File security-fixes-820.patch of Package python-Pillow

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File security-fixes-820.patch of Package python-Pillow

Index: Pillow-7.2.0/Tests/test_decompression_bomb.py
===================================================================
--- Pillow-7.2.0.orig/Tests/test_decompression_bomb.py
+++ Pillow-7.2.0/Tests/test_decompression_bomb.py
@@ -51,6 +51,7 @@ class TestDecompressionBomb:
 with Image.open(TEST_FILE):
 pass
 
+ @pytest.mark.xfail(reason="different exception")
 def test_exception_ico(self):
 with pytest.raises(Image.DecompressionBombError):
 Image.open("Tests/images/decompression_bomb.ico")
Index: Pillow-7.2.0/Tests/test_file_apng.py
===================================================================
--- Pillow-7.2.0.orig/Tests/test_file_apng.py
+++ Pillow-7.2.0/Tests/test_file_apng.py
@@ -286,7 +286,7 @@ def test_apng_syntax_errors():
 exception = e
 assert exception is None
 
- with pytest.raises(SyntaxError):
+ with pytest.raises(OSError):
 with Image.open("Tests/images/apng/syntax_num_frames_high.png") as im:
 im.seek(im.n_frames - 1)
 im.load()
Index: Pillow-7.2.0/Tests/test_file_blp.py
===================================================================
--- Pillow-7.2.0.orig/Tests/test_file_blp.py
+++ Pillow-7.2.0/Tests/test_file_blp.py
@@ -1,3 +1,5 @@
+import pytest
+
 from PIL import Image
 
 from .helper import assert_image_equal
@@ -19,3 +21,22 @@ def test_load_blp2_dxt1a():
 with Image.open("Tests/images/blp/blp2_dxt1a.blp") as im:
 with Image.open("Tests/images/blp/blp2_dxt1a.png") as target:
 assert_image_equal(im, target)
+
+
+@pytest.mark.parametrize(
+ "test_file",
+ [
+ "Tests/images/timeout-060745d3f534ad6e4128c51d336ea5489182c69d.blp",
+ "Tests/images/timeout-31c8f86233ea728339c6e586be7af661a09b5b98.blp",
+ "Tests/images/timeout-60d8b7c8469d59fc9ffff6b3a3dc0faeae6ea8ee.blp",
+ "Tests/images/timeout-8073b430977660cdd48d96f6406ddfd4114e69c7.blp",
+ "Tests/images/timeout-bba4f2e026b5786529370e5dfe9a11b1bf991f07.blp",
+ "Tests/images/timeout-d6ec061c4afdef39d3edf6da8927240bb07fe9b7.blp",
+ "Tests/images/timeout-ef9112a065e7183fa7faa2e18929b03e44ee16bf.blp",
+ ],
+)
+def test_crashes(test_file):
+ with open(test_file, "rb") as f:
+ with Image.open(f) as im:
+ with pytest.raises(OSError):
+ im.load()
Index: Pillow-7.2.0/Tests/test_file_eps.py
===================================================================
--- Pillow-7.2.0.orig/Tests/test_file_eps.py
+++ Pillow-7.2.0/Tests/test_file_eps.py
@@ -256,3 +256,15 @@ def test_emptyline():
 assert image.mode == "RGB"
 assert image.size == (460, 352)
 assert image.format == "EPS"
+
+
+@pytest.mark.timeout(timeout=5)
+@pytest.mark.parametrize(
+ "test_file",
+ ["Tests/images/timeout-d675703545fee17acab56e5fec644c19979175de.eps"],
+)
+def test_timeout(test_file):
+ with open(test_file, "rb") as f:
+ with pytest.raises(Image.UnidentifiedImageError):
+ with Image.open(f):
+ pass
Index: Pillow-7.2.0/Tests/test_file_jpeg2k.py
===================================================================
--- Pillow-7.2.0.orig/Tests/test_file_jpeg2k.py
+++ Pillow-7.2.0/Tests/test_file_jpeg2k.py
@@ -233,3 +233,19 @@ def test_parser_feed():
 
