if (PacketAlertCheck(p, 1)) + goto end; + if (PacketAlertCheck(p, 2)) + goto end; + if (!PacketAlertCheck(p, 3)) + goto end; + if (PacketAlertCheck(p, 4)) + goto end; + + SCMutexLock(&f.m); + r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOCLIENT, server_change_cipher_spec_buf, + server_change_cipher_spec_buf_len); + if (r != 0) { + printf("toclient chunk 1 returned %" PRId32 ", expected 0: ", r); + result = 0; + SCMutexUnlock(&f.m); + goto end; + } + SCMutexUnlock(&f.m); + + /* do detect */ + p->alerts.cnt = 0; + SigMatchSignatures(&th_v, de_ctx, det_ctx, p); + + if (PacketAlertCheck(p, 1)) + goto end; + if (PacketAlertCheck(p, 2)) + goto end; + if (PacketAlertCheck(p, 3)) + goto end; + if (PacketAlertCheck(p, 4)) + goto end; + + SCMutexLock(&f.m); + r = AppLayerParserParse(alp_tctx, &f, ALPROTO_TLS, STREAM_TOSERVER, toserver_app_data_buf, + toserver_app_data_buf_len); + if (r != 0) { + printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r); + result = 0; + SCMutexUnlock(&f.m); + goto end; + } + SCMutexUnlock(&f.m); + + /* do detect */ + p->alerts.cnt = 0; + SigMatchSignatures(&th_v, de_ctx, det_ctx, p); + + if (PacketAlertCheck(p, 1)) + goto end; + if (PacketAlertCheck(p, 2)) + goto end; + if (PacketAlertCheck(p, 3)) + goto end; + if (PacketAlertCheck(p, 4)) + goto end; + + result = 1; + + end: + if (alp_tctx != NULL) + AppLayerParserThreadCtxFree(alp_tctx); + SigGroupCleanup(de_ctx); + SigCleanSignatures(de_ctx); + + DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx); + DetectEngineCtxFree(de_ctx); + + StreamTcpFreeConfig(TRUE); + FLOW_DESTROY(&f); + UTHFreePackets(&p, 1); + return result; +} + +#endif /* UNITTESTS */ + +void DetectSslStateRegisterTests(void) +{ +#ifdef UNITTESTS + UtRegisterTest("DetectSslStateTest01", DetectSslStateTest01, 1); + UtRegisterTest("DetectSslStateTest02", DetectSslStateTest02, 1); + UtRegisterTest("DetectSslStateTest03", DetectSslStateTest03, 1); + UtRegisterTest("DetectSslStateTest04", DetectSslStateTest04, 1); + UtRegisterTest("DetectSslStateTest05", DetectSslStateTest05, 1); + UtRegisterTest("DetectSslStateTest06", DetectSslStateTest06, 1); + UtRegisterTest("DetectSslStateTest07", DetectSslStateTest07, 1); +#endif + + return; +} |