File openexr-CVE-2021-23215,26260.patch of Package openexr

Overview Repositories Revisions Requests Users Attributes Meta

File openexr-CVE-2021-23215,26260.patch of Package openexr (Revision d15ab8e28928e2ec2f90d949acaa1929)

Currently displaying revision d15ab8e28928e2ec2f90d949acaa1929 , Show latest

Index: openexr-2.2.1/IlmImf/ImfDwaCompressor.cpp
===================================================================
--- openexr-2.2.1.orig/IlmImf/ImfDwaCompressor.cpp	2021-04-26 14:19:38.233657002 +0200
+++ openexr-2.2.1/IlmImf/ImfDwaCompressor.cpp	2021-04-27 10:28:33.673535527 +0200
@@ -2164,7 +2164,7 @@ DwaCompressor::compress
     if (*unknownUncompressedSize > 0)
     {
         uLongf inSize  = (uLongf)(*unknownUncompressedSize);
-        uLongf outSize = (uLongf)(ceil ((float)inSize * 1.01f) + 100);
+        uLongf outSize = compressBound (inSize);
 
         if (Z_OK != ::compress2 ((Bytef *)outDataPtr,
                                  &outSize,
@@ -2202,8 +2202,8 @@ DwaCompressor::compress
           case DEFLATE:
 
             {
-                uLongf destLen = (uLongf)
-                    (2 * (*totalAcUncompressedCount) * sizeof (unsigned short));
+                uLongf destLen = compressBound (
+                    (*totalAcUncompressedCount) * sizeof (unsigned short));
 
                 if (Z_OK != ::compress2
                                 ((Bytef *)outDataPtr,
@@ -2255,8 +2255,7 @@ DwaCompressor::compress
              _planarUncBuffer[RLE],
              (signed char *)_rleBuffer);
 
-        uLongf dstLen =
-            (uLongf)ceil (1.01f * (float) * rleUncompressedSize) + 24;
+        uLongf dstLen = compressBound ((uLongf)*rleUncompressedSize);
 
         if (Z_OK != ::compress2
                         ((Bytef *)outDataPtr, 
@@ -2400,7 +2399,7 @@ DwaCompressor::uncompress
         totalDcUncompressedCount < 0) 
     {
         throw Iex::InputExc("Error uncompressing DWA data"
-                            " (corrupt header).");
+                            " (corrupt header I).");
     }
 
     if (version < 2) 
@@ -2499,16 +2498,14 @@ DwaCompressor::uncompress
 
     if (unknownCompressedSize > 0)
     {
-        uLongf outSize = static_cast<uLongf>(
-                ceil( (float)unknownUncompressedSize * 1.01) + 100);
-
-        if (unknownUncompressedSize < 0 || 
-            outSize > _planarUncBufferSize[UNKNOWN]) 
+        if (unknownUncompressedSize > _planarUncBufferSize[UNKNOWN])
         {
             throw Iex::InputExc("Error uncompressing DWA data"
-                                "(corrupt header).");
+                                "(corrupt header II).");
         }
 
+        uLongf outSize = (uLongf)unknownUncompressedSize;
+
         if (Z_OK != ::uncompress
                         ((Bytef *)_planarUncBuffer[UNKNOWN],
                          &outSize,
@@ -2528,7 +2525,7 @@ DwaCompressor::uncompress
         if ( !_packedAcBuffer || totalAcUncompressedCount*sizeof(unsigned short) > _packedAcBufferSize)
         {
             throw Iex::InputExc("Error uncompressing DWA data"
-                                "(corrupt header).");
+                                "(corrupt header III).");
         }
 
         //
@@ -2585,7 +2582,7 @@ DwaCompressor::uncompress
         if (totalDcUncompressedCount*sizeof(unsigned short) > _packedDcBufferSize)
         {
             throw Iex::InputExc("Error uncompressing DWA data"
-                                "(corrupt header).");
+                                "(corrupt header IV).");
         }
 
         if (_zip->uncompress
@@ -2607,7 +2604,7 @@ DwaCompressor::uncompress
             rleRawSize > _planarUncBufferSize[RLE])
         {
             throw Iex::InputExc("Error uncompressing DWA data"
-                                "(corrupt header).");
+                                "(corrupt header V).");
         }
  
         uLongf dstLen = (uLongf)rleUncompressedSize;
@@ -2921,19 +2918,21 @@ DwaCompressor::initializeBuffers (size_t
     // of channels we have. 
     //
 
