120 lines
5.6 KiB
Diff
120 lines
5.6 KiB
Diff
Fix CVE-2018-6767:
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https://nvd.nist.gov/vuln/detail/CVE-2018-6767
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https://security-tracker.debian.org/tracker/CVE-2018-6767
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Patch copied from upstream source repository:
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https://github.com/dbry/WavPack/commit/d5bf76b5a88d044a1be1d5656698e3ba737167e5
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From d5bf76b5a88d044a1be1d5656698e3ba737167e5 Mon Sep 17 00:00:00 2001
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From: David Bryant <david@wavpack.com>
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Date: Sun, 4 Feb 2018 11:28:15 -0800
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Subject: [PATCH] issue #27, do not overwrite stack on corrupt RF64 file
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---
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cli/riff.c | 39 ++++++++++++++++++++++++++++++++-------
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1 file changed, 32 insertions(+), 7 deletions(-)
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diff --git a/cli/riff.c b/cli/riff.c
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index 8b1af45..de98c1e 100644
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--- a/cli/riff.c
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+++ b/cli/riff.c
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@@ -42,6 +42,7 @@ typedef struct {
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#pragma pack(pop)
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+#define CS64ChunkFormat "4D"
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#define DS64ChunkFormat "DDDL"
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#define WAVPACK_NO_ERROR 0
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@@ -101,13 +102,13 @@ int ParseRiffHeaderConfig (FILE *infile, char *infilename, char *fourcc, Wavpack
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if (!strncmp (chunk_header.ckID, "ds64", 4)) {
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if (chunk_header.ckSize < sizeof (DS64Chunk) ||
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- !DoReadFile (infile, &ds64_chunk, chunk_header.ckSize, &bcount) ||
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- bcount != chunk_header.ckSize) {
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+ !DoReadFile (infile, &ds64_chunk, sizeof (DS64Chunk), &bcount) ||
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+ bcount != sizeof (DS64Chunk)) {
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error_line ("%s is not a valid .WAV file!", infilename);
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return WAVPACK_SOFT_ERROR;
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}
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else if (!(config->qmode & QMODE_NO_STORE_WRAPPER) &&
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- !WavpackAddWrapper (wpc, &ds64_chunk, chunk_header.ckSize)) {
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+ !WavpackAddWrapper (wpc, &ds64_chunk, sizeof (DS64Chunk))) {
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error_line ("%s", WavpackGetErrorMessage (wpc));
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return WAVPACK_SOFT_ERROR;
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}
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@@ -315,10 +316,11 @@ int ParseRiffHeaderConfig (FILE *infile, char *infilename, char *fourcc, Wavpack
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int WriteRiffHeader (FILE *outfile, WavpackContext *wpc, int64_t total_samples, int qmode)
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{
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- int do_rf64 = 0, write_junk = 1;
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+ int do_rf64 = 0, write_junk = 1, table_length = 0;
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ChunkHeader ds64hdr, datahdr, fmthdr;
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RiffChunkHeader riffhdr;
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DS64Chunk ds64_chunk;
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+ CS64Chunk cs64_chunk;
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JunkChunk junkchunk;
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WaveHeader wavhdr;
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uint32_t bcount;
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@@ -380,6 +382,7 @@ int WriteRiffHeader (FILE *outfile, WavpackContext *wpc, int64_t total_samples,
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strncpy (riffhdr.formType, "WAVE", sizeof (riffhdr.formType));
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total_riff_bytes = sizeof (riffhdr) + wavhdrsize + sizeof (datahdr) + ((total_data_bytes + 1) & ~(int64_t)1);
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if (do_rf64) total_riff_bytes += sizeof (ds64hdr) + sizeof (ds64_chunk);
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+ total_riff_bytes += table_length * sizeof (CS64Chunk);
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if (write_junk) total_riff_bytes += sizeof (junkchunk);