 # Assert
 assert p.image.size == (640, 480)
+
+
+@pytest.mark.parametrize(
+ "test_file",
+ [
+ "Tests/images/crash-4fb027452e6988530aa5dabee76eecacb3b79f8a.j2k",
+ "Tests/images/crash-7d4c83eb92150fb8f1653a697703ae06ae7c4998.j2k",
+ "Tests/images/crash-ccca68ff40171fdae983d924e127a721cab2bd50.j2k",
+ "Tests/images/crash-d2c93af851d3ab9a19e34503626368b2ecde9c03.j2k",
+ ],
+)
+def test_crashes(test_file):
+ with open(test_file, "rb") as f:
+ with Image.open(f) as im:
+ # Valgrind should not complain here
+ im.load()
Index: Pillow-7.2.0/src/PIL/BlpImagePlugin.py
===================================================================
--- Pillow-7.2.0.orig/src/PIL/BlpImagePlugin.py
+++ Pillow-7.2.0/src/PIL/BlpImagePlugin.py
@@ -286,33 +286,36 @@ class _BLPBaseDecoder(ImageFile.PyDecode
 raise OSError("Truncated Blp file") from e
 return 0, 0
 
+ def _safe_read(self, length):
+ return ImageFile._safe_read(self.fd, length)
+
 def _read_palette(self):
 ret = []
 for i in range(256):
 try:
- b, g, r, a = struct.unpack("<4B", self.fd.read(4))
+ b, g, r, a = struct.unpack("<4B", self._safe_read(4))
 except struct.error:
 break
 ret.append((b, g, r, a))
 return ret
 
 def _read_blp_header(self):
- (self._blp_compression,) = struct.unpack("<i", self.fd.read(4))
+ (self._blp_compression,) = struct.unpack("<i", self._safe_read(4))
 
- (self._blp_encoding,) = struct.unpack("<b", self.fd.read(1))
- (self._blp_alpha_depth,) = struct.unpack("<b", self.fd.read(1))
- (self._blp_alpha_encoding,) = struct.unpack("<b", self.fd.read(1))
- (self._blp_mips,) = struct.unpack("<b", self.fd.read(1))
+ (self._blp_encoding,) = struct.unpack("<b", self._safe_read(1))
+ (self._blp_alpha_depth,) = struct.unpack("<b", self._safe_read(1))
+ (self._blp_alpha_encoding,) = struct.unpack("<b", self._safe_read(1))
+ (self._blp_mips,) = struct.unpack("<b", self._safe_read(1))
 
- self.size = struct.unpack("<II", self.fd.read(8))
+ self.size = struct.unpack("<II", self._safe_read(8))
 
 if self.magic == b"BLP1":
 # Only present for BLP1
- (self._blp_encoding,) = struct.unpack("<i", self.fd.read(4))
- (self._blp_subtype,) = struct.unpack("<i", self.fd.read(4))
+ (self._blp_encoding,) = struct.unpack("<i", self._safe_read(4))
+ (self._blp_subtype,) = struct.unpack("<i", self._safe_read(4))
 
- self._blp_offsets = struct.unpack("<16I", self.fd.read(16 * 4))
- self._blp_lengths = struct.unpack("<16I", self.fd.read(16 * 4))
+ self._blp_offsets = struct.unpack("<16I", self._safe_read(16 * 4))
+ self._blp_lengths = struct.unpack("<16I", self._safe_read(16 * 4))
 
 
 class BLP1Decoder(_BLPBaseDecoder):
@@ -324,7 +327,7 @@ class BLP1Decoder(_BLPBaseDecoder):
 if self._blp_encoding in (4, 5):
 data = bytearray()
 palette = self._read_palette()
- _data = BytesIO(self.fd.read(self._blp_lengths[0]))
+ _data = BytesIO(self._safe_read(self._blp_lengths[0]))
 while True:
 try:
 (offset,) = struct.unpack("<B", _data.read(1))
@@ -346,10 +349,10 @@ class BLP1Decoder(_BLPBaseDecoder):
 def _decode_jpeg_stream(self):
 from PIL.JpegImagePlugin import JpegImageFile
 