-    int maxOutBufferSize  = 0;
-    int numLossyDctChans  = 0;
-    int unknownBufferSize = 0;
-    int rleBufferSize     = 0;
+    Int64 maxOutBufferSize  = 0;
+    Int64 numLossyDctChans  = 0;
+    Int64 unknownBufferSize = 0;
+    Int64 rleBufferSize     = 0;
 
-    int maxLossyDctAcSize = (int)ceil ((float)numScanLines() / 8.0f) * 
-                            (int)ceil ((float)(_max[0] - _min[0] + 1) / 8.0f) *
+    Int64 maxLossyDctAcSize = static_cast<Int64>(ceil ((float)numScanLines() / 8.0f)) *
+                            static_cast<Int64>(ceil ((float)(_max[0] - _min[0] + 1) / 8.0f)) *
                             63 * sizeof (unsigned short);
 
-    int maxLossyDctDcSize = (int)ceil ((float)numScanLines() / 8.0f) * 
-                            (int)ceil ((float)(_max[0] - _min[0] + 1) / 8.0f) *
+    Int64 maxLossyDctDcSize = static_cast<Int64>(ceil ((float)numScanLines() / 8.0f)) *
+                            static_cast<Int64>(ceil ((float)(_max[0] - _min[0] + 1) / 8.0f)) *
                             sizeof (unsigned short);
 
+    Int64 pixelCount = static_cast<Int64>(numScanLines()) * static_cast<Int64>(_max[0] - _min[0] + 1);
+
     for (unsigned int chan = 0; chan < _channelData.size(); ++chan)
     {
         switch (_channelData[chan].compression)
@@ -2943,10 +2942,13 @@ DwaCompressor::initializeBuffers (size_t
             //
             // This is the size of the number of packed
             // components, plus the requirements for
-            // maximum Huffman encoding size.
+            // maximum Huffman encoding size (for STATIC_HUFFMAN)
+            // or for zlib compression (for DEFLATE)
             //
 
-            maxOutBufferSize += 2 * maxLossyDctAcSize + 65536;
+            maxOutBufferSize += std::max(
+                            2lu * maxLossyDctAcSize + 65536lu,
+                            static_cast<Int64>(compressBound (maxLossyDctAcSize)) );
             numLossyDctChans++;
             break;
 
@@ -2957,8 +2959,7 @@ DwaCompressor::initializeBuffers (size_t
                 // of the source data.
                 //
 
-                int rleAmount = 2 * numScanLines() * (_max[0] - _min[0] + 1) *
-                                Imf::pixelTypeSize (_channelData[chan].type);
+                Int64 rleAmount = 2 * pixelCount * Imf::pixelTypeSize (_channelData[chan].type);
 
                 rleBufferSize += rleAmount;
             }
@@ -2967,8 +2968,7 @@ DwaCompressor::initializeBuffers (size_t
 
           case UNKNOWN:
 
-            unknownBufferSize += numScanLines() * (_max[0] - _min[0] + 1) *
-                                 Imf::pixelTypeSize (_channelData[chan].type);
+            unknownBufferSize += pixelCount * Imf::pixelTypeSize (_channelData[chan].type);
             break;
 
           default:
@@ -2985,13 +2985,13 @@ DwaCompressor::initializeBuffers (size_t
     // which could take slightly more space
     //
 
-    maxOutBufferSize += (int)(ceil (1.01f * (float)rleBufferSize) + 100);
+    maxOutBufferSize += static_cast<Int64>(compressBound (rleBufferSize));
     
     //
     // And the same goes for the UNKNOWN data
     //
 
-    maxOutBufferSize += (int)(ceil (1.01f * (float)unknownBufferSize) + 100);
+    maxOutBufferSize += static_cast<Int64>(compressBound (unknownBufferSize));
 
