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prevent decoding formats with zero clock rate or channels (#770)

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This commit is contained in:
Alessandro Ros
2025-05-01 17:06:55 +02:00
committed by GitHub
parent 18307140ec
commit bfacd10d35
16 changed files with 76 additions and 30 deletions
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46
pkg/format/format_test.go
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@@ -1267,19 +1267,45 @@ func FuzzUnmarshal(f *testing.F) {
f.Add(ca.in)
}
f.Fuzz(func(_ *testing.T, in string) {
f.Fuzz(func(t *testing.T, in string) {
var desc sdp.SessionDescription
err := desc.Unmarshal([]byte(in))
if err != nil || len(desc.MediaDescriptions) == 0 || len(desc.MediaDescriptions[0].MediaName.Formats) == 0 {
return
}
if err == nil && len(desc.MediaDescriptions) >= 1 && len(desc.MediaDescriptions[0].MediaName.Formats) >= 1 {
f, err := Unmarshal(desc.MediaDescriptions[0], desc.MediaDescriptions[0].MediaName.Formats[0])
if err == nil {
f.Codec()
f.ClockRate()
f.PayloadType()
f.RTPMap()
f.FMTP()
}
f, err := Unmarshal(desc.MediaDescriptions[0], desc.MediaDescriptions[0].MediaName.Formats[0])
if err != nil {
return
}
// only Generic can return zero ClockRate
if _, ok := f.(*Generic); !ok {
require.NotZero(t, f.ClockRate())
} else {
f.ClockRate()
}
f.Codec()
f.PayloadType()
f.RTPMap()
f.FMTP()
switch f := f.(type) {
case *AC3:
require.NotZero(t, f.ChannelCount)
case *G711:
require.NotZero(t, f.ChannelCount)
case *LPCM:
require.NotZero(t, f.ChannelCount)
case *Opus:
require.NotZero(t, f.ChannelCount)
case *Vorbis:
require.NotZero(t, f.ChannelCount)
}
})
}