- (jpeg_header_size,) = struct.unpack("<I", self.fd.read(4))
- jpeg_header = self.fd.read(jpeg_header_size)
- self.fd.read(self._blp_offsets[0] - self.fd.tell()) # What IS this?
- data = self.fd.read(self._blp_lengths[0])
+ (jpeg_header_size,) = struct.unpack("<I", self._safe_read(4))
+ jpeg_header = self._safe_read(jpeg_header_size)
+ self._safe_read(self._blp_offsets[0] - self.fd.tell()) # What IS this?
+ data = self._safe_read(self._blp_lengths[0])
 data = jpeg_header + data
 data = BytesIO(data)
 image = JpegImageFile(data)
@@ -369,7 +372,7 @@ class BLP2Decoder(_BLPBaseDecoder):
 # Uncompressed or DirectX compression
 
 if self._blp_encoding == BLP_ENCODING_UNCOMPRESSED:
- _data = BytesIO(self.fd.read(self._blp_lengths[0]))
+ _data = BytesIO(self._safe_read(self._blp_lengths[0]))
 while True:
 try:
 (offset,) = struct.unpack("<B", _data.read(1))
@@ -383,20 +386,20 @@ class BLP2Decoder(_BLPBaseDecoder):
 linesize = (self.size[0] + 3) // 4 * 8
 for yb in range((self.size[1] + 3) // 4):
 for d in decode_dxt1(
- self.fd.read(linesize), alpha=bool(self._blp_alpha_depth)
+ self._safe_read(linesize), alpha=bool(self._blp_alpha_depth)
 ):
 data += d
 
 elif self._blp_alpha_encoding == BLP_ALPHA_ENCODING_DXT3:
 linesize = (self.size[0] + 3) // 4 * 16
 for yb in range((self.size[1] + 3) // 4):
- for d in decode_dxt3(self.fd.read(linesize)):
+ for d in decode_dxt3(self._safe_read(linesize)):
 data += d
 
 elif self._blp_alpha_encoding == BLP_ALPHA_ENCODING_DXT5:
 linesize = (self.size[0] + 3) // 4 * 16
 for yb in range((self.size[1] + 3) // 4):
- for d in decode_dxt5(self.fd.read(linesize)):
+ for d in decode_dxt5(self._safe_read(linesize)):
 data += d
 else:
 raise BLPFormatError(
Index: Pillow-7.2.0/src/PIL/EpsImagePlugin.py
===================================================================
--- Pillow-7.2.0.orig/src/PIL/EpsImagePlugin.py
+++ Pillow-7.2.0/src/PIL/EpsImagePlugin.py
@@ -170,12 +170,12 @@ class PSFile:
 self.fp.seek(offset, whence)
 
 def readline(self):
- s = self.char or b""
+ s = [self.char or b""]
 self.char = None
 
 c = self.fp.read(1)
- while c not in b"\r\n":
- s = s + c
+ while (c not in b"\r\n") and len(c):
+ s.append(c)
 c = self.fp.read(1)
 
 self.char = self.fp.read(1)
@@ -183,7 +183,7 @@ class PSFile:
 if self.char in b"\r\n":
 self.char = None
 
- return s.decode("latin-1")
+ return b"".join(s).decode("latin-1")
 
 
 def _accept(prefix):
Index: Pillow-7.2.0/src/PIL/ImageFile.py
===================================================================
--- Pillow-7.2.0.orig/src/PIL/ImageFile.py
+++ Pillow-7.2.0/src/PIL/ImageFile.py
@@ -551,12 +551,18 @@ def _safe_read(fp, size):
 
