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Merge pull request #2096 from matrix/buffer_overflow_1

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Fix buffer overflow in build_plain()
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Jens Steube 2019-07-13 16:33:00 +02:00 committed by GitHub
commit f14f0817ca
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1 changed files with 9 additions and 5 deletions
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14
src/hashes.c
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@ -330,18 +330,22 @@ void check_hash (hashcat_ctx_t *hashcat_ctx, hc_device_param_t *device_param, pl
// plain // plain
u32 plain_buf[64] = { 0 }; u8 plain_buf[256+1];
u8 *plain_ptr = (u8 *) plain_buf; memset (plain_buf, 0, sizeof (plain_buf));
u8 *plain_ptr = plain_buf;
int plain_len = 0; int plain_len = 0;
build_plain (hashcat_ctx, device_param, plain, plain_buf, &plain_len); build_plain (hashcat_ctx, device_param, plain, (u32 *)plain_buf, &plain_len);
if (module_ctx->module_build_plain_postprocess != MODULE_DEFAULT) if (module_ctx->module_build_plain_postprocess != MODULE_DEFAULT)
{ {
u32 temp_buf[64] = { 0 }; u8 temp_buf[256+1] = { 0 };
const int temp_len = module_ctx->module_build_plain_postprocess (hashcat_ctx->hashconfig, hashcat_ctx->hashes, tmps, plain_buf, sizeof (plain_buf), plain_len, temp_buf, sizeof (temp_buf)); memset (temp_buf, 0, sizeof (temp_buf));
const int temp_len = module_ctx->module_build_plain_postprocess (hashcat_ctx->hashconfig, hashcat_ctx->hashes, tmps, (u32 *)plain_buf, sizeof (plain_buf), plain_len, (u32 *)temp_buf, sizeof (temp_buf));
if (temp_len < (int) sizeof (plain_buf)) if (temp_len < (int) sizeof (plain_buf))
{ {