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Potential Vulnerability in Cloned Code #116

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Potential Vulnerability in Cloned Code #116

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6 changes: 5 additions & 1 deletion 3rdparty/ffmpeg/libavformat/aadec.c
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Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,7 @@ static int aa_read_header(AVFormatContext *s)
AADemuxContext *c = s->priv_data;
AVIOContext *pb = s->pb;
AVStream *st;
int ret;

/* parse .aa header */
avio_skip(pb, 4); // file size
Expand Down Expand Up @@ -121,7 +122,10 @@ static int aa_read_header(AVFormatContext *s)
}
if (!strcmp(key, "HeaderKey")) { // this looks like "1234567890 1234567890 1234567890 1234567890"
av_log(s, AV_LOG_DEBUG, "HeaderKey is <%s>\n", val);
sscanf(val, "%u%u%u%u", &header_key_part[0], &header_key_part[1], &header_key_part[2], &header_key_part[3]);
ret = sscanf(val, "%u%u%u%u", &header_key_part[0], &header_key_part[1], &header_key_part[2], &header_key_part[3]);
if (ret != 4)
return AVERROR_INVALIDDATA;

for (idx = 0; idx < 4; idx++) {
AV_WB32(&header_key[idx * 4], header_key_part[idx]); // convert each part to BE!
}
Expand Down