 :param fp: File handle. Must implement a read method.
 :param size: Number of bytes to read.
- :returns: A string containing up to size bytes of data.
+ :returns: A string containing size bytes of data.
+
+ Raises an OSError if the file is truncated and the read cannot be completed
+
 """
 if size <= 0:
 return b""
 if size <= SAFEBLOCK:
- return fp.read(size)
+ data = fp.read(size)
+ if len(data) < size:
+ raise OSError("Truncated File Read")
+ return data
 data = []
 while size > 0:
 block = fp.read(min(size, SAFEBLOCK))
@@ -564,6 +570,8 @@ def _safe_read(fp, size):
 break
 data.append(block)
 size -= len(block)
+ if sum(len(d) for d in data) < size:
+ raise OSError("Truncated File Read")
 return b"".join(data)
 
 
Index: Pillow-7.2.0/src/PIL/ImageFont.py
===================================================================
--- Pillow-7.2.0.orig/src/PIL/ImageFont.py
+++ Pillow-7.2.0/src/PIL/ImageFont.py
@@ -485,6 +485,7 @@ class FreeTypeFont:
 text, mode == "1", direction, features, language
 )
 size = size[0] + stroke_width * 2, size[1] + stroke_width * 2
+ Image._decompression_bomb_check(size)
 im = fill("L", size, 0)
 self.font.render(
 text, im.id, mode == "1", direction, features, language, stroke_width
Index: Pillow-7.2.0/src/PIL/PsdImagePlugin.py
===================================================================
--- Pillow-7.2.0.orig/src/PIL/PsdImagePlugin.py
+++ Pillow-7.2.0/src/PIL/PsdImagePlugin.py
@@ -117,7 +117,8 @@ class PsdImageFile(ImageFile.ImageFile):
 end = self.fp.tell() + size
 size = i32(read(4))
 if size:
- self.layers = _layerinfo(self.fp)
+ _layer_data = io.BytesIO(ImageFile._safe_read(self.fp, size))
+ self.layers = _layerinfo(_layer_data, size)
 self.fp.seek(end)
 self.n_frames = len(self.layers)
 self.is_animated = self.n_frames > 1
@@ -169,11 +170,20 @@ class PsdImageFile(ImageFile.ImageFile):
 self.__fp = None
 
 
-def _layerinfo(file):
+def _layerinfo(fp, ct_bytes):
 # read layerinfo block
 layers = []
- read = file.read
- for i in range(abs(i16(read(2)))):
+
+ def read(size):
+ return ImageFile._safe_read(fp, size)
+
+ ct = i16(read(2))
+
+ # sanity check
+ if ct_bytes < (abs(ct) * 20):
+ raise SyntaxError("Layer block too short for number of layers requested")
+
+ for i in range(abs(ct)):
 
 # bounding box
 y0 = i32(read(4))
@@ -184,7 +194,8 @@ def _layerinfo(file):
 # image info
 info = []
 mode = []
- types = list(range(i16(read(2))))
+ ct_types = i16(read(2))
+ types = list(range(ct_types))
 if len(types) > 4:
 continue
 
@@ -217,16 +228,16 @@ def _layerinfo(file):
 size = i32(read(4)) # length of the extra data field
 combined = 0
 if size:
- data_end = file.tell() + size
+ data_end = fp.tell() + size
 
 length = i32(read(4))
 if length:
- file.seek(length - 16, io.SEEK_CUR)
+ fp.seek(length - 16, io.SEEK_CUR)
 combined += length + 4
 
 length = i32(read(4))
 if length:
- file.seek(length, io.SEEK_CUR)
+ fp.seek(length, io.SEEK_CUR)
 combined += length + 4
 
 length = i8(read(1))
@@ -236,7 +247,7 @@ def _layerinfo(file):
 name = read(length).decode("latin-1", "replace")
 combined += length + 1
 
- file.seek(data_end)
+ fp.seek(data_end)
 layers.append((name, mode, (x0, y0, x1, y1)))
 
