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    CVE-2021-22204

    Improper neutralization of user data in the DjVu file format in ExifTool versions 7.44 and up allows arbitrary code execution when parsing the malicious image

    Published:Apr 23, 2021
    Last Modified:Nov 3, 2025
    EPS:Apr 23, 2021
    EPSS Score:0.92717
    CVSS Score:6.8

    CISA Notification

    Description

    Improper neutralization of user data in the DjVu file format in ExifTool versions 7.44 and up allows arbitrary code execution when parsing the malicious image

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Dec 1, 2021
    1745 days ago
    Alert Date
    Nov 17, 2021
    1759 days ago

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Exiftool Project
    Product
    Exiftool
    Vendor
    Fedoraproject
    Product
    Fedora

    Exploits

    http://packetstormsecurity.com/files/162558/ExifTool-DjVu-ANT-Perl-Injection.htmlhttp://packetstormsecurity.com/files/164768/GitLab-Unauthenticated-Remote-ExifTool-Command-Injection.htmlhttp://packetstormsecurity.com/files/164994/GitLab-13.10.2-Remote-Code-Execution.htmlhttp://packetstormsecurity.com/files/167038/ExifTool-12.23-Arbitrary-Code-Execution.htmlhttps://hackerone.com/reports/1154542http://packetstormsecurity.com/files/162558/ExifTool-DjVu-ANT-Perl-Injection.htmlhttp://packetstormsecurity.com/files/164768/GitLab-Unauthenticated-Remote-ExifTool-Command-Injection.htmlhttp://packetstormsecurity.com/files/164994/GitLab-13.10.2-Remote-Code-Execution.htmlhttp://packetstormsecurity.com/files/167038/ExifTool-12.23-Arbitrary-Code-Execution.htmlhttps://hackerone.com/reports/1154542https://www.exploit-db.com/exploits/50911https://github.com/0xBruno/CVE-2021-22204https://github.com/Akash7350/CVE-2021-22204https://github.com/Asaad27/CVE-2021-22204-RSEhttps://github.com/AssassinUKG/CVE-2021-22204https://github.com/battleofthebots/dejavuhttps://github.com/bilkoh/POC-CVE-2021-22204https://github.com/cc3305/CVE-2021-22204https://github.com/convisolabs/CVE-2021-22204-exiftoolhttps://github.com/d4ytox/CVE-2021-22204https://github.com/mr-tuhin/CVE-2021-22204-exiftoolhttps://github.com/PenTestical/CVE-2021-22204https://github.com/ph-arm/CVE-2021-22204-Gitlabhttps://github.com/Roronoawjd/CVE-2021-22204https://github.com/sameep0/CVE-2021-22204https://github.com/se162xg/CVE-2021-22204https://github.com/trganda/CVE-2021-22204https://github.com/UNICORDev/exploit-CVE-2021-22204

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    References

    http://packetstormsecurity.com/files/162558/ExifTool-DjVu-ANT-Perl-Injection.html
    http://packetstormsecurity.com/files/164768/GitLab-Unauthenticated-Remote-ExifTool-Command-Injection.html
    http://packetstormsecurity.com/files/164994/GitLab-13.10.2-Remote-Code-Execution.html
    http://packetstormsecurity.com/files/167038/ExifTool-12.23-Arbitrary-Code-Execution.html
    http://www.openwall.com/lists/oss-security/2021/05/09/1
    http://www.openwall.com/lists/oss-security/2021/05/10/5
    https://github.com/exiftool/exiftool/commit/cf0f4e7dcd024ca99615bfd1102a841a25dde031#diff-fa0d652d10dbcd246e6b1df16c1e992931d3bb717a7e36157596b76bdadb3800
    https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22204.json
    https://hackerone.com/reports/1154542
    https://lists.debian.org/debian-lts-announce/2021/05/msg00018.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDKDLJLBTBBR66OOPXSXCG2PQRM5KCZL/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6UOBPU3LSHAPRRJNISNVXZ5DSUIALLV/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U4RF6PJCJ6NQOVJJJF6HN6BORUQVIXY6/
    https://www.debian.org/security/2021/dsa-4910
    http://packetstormsecurity.com/files/162558/ExifTool-DjVu-ANT-Perl-Injection.html
    http://packetstormsecurity.com/files/164768/GitLab-Unauthenticated-Remote-ExifTool-Command-Injection.html
    http://packetstormsecurity.com/files/164994/GitLab-13.10.2-Remote-Code-Execution.html
    http://packetstormsecurity.com/files/167038/ExifTool-12.23-Arbitrary-Code-Execution.html
    http://www.openwall.com/lists/oss-security/2021/05/09/1
    http://www.openwall.com/lists/oss-security/2021/05/10/5
    https://github.com/exiftool/exiftool/commit/cf0f4e7dcd024ca99615bfd1102a841a25dde031#diff-fa0d652d10dbcd246e6b1df16c1e992931d3bb717a7e36157596b76bdadb3800
    https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22204.json
    https://hackerone.com/reports/1154542
    https://lists.debian.org/debian-lts-announce/2021/05/msg00018.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DDKDLJLBTBBR66OOPXSXCG2PQRM5KCZL/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6UOBPU3LSHAPRRJNISNVXZ5DSUIALLV/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U4RF6PJCJ6NQOVJJJF6HN6BORUQVIXY6/
    https://www.debian.org/security/2021/dsa-4910
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22204

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High