diff options
Diffstat (limited to 'poky/meta/recipes-multimedia/libtiff/files/CVE-2022-0891.patch')
-rw-r--r-- | poky/meta/recipes-multimedia/libtiff/files/CVE-2022-0891.patch | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/poky/meta/recipes-multimedia/libtiff/files/CVE-2022-0891.patch b/poky/meta/recipes-multimedia/libtiff/files/CVE-2022-0891.patch new file mode 100644 index 0000000000..e2f1bd3056 --- /dev/null +++ b/poky/meta/recipes-multimedia/libtiff/files/CVE-2022-0891.patch @@ -0,0 +1,217 @@ +From 232282fd8f9c21eefe8d2d2b96cdbbb172fe7b7c Mon Sep 17 00:00:00 2001 +From: Su Laus <sulau@freenet.de> +Date: Tue, 8 Mar 2022 17:02:44 +0000 +Subject: [PATCH] tiffcrop: fix issue #380 and #382 heap buffer overflow in + extractImageSection + +CVE: CVE-2022-0891 +Upstream-Status: Backport [https://sources.debian.org/src/tiff/4.1.0+git191117-2%7Edeb10u4/debian/patches/CVE-2022-0891.patch/] +Comment: No change in any hunk +Signed-off-by: Sana Kazi <Sana.Kazi@kpit.com> +--- + tools/tiffcrop.c | 92 +++++++++++++++++++----------------------------- + 1 file changed, 36 insertions(+), 56 deletions(-) + +diff --git a/tools/tiffcrop.c b/tools/tiffcrop.c +index f2e5474a..e62bcc71 100644 +--- a/tools/tiffcrop.c ++++ b/tools/tiffcrop.c +@@ -105,8 +105,8 @@ + * of messages to monitor progess without enabling dump logs. + */ + +-static char tiffcrop_version_id[] = "2.4"; +-static char tiffcrop_rev_date[] = "12-13-2010"; ++static char tiffcrop_version_id[] = "2.4.1"; ++static char tiffcrop_rev_date[] = "03-03-2010"; + + #include "tif_config.h" + #include "tiffiop.h" +@@ -6670,10 +6670,10 @@ extractImageSection(struct image_data *image, struct pageseg *section, + #ifdef DEVELMODE + uint32 img_length; + #endif +- uint32 j, shift1, shift2, trailing_bits; ++ uint32 j, shift1, trailing_bits; + uint32 row, first_row, last_row, first_col, last_col; + uint32 src_offset, dst_offset, row_offset, col_offset; +- uint32 offset1, offset2, full_bytes; ++ uint32 offset1, full_bytes; + uint32 sect_width; + #ifdef DEVELMODE + uint32 sect_length; +@@ -6683,7 +6683,6 @@ extractImageSection(struct image_data *image, struct pageseg *section, + #ifdef DEVELMODE + int k; + unsigned char bitset; +- static char *bitarray = NULL; + #endif + + img_width = image->width; +@@ -6701,17 +6700,12 @@ extractImageSection(struct image_data *image, struct pageseg *section, + dst_offset = 0; + + #ifdef DEVELMODE +- if (bitarray == NULL) +- { +- if ((bitarray = (char *)malloc(img_width)) == NULL) +- { +- TIFFError ("", "DEBUG: Unable to allocate debugging bitarray"); +- return (-1); +- } +- } ++ char bitarray[39]; + #endif + +- /* rows, columns, width, length are expressed in pixels */ ++ /* rows, columns, width, length are expressed in pixels ++ * first_row, last_row, .. are index into image array starting at 0 to width-1, ++ * last_col shall be also extracted. */ + first_row = section->y1; + last_row = section->y2; + first_col = section->x1; +@@ -6721,9 +6715,14 @@ extractImageSection(struct image_data *image, struct pageseg *section, + #ifdef DEVELMODE + sect_length = last_row - first_row + 1; + #endif +- img_rowsize = ((img_width * bps + 7) / 8) * spp; +- full_bytes = (sect_width * spp * bps) / 8; /* number of COMPLETE bytes per row in section */ +- trailing_bits = (sect_width * bps) % 8; ++ /* The read function loadImage() used copy separate plane data into a buffer as interleaved ++ * samples rather than separate planes so the same logic works to extract regions ++ * regardless of the way the data are organized in the input file. ++ * Furthermore, bytes and bits are arranged in buffer according to COMPRESSION=1 and FILLORDER=1 ++ */ ++ img_rowsize = (((img_width * spp * bps) + 7) / 8); /* row size in full bytes of source image */ ++ full_bytes = (sect_width * spp * bps) / 8; /* number of COMPLETE bytes per row in section */ ++ trailing_bits = (sect_width * spp * bps) % 8; /* trailing bits within the last byte of destination buffer */ + + #ifdef DEVELMODE + TIFFError ("", "First row: %d, last row: %d, First col: %d, last col: %d\n", +@@ -6736,10 +6735,9 @@ extractImageSection(struct image_data *image, struct pageseg *section, + + if ((bps % 8) == 0) + { +- col_offset = first_col * spp * bps / 8; ++ col_offset = (first_col * spp * bps) / 8; + for (row = first_row; row <= last_row; row++) + { +- /* row_offset = row * img_width * spp * bps / 8; */ + row_offset = row * img_rowsize; + src_offset = row_offset + col_offset; + +@@ -6752,14 +6750,12 @@ extractImageSection(struct image_data *image, struct pageseg *section, + } + else + { /* bps != 8 */ +- shift1 = spp * ((first_col * bps) % 8); +- shift2 = spp * ((last_col * bps) % 8); ++ shift1 = ((first_col * spp * bps) % 8); /* shift1 = bits to skip in the first byte of source buffer*/ + for (row = first_row; row <= last_row; row++) + { + /* pull out the first byte */ + row_offset = row * img_rowsize; +- offset1 = row_offset + (first_col * bps / 8); +- offset2 = row_offset + (last_col * bps / 8); ++ offset1 = row_offset + ((first_col * spp * bps) / 8); /* offset1 = offset into source of byte with first bits to be extracted */ + + #ifdef DEVELMODE + for (j = 0, k = 7; j < 8; j++, k--) +@@ -6771,12 +6767,12 @@ extractImageSection(struct image_data *image, struct pageseg *section, + sprintf(&bitarray[9], " "); + for (j = 10, k = 7; j < 18; j++, k--) + { +- bitset = *(src_buff + offset2) & (((unsigned char)1 << k)) ? 1 : 0; ++ bitset = *(src_buff + offset1 + full_bytes) & (((unsigned char)1 << k)) ? 1 : 0; + sprintf(&bitarray[j], (bitset) ? "1" : "0"); + } + bitarray[18] = '\0'; +- TIFFError ("", "Row: %3d Offset1: %d, Shift1: %d, Offset2: %d, Shift2: %d\n", +- row, offset1, shift1, offset2, shift2); ++ TIFFError ("", "Row: %3d Offset1: %"PRIu32", Shift1: %"PRIu32", Offset2: %"PRIu32", Trailing_bits: %"PRIu32"\n", ++ row, offset1, shift1, offset1+full_bytes, trailing_bits); + #endif + + bytebuff1 = bytebuff2 = 0; +@@ -6800,11 +6796,12 @@ extractImageSection(struct image_data *image, struct pageseg *section, + + if (trailing_bits != 0) + { +- bytebuff2 = src_buff[offset2] & ((unsigned char)255 << (7 - shift2)); ++ /* Only copy higher bits of samples and mask lower bits of not wanted column samples to zero */ ++ bytebuff2 = src_buff[offset1 + full_bytes] & ((unsigned char)255 << (8 - trailing_bits)); + sect_buff[dst_offset] = bytebuff2; + #ifdef DEVELMODE + TIFFError ("", " Trailing bits src offset: %8d, Dst offset: %8d\n", +- offset2, dst_offset); ++ offset1 + full_bytes, dst_offset); + for (j = 30, k = 7; j < 38; j++, k--) + { + bitset = *(sect_buff + dst_offset) & (((unsigned char)1 << k)) ? 