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Code Issues Releases Wiki Activity

Fix uninitialized buffer in maskfile iteration

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This commit is contained in:
Jens Steube 2019-08-21 14:57:41 +02:00
parent 63f4358e7e
commit 0063bc7245
2 changed files with 17 additions and 14 deletions
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8
include/types.h
View File

@ -2046,12 +2046,12 @@ typedef struct mask_ctx
{
bool enabled;
cs_t mp_sys[8];
cs_t mp_usr[4];
cs_t *mp_sys;
cs_t *mp_usr;
u64 bfs_cnt;
cs_t css_buf[256];
cs_t *css_buf;
u32 css_cnt;
hcstat_table_t *root_table_buf;
@ -2067,7 +2067,7 @@ typedef struct mask_ctx
u32 masks_cnt;
u32 masks_avail;
char *mask;
char *mask;
mf_t *mfs;

23
src/mpsp.c
View File

@ -364,6 +364,8 @@ static int mp_gen_css (hashcat_ctx_t *hashcat_ctx, char *mask_buf, size_t mask_l
{
const user_options_t *user_options = hashcat_ctx->user_options;
memset (css_buf, 0, 256 * sizeof (cs_t));
size_t mask_pos;
size_t css_pos;
@ -1182,6 +1184,7 @@ int mask_ctx_update_loop (hashcat_ctx_t *hashcat_ctx)
user_options_extra_t *user_options_extra = hashcat_ctx->user_options_extra;
user_options_t *user_options = hashcat_ctx->user_options;
if (user_options_extra->attack_kern == ATTACK_KERN_COMBI)
{
if (user_options->attack_mode == ATTACK_MODE_COMBI)
@ -1196,8 +1199,6 @@ int mask_ctx_update_loop (hashcat_ctx_t *hashcat_ctx)
if (mask_ctx_parse_maskfile (hashcat_ctx) == -1) return -1;
//mask_ctx->css_buf = (cs_t *) hccalloc (256, sizeof (cs_t));
if (mp_gen_css (hashcat_ctx, mask_ctx->mask, strlen (mask_ctx->mask), mask_ctx->mp_sys, mask_ctx->mp_usr, mask_ctx->css_buf, &mask_ctx->css_cnt) == -1) return -1;
u32 uniq_tbls[SP_PW_MAX][CHARSIZ] = { { 0 } };
@ -1221,8 +1222,6 @@ int mask_ctx_update_loop (hashcat_ctx_t *hashcat_ctx)
if (mask_ctx_parse_maskfile (hashcat_ctx) == -1) return -1;
//mask_ctx->css_buf = (cs_t *) hccalloc (256, sizeof (cs_t));
if (mp_gen_css (hashcat_ctx, mask_ctx->mask, strlen (mask_ctx->mask), mask_ctx->mp_sys, mask_ctx->mp_usr, mask_ctx->css_buf, &mask_ctx->css_cnt) == -1) return -1;
u32 uniq_tbls[SP_PW_MAX][CHARSIZ] = { { 0 } };
@ -1252,8 +1251,6 @@ int mask_ctx_update_loop (hashcat_ctx_t *hashcat_ctx)
if (user_options->attack_mode == ATTACK_MODE_BF) // always true
{
//mask_ctx->css_buf = (cs_t *) hccalloc (256, sizeof (cs_t));
if (mp_gen_css (hashcat_ctx, mask_ctx->mask, strlen (mask_ctx->mask), mask_ctx->mp_sys, mask_ctx->mp_usr, mask_ctx->css_buf, &mask_ctx->css_cnt) == -1) return -1;
// special case for benchmark
@ -1372,6 +1369,12 @@ int mask_ctx_init (hashcat_ctx_t *hashcat_ctx)
mask_ctx->enabled = true;
mask_ctx->mp_sys = (cs_t *) hccalloc (8, sizeof (cs_t));
mask_ctx->mp_usr = (cs_t *) hccalloc (4, sizeof (cs_t));
mask_ctx->css_buf = (cs_t *) hccalloc (256, sizeof (cs_t));
mask_ctx->css_cnt = 0;
mask_ctx->root_table_buf = (hcstat_table_t *) hccalloc (SP_ROOT_CNT, sizeof (hcstat_table_t));
mask_ctx->markov_table_buf = (hcstat_table_t *) hccalloc (SP_MARKOV_CNT, sizeof (hcstat_table_t));
@ -1380,9 +1383,6 @@ int mask_ctx_init (hashcat_ctx_t *hashcat_ctx)
mask_ctx->root_css_buf = (cs_t *) hccalloc (SP_PW_MAX, sizeof (cs_t));
mask_ctx->markov_css_buf = (cs_t *) hccalloc (SP_PW_MAX * CHARSIZ, sizeof (cs_t));
mask_ctx->css_cnt = 0;
//mask_ctx->css_buf = NULL;
mask_ctx->mask_from_file = false;
mask_ctx->masks = NULL;
@ -1646,7 +1646,10 @@ void mask_ctx_destroy (hashcat_ctx_t *hashcat_ctx)
if (mask_ctx->enabled == false) return;
//hcfree (mask_ctx->css_buf);
hcfree (mask_ctx->mp_sys);
hcfree (mask_ctx->mp_usr);
hcfree (mask_ctx->css_buf);
hcfree (mask_ctx->root_css_buf);
hcfree (mask_ctx->markov_css_buf);