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30 lines
1.2 KiB
Diff
30 lines
1.2 KiB
Diff
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Fix CVE-2018-7253:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7253
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Copied from upstream:
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https://github.com/dbry/WavPack/commit/36a24c7881427d2e1e4dc1cef58f19eee0d13aec
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diff --git a/cli/dsdiff.c b/cli/dsdiff.c
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index 410dc1c..c016df9 100644
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--- a/cli/dsdiff.c
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+++ b/cli/dsdiff.c
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@@ -153,7 +153,17 @@ int ParseDsdiffHeaderConfig (FILE *infile, char *infilename, char *fourcc, Wavpa
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error_line ("dsdiff file version = 0x%08x", version);
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}
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else if (!strncmp (dff_chunk_header.ckID, "PROP", 4)) {
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- char *prop_chunk = malloc ((size_t) dff_chunk_header.ckDataSize);
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+ char *prop_chunk;
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+
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+ if (dff_chunk_header.ckDataSize < 4 || dff_chunk_header.ckDataSize > 1024) {
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+ error_line ("%s is not a valid .DFF file!", infilename);
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+ return WAVPACK_SOFT_ERROR;
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+ }
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+
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+ if (debug_logging_mode)
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+ error_line ("got PROP chunk of %d bytes total", (int) dff_chunk_header.ckDataSize);
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+
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+ prop_chunk = malloc ((size_t) dff_chunk_header.ckDataSize);
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if (!DoReadFile (infile, prop_chunk, (uint32_t) dff_chunk_header.ckDataSize, &bcount) ||
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bcount != dff_chunk_header.ckDataSize) {
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