CVE-2018-7557

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Source
https://cve.org/CVERecord?id=CVE-2018-7557
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-7557.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2018-7557
Downstream
CLEANSTART (3)
DEBIAN (1)
MGASA (1)
UBUNTU (1)
Published
2018-02-28T07:29:00Z
Modified
2026-08-17T05:26:20Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

The decode_init function in libavcodec/utvideodec.c in FFmpeg 2.8 through 3.4.2 allows remote attackers to cause a denial of service (Out of array read) via an AVI file with crafted dimensions within chroma subsampling data.

Database specific 
{
    "unresolved_ranges":  [
        {
            "cpes":  [
                "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "8.0"
                },
                {
                    "last_affected":  "8.0"
                },
                {
                    "introduced":  "9.0"
                },
                {
                    "last_affected":  "9.0"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "debian:debian_linux"
        }
    ]
}
References

Affected packages

Git / git.ffmpeg.org/ffmpeg.git

Affected ranges

Type
GIT
Repo
https://git.ffmpeg.org/ffmpeg.git
Events
Introduced
58142a27ea96bf9246586a91a82db85e37646933
Last Affected
6a97ba521558ce131fe839eed2d51ff745280e1d
Fixed
7414d0bda7763f9bd69c26c068e482ab297c1c96
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "2.8"
        },
        {
            "last_affected":  "3.4.2"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

n2.*
n2.8-dev
n2.9-dev
n3.*
n3.1-dev
n3.2-dev
n3.3-dev
n3.4
n3.4-dev
n3.4.1
n3.4.2
n3.5-dev

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-7557.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "214294340827385027346326899809308912278",
                "319967151764465081227513198959321650619",
                "160860407430123656188533758835378100984",
                "88426036291747426103396839917112951526",
                "322060800242239300558022628811003160243",
                "264994763499980366517533028970536454039",
                "15401177006481919119583342312789940116",
                "218511901579334236097636589891628169652",
                "54072751883247017626672728946603888412",
                "334816836273630641830478390641941193451"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2018-7557-09358d33",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://git.ffmpeg.org/ffmpeg.git@7414d0bda7763f9bd69c26c068e482ab297c1c96",
        "target":  {
            "file":  "libavcodec/utvideodec.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "50909752490920241215824309361052532218",
            "length":  4482
        },
        "id":  "CVE-2018-7557-924bac71",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://git.ffmpeg.org/ffmpeg.git@7414d0bda7763f9bd69c26c068e482ab297c1c96",
        "target":  {
            "file":  "libavcodec/utvideodec.c",
            "function":  "decode_init"
        }
    }
]
vanir_signatures_modified 
"2026-08-17T05:26:20Z"

Git / github.com/ffmpeg/ffmpeg

Affected ranges

Type
GIT
Repo
https://github.com/ffmpeg/ffmpeg
Events
Introduced
58142a27ea96bf9246586a91a82db85e37646933
Last Affected
6a97ba521558ce131fe839eed2d51ff745280e1d
Fixed
e724bd1dd9efea3abb8586d6644ec07694afceae
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "2.8"
        },
        {
            "last_affected":  "3.4.2"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

n2.*
n2.8
n2.8-dev
n2.8.1
n2.8.10
n2.8.11
n2.8.12
n2.8.13
n2.8.14
n2.8.2
n2.8.3
n2.8.4
n2.8.5
n2.8.6
n2.8.7
n2.8.8
n2.8.9
n2.9-dev
n3.*
n3.1-dev
n3.2-dev
n3.3-dev
n3.4
n3.4-dev
n3.4.1
n3.4.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-7557.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "261170408201920726981716170408581999831",
            "length":  2014
        },
        "id":  "CVE-2018-7557-c58f81bb",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/ffmpeg/ffmpeg/commit/e724bd1dd9efea3abb8586d6644ec07694afceae",
        "target":  {
            "file":  "libavcodec/utvideodec.c",
            "function":  "decode_init"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "214294340827385027346326899809308912278",
                "319967151764465081227513198959321650619",
                "160860407430123656188533758835378100984",
                "88426036291747426103396839917112951526",
                "322060800242239300558022628811003160243",
                "294584906807958280719769276673771155382",
                "173453050150287002342984267387285969060",
                "28682244462948592149093618534071984159",
                "105041463035589690360197019114153569694",
                "112286002592890528022285994238400706647"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2018-7557-e1a439bc",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/ffmpeg/ffmpeg/commit/e724bd1dd9efea3abb8586d6644ec07694afceae",
        "target":  {
            "file":  "libavcodec/utvideodec.c"
        }
    }
]
vanir_signatures_modified 
"2026-08-17T05:26:20Z"