     //
     // Allocate a zip/deflate compressor big enought to hold the DC data
@@ -3077,7 +3077,7 @@ DwaCompressor::initializeBuffers (size_t
     // all in one swoop (for each compression scheme).
     //
 
-    int planarUncBufferSize[NUM_COMPRESSOR_SCHEMES];
+    Int64 planarUncBufferSize[NUM_COMPRESSOR_SCHEMES];
     for (int i=0; i<NUM_COMPRESSOR_SCHEMES; ++i)
         planarUncBufferSize[i] = 0;
 
@@ -3090,13 +3090,13 @@ DwaCompressor::initializeBuffers (size_t
 
           case RLE:
             planarUncBufferSize[RLE] +=
-                     numScanLines() * (_max[0] - _min[0] + 1) *
+                     pixelCount *
                      Imf::pixelTypeSize (_channelData[chan].type);
             break;
 
           case UNKNOWN: 
             planarUncBufferSize[UNKNOWN] +=
-                     numScanLines() * (_max[0] - _min[0] + 1) *
+                     pixelCount *
                      Imf::pixelTypeSize (_channelData[chan].type);
             break;
 
@@ -3114,7 +3114,7 @@ DwaCompressor::initializeBuffers (size_t
     if (planarUncBufferSize[UNKNOWN] > 0)
     {
         planarUncBufferSize[UNKNOWN] =
-            (int) ceil (1.01f * (float)planarUncBufferSize[UNKNOWN]) + 100;
+            static_cast<Int64>( compressBound (planarUncBufferSize[UNKNOWN]) );
     }
 
     for (int i = 0; i < NUM_COMPRESSOR_SCHEMES; ++i)
@@ -3124,6 +3124,12 @@ DwaCompressor::initializeBuffers (size_t
             _planarUncBufferSize[i] = planarUncBufferSize[i];
             if (_planarUncBuffer[i] != 0) 
                 delete[] _planarUncBuffer[i];
+
+            if (planarUncBufferSize[i] > std::numeric_limits<size_t>::max())
+            {
+                throw IEX_NAMESPACE::ArgExc("DWA buffers too large");
+            }
+
             _planarUncBuffer[i] = new char[planarUncBufferSize[i]];
         }
     }
Index: openexr-2.2.1/IlmImf/ImfDwaCompressor.h
===================================================================
--- openexr-2.2.1.orig/IlmImf/ImfDwaCompressor.h	2017-11-18 00:00:24.000000000 +0100
+++ openexr-2.2.1/IlmImf/ImfDwaCompressor.h	2021-04-26 14:19:38.249657084 +0200
@@ -155,16 +155,16 @@ class DwaCompressor: public Compressor
     std::vector<CscChannelSet> _cscSets;
     std::vector<Classifier>    _channelRules;
 
-    char             *_packedAcBuffer;
-    size_t            _packedAcBufferSize;
-    char             *_packedDcBuffer;
-    size_t            _packedDcBufferSize;
-    char             *_rleBuffer;
-    size_t            _rleBufferSize;
-    char             *_outBuffer;
-    size_t            _outBufferSize;
-    char             *_planarUncBuffer[NUM_COMPRESSOR_SCHEMES];
-    size_t            _planarUncBufferSize[NUM_COMPRESSOR_SCHEMES];
+    char*             _packedAcBuffer;
+    Int64             _packedAcBufferSize;
+    char*             _packedDcBuffer;
+    Int64             _packedDcBufferSize;
+    char*             _rleBuffer;
+    Int64             _rleBufferSize;
+    char*             _outBuffer;
+    Int64             _outBufferSize;
+    char*             _planarUncBuffer[NUM_COMPRESSOR_SCHEMES];
+    Int64             _planarUncBufferSize[NUM_COMPRESSOR_SCHEMES];
 
     Zip              *_zip;
     float             _dwaCompressionLevel;

Places

File openexr-CVE-2021-23215,26260.patch of Package openexr (Revision d15ab8e28928e2ec2f90d949acaa1929)

Places