Attached patches from upstream, which apply to 1.2.1-6. DSA should be created.
--- Henri Salo
--- src/libFLAC/stream_decoder.c.orig 2014-11-25 13:41:50.280032892 +0200
+++ src/libFLAC/stream_decoder.c 2014-11-25 13:48:39.697566936 +0200
@@ -94,7 +94,7 @@
*
***********************************************************************/
-static FLAC__byte ID3V2_TAG_[3] = { 'I', 'D', '3' };
+static const FLAC__byte ID3V2_TAG_[3] = { 'I', 'D', '3' };
/***********************************************************************
*
@@ -1386,6 +1386,10 @@
id = 0;
continue;
}
+
+ if(id >= 3)
+ return false;
+
if(x == ID3V2_TAG_[id]) {
id++;
i = 0;
--- src/libFLAC/stream_decoder.c.orig 2014-11-25 13:41:50.280032892 +0200
+++ src/libFLAC/stream_decoder.c 2014-11-25 13:46:21.862277460 +0200
@@ -2726,7 +2726,8 @@
if(decoder->private_->frame.header.blocksize < predictor_order) {
send_error_to_client_(decoder, FLAC__STREAM_DECODER_ERROR_STATUS_LOST_SYNC);
decoder->protected_->state = FLAC__STREAM_DECODER_SEARCH_FOR_FRAME_SYNC;
- return true;
+ /* We have received a potentially malicious bt stream. All we can do is error out to avoid a heap overflow. */
+ return false;
}
}
else {
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