CVE-2021-22204
HIGHCVSS 7.8/10Actively ExploitedEPSS 99.98%
Last modified
CVE-2021-22204 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.98% chance of exploitation in the next 30 days.
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
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Exiftool Project | Exiftool | >= 7.44, < 12.24 |
| Debian | Debian Linux | 9.0 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 32 |
| Fedoraproject | Fedora | 33 |
| Fedoraproject | Fedora | 34 |
References
- http://packetstormsecurity.com/files/162558/ExifTool-DjVu-ANT-Perl-Injection.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/164768/GitLab-Unauthenticated-Remote-ExifTool-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/164994/GitLab-13.10.2-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/167038/ExifTool-12.23-Arbitrary-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2021/05/09/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/10/5Mailing List, Third Party Advisory
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22204.jsonThird Party Advisory
- https://hackerone.com/reports/1154542Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/05/msg00018.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2021/dsa-4910Mailing List, Third Party Advisory
- http://packetstormsecurity.com/files/162558/ExifTool-DjVu-ANT-Perl-Injection.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/164768/GitLab-Unauthenticated-Remote-ExifTool-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/164994/GitLab-13.10.2-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/167038/ExifTool-12.23-Arbitrary-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2021/05/09/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/05/10/5Mailing List, Third Party Advisory
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22204.jsonThird Party Advisory
- https://hackerone.com/reports/1154542Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/05/msg00018.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2021/dsa-4910Mailing List, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22204US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is 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
How severe is CVE-2021-22204?
CVE-2021-22204 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 99.98% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2021-22204?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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Are you affected by CVE-2021-22204?
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