An improper integer type in the mpeg4encodegop_header function in libavcodec/mpeg4videoenc.c in FFmpeg 2.8 and 4.0 may trigger an assertion violation while converting a crafted AVI file to MPEG4, leading to a denial of service.
[
{
"signature_type": "Line",
"deprecated": false,
"digest": {
"line_hashes": [
"56833795360251818369765033581323091741",
"280404874225817245952846567227135081635",
"54896246386035839919929168273124326120",
"287697360365446967200998116568866649071"
],
"threshold": 0.9
},
"target": {
"file": "libavcodec/mpeg4videoenc.c"
},
"source": "https://github.com/ffmpeg/ffmpeg/commit/e1182fac1afba92a4975917823a5f644bee7e6e8",
"signature_version": "v1",
"id": "CVE-2018-12458-0c34ef7e"
},
{
"signature_type": "Line",
"deprecated": false,
"digest": {
"line_hashes": [
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],
"threshold": 0.9
},
"target": {
"file": "libavcodec/mpeg4videoenc.c"
},
"source": "https://github.com/ffmpeg/ffmpeg/commit/6bbef938839adc55e8e048bc9cc2e0fafe2064df",
"signature_version": "v1",
"id": "CVE-2018-12458-649dec09"
}
]