1 : 0; +@@ -6823,8 +6820,10 @@ extractImageSection(struct image_data *image, struct pageseg *section, + #endif + for (j = 0; j <= full_bytes; j++) + { +- bytebuff1 = src_buff[offset1 + j] & ((unsigned char)255 >> shift1); +- bytebuff2 = src_buff[offset1 + j + 1] & ((unsigned char)255 << (7 - shift1)); ++ /* Skip the first shift1 bits and shift the source up by shift1 bits before save to destination.*/ ++ /* Attention: src_buff size needs to be some bytes larger than image size, because could read behind image here. */ ++ bytebuff1 = src_buff[offset1 + j] & ((unsigned char)255 >> shift1); ++ bytebuff2 = src_buff[offset1 + j + 1] & ((unsigned char)255 << (8 - shift1)); + sect_buff[dst_offset + j] = (bytebuff1 << shift1) | (bytebuff2 >> (8 - shift1)); + } + #ifdef DEVELMODE +@@ -6840,36 +6839,17 @@ extractImageSection(struct image_data *image, struct pageseg *section, + #endif + dst_offset += full_bytes; + ++ /* Copy the trailing_bits for the last byte in the destination buffer. ++ Could come from one ore two bytes of the source buffer. */ + if (trailing_bits != 0) + { + #ifdef DEVELMODE +- TIFFError ("", " Trailing bits src offset: %8d, Dst offset: %8d\n", offset1 + full_bytes, dst_offset); +-#endif +- if (shift2 > shift1) +- { +- bytebuff1 = src_buff[offset1 + full_bytes] & ((unsigned char)255 << (7 - shift2)); +- bytebuff2 = bytebuff1 & ((unsigned char)255 << shift1); +- sect_buff[dst_offset] = bytebuff2; +-#ifdef DEVELMODE +- TIFFError ("", " Shift2 > Shift1\n"); ++ TIFFError("", " Trailing bits %4"PRIu32" src offset: %8"PRIu32", Dst offset: %8"PRIu32"\n", trailing_bits, offset1 + full_bytes, dst_offset); + #endif ++ /* More than necessary bits are already copied into last destination buffer, ++ * only masking of last byte in destination buffer is necessary.*/ ++ sect_buff[dst_offset] &= ((uint8_t)0xFF << (8 - trailing_bits)); + } +- else +- { +- if (shift2 < shift1) +- { +- bytebuff2 = ((unsigned char)255 << (shift1 - shift2 - 1)); +- sect_buff[dst_offset] &= bytebuff2; +-#ifdef DEVELMODE +- TIFFError ("", " Shift2 < Shift1\n"); +-#endif +- } +-#ifdef DEVELMODE +- else +- TIFFError ("", " Shift2 == Shift1\n"); +-#endif +- } +- } + #ifdef DEVELMODE + sprintf(&bitarray[28], " "); + sprintf(&bitarray[29], " "); +@@ -7022,7 +7002,7 @@ writeImageSections(TIFF *in, TIFF *out, struct image_data *image, + width = sections[i].x2 - sections[i].x1 + 1; + length = sections[i].y2 - sections[i].y1 + 1; + sectsize = (uint32) +- ceil((width * image->bps + 7) / (double)8) * image->spp * length; ++ ceil((width * image->bps * image->spp + 7) / (double)8) * length; + /* allocate a buffer if we don't have one already */ + if (createImageSection(sectsize, sect_buff_ptr)) + { +-- +GitLab |