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Added minimum size check for WAV header block lengh values

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This commit is contained in:
oparviainen 2018-08-12 20:24:37 +03:00
parent 1ab7e7ccd0
commit 9e02d9b04f
1 changed files with 9 additions and 1 deletions
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10
source/SoundStretch/WavFile.cpp
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@ -530,7 +530,11 @@ int WavInFile::readHeaderBlock()
// read length of the format field
if (fread(&nLen, sizeof(int), 1, fptr) != 1) return -1;
// swap byte order if necessary
_swap32(nLen); // int format_len;
_swap32(nLen);
// verify that header length isn't smaller than expected
if (nLen < sizeof(header.format) - 8) return -1;
header.format.format_len = nLen;
// calculate how much length differs from expected
@ -572,6 +576,10 @@ int WavInFile::readHeaderBlock()
if (fread(&nLen, sizeof(int), 1, fptr) != 1) return -1;
// swap byte order if necessary
_swap32(nLen); // int fact_len;
// verify that fact length isn't smaller than expected
if (nLen < sizeof(header.fact) - 8) return -1;
header.fact.fact_len = nLen;
// calculate how much length differs from expected