Headline
CVE-2022-3627: Merge branch 'tiffcrop_fix_#411_#413' into 'master' (236b7191) · Commits · libtiff / libtiff · GitLab
LibTIFF 4.4.0 has an out-of-bounds write in _TIFFmemcpy in libtiff/tif_unix.c:346 when called from extractImageSection, tools/tiffcrop.c:6860, allowing attackers to cause a denial-of-service via a crafted tiff file. For users that compile libtiff from sources, the fix is available with commit 236b7191.
…
…
@@ -107,13 +107,15 @@
* selects which functions dump data, with higher numbers selecting
* lower level, scanline level routines. Debug reports a limited set
* of messages to monitor progress without enabling dump logs.
*
* Note: The (-X|-Y), -Z, -z and -S options are mutually exclusive.
*
* Note 1: The (-X|-Y), -Z, -z and -S options are mutually exclusive.
* In no case should the options be applied to a given selection successively.
*/
* Note 2: Any of the -X, -Y, -Z and -z options together with other PAGE_MODE_x options
* such as -H, -V, -P, -J or -K are not supported and may cause buffer overflows.
*/
static char tiffcrop_version_id[] = "2.5.1";
static char tiffcrop_rev_date[] = "15-08-2022";
static char tiffcrop_version_id[] = "2.5.3";
static char tiffcrop_rev_date[] = "26-08-2022";
#include “tif_config.h”
#include “libport.h”
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@@ -781,9 +783,12 @@ static const char usage_info[] =
" The four debug/dump options are independent, though it makes little sense to\n"
" specify a dump file without specifying a detail level.\n"
“\n”
“Note: The (-X|-Y), -Z, -z and -S options are mutually exclusive.\n”
“Note 1: The (-X|-Y), -Z, -z and -S options are mutually exclusive.\n”
" In no case should the options be applied to a given selection successively.\n"
“\n”
“Note 2: Any of the -X, -Y, -Z and -z options together with other PAGE_MODE_x options\n”
" such as - H, -V, -P, -J or -K are not supported and may cause buffer overflows.\n"
“\n”
;
/* This function could be modified to pass starting sample offset
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…
@@ -2138,9 +2143,20 @@ void process_command_opts (int argc, char *argv[], char *mp, char *mode, uint32
R = (crop_data->crop_mode & CROP_REGIONS) ? 1 : 0;
S = (page->mode & PAGE_MODE_ROWSCOLS) ? 1 : 0;
if (XY + Z + R + S > 1) {
TIFFError("tiffcrop input error", “The crop options(-X|-Y), -Z, -z and -S are mutually exclusive.->Exit”);
TIFFError("tiffcrop input error", “The crop options(-X|-Y), -Z, -z and -S are mutually exclusive.->exit”);
exit(EXIT_FAILURE);
}
/* Check for not allowed combination:
* Any of the -X, -Y, -Z and -z options together with other PAGE_MODE_x options
* such as -H, -V, -P, -J or -K are not supported and may cause buffer overflows.
. */
if ((XY + Z + R > 0) && page->mode != PAGE_MODE_NONE) {
TIFFError("tiffcrop input error",
“Any of the crop options -X, -Y, -Z and -z together with other PAGE_MODE_x options such as - H, -V, -P, -J or -K is not supported and may cause buffer overflows…->exit”);
exit(EXIT_FAILURE);
}
} /* end process_command_opts */
/* Start a new output file if one has not been previously opened or
…
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@@ -2411,6 +2427,7 @@ main(int argc, char* argv[])
exit (EXIT_FAILURE);
}
/* Crop input image and copy zones and regions from input image into seg_buffs or crop_buff. */
if (crop.selections > 0)
{
if (processCropSelections(&image, &crop, &read_buff, seg_buffs))
…
…
@@ -2427,6 +2444,7 @@ main(int argc, char* argv[])
exit (EXIT_FAILURE);
}
}
/* Format and write selected image parts to output file(s). */
if (page.mode == PAGE_MODE_NONE)
{ /* Whole image or sections not based on output page size */
if (crop.selections > 0)
…
…
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