Back to Database
Status published
Medium
CVE-2021-22204
Improper neutralization of user data in the DjVu file format...
Vulnerability 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
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-22204
Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Thanks vakzz for reporting this vulnerability through the GitLab HackerOne bug bounty program who then reported it to the ExifTool maintainer
References
- https://github.com/exiftool/exiftool/commit/cf0f4e7dcd024ca99615bfd1102a841a25dde031#diff-fa0d652d10dbcd246e6b1df16c1e992931d3bb717a7e36157596b76bdadb3800
- https://hackerone.com/reports/1154542
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22204.json
- https://www.debian.org/security/2021/dsa-4910
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U4RF6PJCJ6NQOVJJJF6HN6BORUQVIXY6/
- 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/
- http://www.openwall.com/lists/oss-security/2021/05/09/1
- http://www.openwall.com/lists/oss-security/2021/05/10/5
- http://packetstormsecurity.com/files/162558/ExifTool-DjVu-ANT-Perl-Injection.html
- https://lists.debian.org/debian-lts-announce/2021/05/msg00018.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
Affected Vendor
ExifTool
View all reports →Affected Software
ExifTool
Vulnerable Versions:
>=7.44, <12.24
Timeline
Official Publish:
April 23rd, 2021
Last Modified:
October 21st, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.