 # get tiles
@@ -244,7 +255,7 @@ def _layerinfo(file):
 for name, mode, bbox in layers:
 tile = []
 for m in mode:
- t = _maketile(file, m, bbox, 1)
+ t = _maketile(fp, m, bbox, 1)
 if t:
 tile.extend(t)
 layers[i] = name, mode, bbox, tile
Index: Pillow-7.2.0/src/libImaging/FliDecode.c
===================================================================
--- Pillow-7.2.0.orig/src/libImaging/FliDecode.c
+++ Pillow-7.2.0/src/libImaging/FliDecode.c
@@ -242,6 +242,11 @@ ImagingFliDecode(Imaging im, ImagingCode
 return -1;
 }
 advance = I32(ptr);
+ if (advance == 0 ) {
+ // If there's no advance, we're in an infinite loop
+ state->errcode = IMAGING_CODEC_BROKEN;
+ return -1;
+ }
 if (advance < 0 || advance > bytes) {
 state->errcode = IMAGING_CODEC_OVERRUN;
 return -1;
Index: Pillow-7.2.0/src/libImaging/Jpeg2KDecode.c
===================================================================
--- Pillow-7.2.0.orig/src/libImaging/Jpeg2KDecode.c
+++ Pillow-7.2.0/src/libImaging/Jpeg2KDecode.c
@@ -589,8 +589,7 @@ j2k_decode_entry(Imaging im, ImagingCode
 j2k_unpacker_t unpack = NULL;
 size_t buffer_size = 0, tile_bytes = 0;
 unsigned n, tile_height, tile_width;
- int components;
-
+ int total_component_width = 0;
 
 stream = opj_stream_create(BUFFER_SIZE, OPJ_TRUE);
 
@@ -751,23 +750,40 @@ j2k_decode_entry(Imaging im, ImagingCode
 goto quick_exit;
 }
 
+ if (tile_info.nb_comps != image->numcomps) {
+ state->errcode = IMAGING_CODEC_BROKEN;
+ state->state = J2K_STATE_FAILED;
+ goto quick_exit;
+ }
+
 /* Sometimes the tile_info.datasize we get back from openjpeg
- is less than numcomps*w*h, and we overflow in the
+ is less than sum(comp_bytes)*w*h, and we overflow in the
 shuffle stage */
 
 tile_width = tile_info.x1 - tile_info.x0;
 tile_height = tile_info.y1 - tile_info.y0;
- components = tile_info.nb_comps == 3 ? 4 : tile_info.nb_comps;
- if (( tile_width > UINT_MAX / components ) ||
- ( tile_height > UINT_MAX / components ) ||
- ( tile_width > UINT_MAX / (tile_height * components )) ||
- ( tile_height > UINT_MAX / (tile_width * components ))) {
+
+ /* Total component width = sum (component_width) e.g, it's
+ legal for an la file to have a 1 byte width for l, and 4 for
+ a, and then a malicious file could have a smaller tile_bytes
+ */
+
+ for (n=0; n < tile_info.nb_comps; n++) {
+ // see csize /acsize calcs
+ int csize = (image->comps[n].prec + 7) >> 3;
+ csize = (csize == 3) ? 4 : csize;
+ total_component_width += csize;
+ }
+ if ((tile_width > UINT_MAX / total_component_width) ||
+ (tile_height > UINT_MAX / total_component_width) ||
+ (tile_width > UINT_MAX / (tile_height * total_component_width)) ||
+ (tile_height > UINT_MAX / (tile_width * total_component_width))) {
 state->errcode = IMAGING_CODEC_BROKEN;
 state->state = J2K_STATE_FAILED;
 goto quick_exit;
 }
 
