CVE-2017-14056

In libavformat/rl2.c in FFmpeg 3.3.3, a DoS in rl2readheader() due to lack of an EOF (End of File) check might cause huge CPU and memory consumption. When a crafted RL2 file, which claims a large "frame_count" field in the header but does not contain sufficient backing data, is provided, the loops (for offset and size tables) would consume huge CPU and memory resources, since there is no EOF check inside these loops.

References

Affected packages

Git / github.com/ffmpeg/ffmpeg

Affected ranges

Type

GIT

Repo

https://github.com/ffmpeg/ffmpeg

Events

Introduced

9079c70d2095643af6954001d0627445650b85a6

Last affected

9079c70d2095643af6954001d0627445650b85a6

Fixed

96f24d1bee7fe7bac08e2b7c74db1a046c9dc0de

Database specific

{
    "cpe": "cpe:2.3:a:ffmpeg:ffmpeg:3.3.3:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "3.3.3"
        },
        {
            "last_affected": "3.3.3"
        }
    ],
    "source": [
        "CPE_STRING",
        "REFERENCES"
    ]
}

Affected versions

3.*

3.3.3

n3.*

n3.3.3

Database specific

vanir_signatures_modified

"2026-07-26T05:53:47Z"

vanir_signatures

[
    {
        "target": {
            "file": "libavformat/rl2.c"
        },
        "id": "CVE-2017-14056-4c596afd",
        "digest": {
            "line_hashes": [
                "247907302379413893465730818255547230272",
                "11090057546026561302099336369455383677",
                "29612325462496358882011849381761522904",
                "24856361007828859037640101895732916129",
                "255569348832479750495135909399359382135",
                "201027349898983194024044299077701239271",
                "230211058627134885901027443290241040041",
                "113792593536223129654481295600198819531",
                "146302493885283481533999349142595241609"
            ],
            "threshold": 0.9
        },
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "source": "https://github.com/ffmpeg/ffmpeg/commit/96f24d1bee7fe7bac08e2b7c74db1a046c9dc0de"
    },
    {
        "target": {
            "function": "rl2_read_header",
            "file": "libavformat/rl2.c"
        },
        "id": "CVE-2017-14056-88727ac1",
        "digest": {
            "function_hash": "301933174564969406943663011053293777135",
            "length": 3107.0
        },
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "source": "https://github.com/ffmpeg/ffmpeg/commit/96f24d1bee7fe7bac08e2b7c74db1a046c9dc0de"
    }
]

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-14056.json"