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strncpy (fmthdr.ckID, "fmt ", sizeof (fmthdr.ckID));
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strncpy (datahdr.ckID, "data", sizeof (datahdr.ckID));
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@@ -394,11 +397,12 @@ int WriteRiffHeader (FILE *outfile, WavpackContext *wpc, int64_t total_samples,
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if (do_rf64) {
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strncpy (ds64hdr.ckID, "ds64", sizeof (ds64hdr.ckID));
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- ds64hdr.ckSize = sizeof (ds64_chunk);
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+ ds64hdr.ckSize = sizeof (ds64_chunk) + (table_length * sizeof (CS64Chunk));
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CLEAR (ds64_chunk);
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ds64_chunk.riffSize64 = total_riff_bytes;
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ds64_chunk.dataSize64 = total_data_bytes;
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ds64_chunk.sampleCount64 = total_samples;
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+ ds64_chunk.tableLength = table_length;
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riffhdr.ckSize = (uint32_t) -1;
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datahdr.ckSize = (uint32_t) -1;
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WavpackNativeToLittleEndian (&ds64hdr, ChunkHeaderFormat);
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@@ -409,6 +413,14 @@ int WriteRiffHeader (FILE *outfile, WavpackContext *wpc, int64_t total_samples,
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datahdr.ckSize = (uint32_t) total_data_bytes;
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}
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+ // this "table" is just a dummy placeholder for testing (normally not written)
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+
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+ if (table_length) {
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+ strncpy (cs64_chunk.ckID, "dmmy", sizeof (cs64_chunk.ckID));
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+ cs64_chunk.chunkSize64 = 12345678;
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+ WavpackNativeToLittleEndian (&cs64_chunk, CS64ChunkFormat);
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+ }
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+
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// write the RIFF chunks up to just before the data starts
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WavpackNativeToLittleEndian (&riffhdr, ChunkHeaderFormat);
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@@ -418,8 +430,21 @@ int WriteRiffHeader (FILE *outfile, WavpackContext *wpc, int64_t total_samples,
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if (!DoWriteFile (outfile, &riffhdr, sizeof (riffhdr), &bcount) || bcount != sizeof (riffhdr) ||
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(do_rf64 && (!DoWriteFile (outfile, &ds64hdr, sizeof (ds64hdr), &bcount) || bcount != sizeof (ds64hdr))) ||
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- (do_rf64 && (!DoWriteFile (outfile, &ds64_chunk, sizeof (ds64_chunk), &bcount) || bcount != sizeof (ds64_chunk))) ||
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- (write_junk && (!DoWriteFile (outfile, &junkchunk, sizeof (junkchunk), &bcount) || bcount != sizeof (junkchunk))) ||
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+ (do_rf64 && (!DoWriteFile (outfile, &ds64_chunk, sizeof (ds64_chunk), &bcount) || bcount != sizeof (ds64_chunk)))) {
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+ error_line ("can't write .WAV data, disk probably full!");
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+ return FALSE;
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+ }
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+
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+ // again, this is normally not written except for testing
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+
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+ while (table_length--)
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+ if (!DoWriteFile (outfile, &cs64_chunk, sizeof (cs64_chunk), &bcount) || bcount != sizeof (cs64_chunk)) {
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+ error_line ("can't write .WAV data, disk probably full!");
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+ return FALSE;
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+ }
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+
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+
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+ if ((write_junk && (!DoWriteFile (outfile, &junkchunk, sizeof (junkchunk), &bcount) || bcount != sizeof (junkchunk))) ||
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!DoWriteFile (outfile, &fmthdr, sizeof (fmthdr), &bcount) || bcount != sizeof (fmthdr) ||
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!DoWriteFile (outfile, &wavhdr, wavhdrsize, &bcount) || bcount != wavhdrsize ||
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!DoWriteFile (outfile, &datahdr, sizeof (datahdr), &bcount) || bcount != sizeof (datahdr)) {
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