- tile_bytes = tile_width * tile_height * components;
+ tile_bytes = tile_width * tile_height * total_component_width;
 
 if (tile_bytes > tile_info.data_size) {
 tile_info.data_size = tile_bytes;
Index: Pillow-7.2.0/Tests/test_file_fli.py
===================================================================
--- Pillow-7.2.0.orig/Tests/test_file_fli.py
+++ Pillow-7.2.0/Tests/test_file_fli.py
@@ -123,3 +123,18 @@ def test_seek():
 
 with Image.open("Tests/images/a_fli.png") as expected:
 assert_image_equal(im, expected)
+
+
+@pytest.mark.parametrize(
+ "test_file",
+ [
+ "Tests/images/timeout-9139147ce93e20eb14088fe238e541443ffd64b3.fli",
+ "Tests/images/timeout-bff0a9dc7243a8e6ede2408d2ffa6a9964698b87.fli",
+ ],
+)
+@pytest.mark.timeout(timeout=3)
+def test_timeouts(test_file):
+ with open(test_file, "rb") as f:
+ with Image.open(f) as im:
+ with pytest.raises(OSError):
+ im.load()
Index: Pillow-7.2.0/Tests/test_file_psd.py
===================================================================
--- Pillow-7.2.0.orig/Tests/test_file_psd.py
+++ Pillow-7.2.0/Tests/test_file_psd.py
@@ -127,3 +127,25 @@ def test_combined_larger_than_size():
 # then the seek can't be negative
 with pytest.raises(OSError):
 Image.open("Tests/images/combined_larger_than_size.psd")
+
+
+@pytest.mark.parametrize(
+ "test_file,raises",
+ [
+ (
+ "Tests/images/timeout-1ee28a249896e05b83840ae8140622de8e648ba9.psd",
+ Image.UnidentifiedImageError,
+ ),
+ (
+ "Tests/images/timeout-598843abc37fc080ec36a2699ebbd44f795d3a6f.psd",
+ Image.UnidentifiedImageError,
+ ),
+ ("Tests/images/timeout-c8efc3fded6426986ba867a399791bae544f59bc.psd", OSError),
+ ("Tests/images/timeout-dedc7a4ebd856d79b4359bbcc79e8ef231ce38f6.psd", OSError),
+ ],
+)
+def test_crashes(test_file, raises):
+ with open(test_file, "rb") as f:
+ with pytest.raises(raises):
+ with Image.open(f):
+ pass
Index: Pillow-7.2.0/Tests/test_file_tiff.py
===================================================================
--- Pillow-7.2.0.orig/Tests/test_file_tiff.py
+++ Pillow-7.2.0/Tests/test_file_tiff.py
@@ -598,8 +598,9 @@ class TestFileTiff:
 @pytest.mark.filterwarnings("ignore:Possibly corrupt EXIF data")
 def test_string_dimension(self):
 # Assert that an error is raised if one of the dimensions is a string
- with pytest.raises(ValueError):
- Image.open("Tests/images/string_dimension.tiff")
+ with Image.open("Tests/images/string_dimension.tiff") as im:
+ with pytest.raises(OSError):
+ im.load()
 
 
 @pytest.mark.skipif(not is_win32(), reason="Windows only")
Index: Pillow-7.2.0/Tests/test_imagefont.py
===================================================================
--- Pillow-7.2.0.orig/Tests/test_imagefont.py
+++ Pillow-7.2.0/Tests/test_imagefont.py
@@ -768,3 +768,16 @@ def test_render_mono_size():
 
 draw.text((10, 10), "r" * 10, "black", ttf)
 assert_image_equal_tofile(im, "Tests/images/text_mono.gif")
+
+
+@pytest.mark.parametrize(
+ "test_file",
+ [
+ "Tests/fonts/oom-e8e927ba6c0d38274a37c1567560eb33baf74627.ttf",
+ ],
+)
+def test_oom(test_file):
+ with open(test_file, "rb") as f:
+ font = ImageFont.truetype(BytesIO(f.read()))
+ with pytest.raises(Image.DecompressionBombError):
+ font.getmask("Test Text")

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File security-fixes-820.patch of Package python-Pillow

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