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Fix leak & invalid behavior of opj_jp2_read_ihdr #818

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merged 1 commit into from
Sep 5, 2016
Merged

Fix leak & invalid behavior of opj_jp2_read_ihdr #818

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14 changes: 11 additions & 3 deletions src/lib/openjp2/jp2.c
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Original file line number Diff line number Diff line change
Expand Up @@ -552,6 +552,11 @@ static OPJ_BOOL opj_jp2_read_ihdr( opj_jp2_t *jp2,
assert(jp2 != 00);
assert(p_manager != 00);

if (jp2->comps != NULL) {
opj_event_msg(p_manager, EVT_WARNING, "Ignoring ihdr box. First ihdr box already read\n");
return OPJ_TRUE;
}

if (p_image_header_size != 14) {
opj_event_msg(p_manager, EVT_ERROR, "Bad image header box (bad size)\n");
return OPJ_FALSE;
Expand All @@ -563,6 +568,11 @@ static OPJ_BOOL opj_jp2_read_ihdr( opj_jp2_t *jp2,
p_image_header_data += 4;
opj_read_bytes(p_image_header_data,&(jp2->numcomps),2); /* NC */
p_image_header_data += 2;

if ((jp2->numcomps - 1U) >= 16384U) { /* unsigned underflow is well defined: 1U <= jp2->numcomps <= 16384U */
opj_event_msg(p_manager, EVT_ERROR, "Invalid number of components (ihdr)\n");
return OPJ_FALSE;
}

/* allocate memory for components */
jp2->comps = (opj_jp2_comps_t*) opj_calloc(jp2->numcomps, sizeof(opj_jp2_comps_t));
Expand Down Expand Up @@ -1764,7 +1774,7 @@ void opj_jp2_setup_decoder(opj_jp2_t *jp2, opj_dparameters_t *parameters)

/* further JP2 initializations go here */
jp2->color.jp2_has_colr = 0;
jp2->ignore_pclr_cmap_cdef = parameters->flags & OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG;
jp2->ignore_pclr_cmap_cdef = parameters->flags & OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG;
}

/* ----------------------------------------------------------------------- */
Expand Down Expand Up @@ -1810,7 +1820,6 @@ OPJ_BOOL opj_jp2_setup_encoder( opj_jp2_t *jp2,
jp2->numcl = 1;
jp2->cl = (OPJ_UINT32*) opj_malloc(jp2->numcl * sizeof(OPJ_UINT32));
if (!jp2->cl){
jp2->cl = NULL;
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory when setup the JP2 encoder\n");
return OPJ_FALSE;
}
Expand All @@ -1821,7 +1830,6 @@ OPJ_BOOL opj_jp2_setup_encoder( opj_jp2_t *jp2,
jp2->numcomps = image->numcomps; /* NC */
jp2->comps = (opj_jp2_comps_t*) opj_malloc(jp2->numcomps * sizeof(opj_jp2_comps_t));
if (!jp2->comps) {
jp2->comps = NULL;
opj_event_msg(p_manager, EVT_ERROR, "Not enough memory when setup the JP2 encoder\n");
/* Memory of jp2->cl will be freed by opj_jp2_destroy */
return OPJ_FALSE;
Expand Down