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mov: Validate spherical metadata version

This commit is contained in:
Vittorio Giovara 2017-02-15 10:40:16 -05:00
parent 2365772300
commit 0f8512c4a8
1 changed files with 22 additions and 4 deletions
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26
libavformat/mov.c
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@ -3235,7 +3235,7 @@ static int mov_read_sv3d(MOVContext *c, AVIOContext *pb, MOVAtom atom)
{
AVStream *st;
MOVStreamContext *sc;
int size;
int size, version;
int32_t yaw, pitch, roll;
uint32_t tag;
enum AVSphericalProjection projection;
@ -3260,7 +3260,13 @@ static int mov_read_sv3d(MOVContext *c, AVIOContext *pb, MOVAtom atom)
av_log(c->fc, AV_LOG_ERROR, "Missing spherical video header\n");
return 0;
}
avio_skip(pb, 4); /* version + flags */
version = avio_r8(pb);
if (version != 0) {
av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n",
version);
return 0;
}
avio_skip(pb, 3); /* flags */
avio_skip(pb, size - 12); /* metadata_source */
size = avio_rb32(pb);
@ -3282,7 +3288,13 @@ static int mov_read_sv3d(MOVContext *c, AVIOContext *pb, MOVAtom atom)
av_log(c->fc, AV_LOG_ERROR, "Missing projection header box\n");
return 0;
}
avio_skip(pb, 4); /* version + flags */
version = avio_r8(pb);
if (version != 0) {
av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n",
version);
return 0;
}
avio_skip(pb, 3); /* flags */
/* 16.16 fixed point */
yaw = avio_rb32(pb);
@ -3294,7 +3306,13 @@ static int mov_read_sv3d(MOVContext *c, AVIOContext *pb, MOVAtom atom)
return AVERROR_INVALIDDATA;
tag = avio_rl32(pb);
avio_skip(pb, 4); /* version + flags */
version = avio_r8(pb);
if (version != 0) {
av_log(c->fc, AV_LOG_WARNING, "Unknown spherical version %d\n",
version);
return 0;
}
avio_skip(pb, 3); /* flags */
switch (tag) {
case MKTAG('c','b','m','p'):
projection = AV_SPHERICAL_CUBEMAP;