Vulnerability in Exiftool
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
EPSS: 0.928 (99.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.
Affected products
- Exiftool — versions >=7.44, <12.24
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- github.com/exiftool/exiftool/commit/cf0f4e7dcd024ca99615bfd1102a841a25dde031 (x_refsource_MISC)
- hackerone.com/reports/1154542 (x_refsource_MISC)
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22204.json (x_refsource_CONFIRM)
- DSA-4910 (vendor-advisory, x_refsource_DEBIAN)
- FEDORA-2021-de850ed71e (vendor-advisory, x_refsource_FEDORA)
- FEDORA-2021-e3d8833d36 (vendor-advisory, x_refsource_FEDORA)
- FEDORA-2021-88d24aa32b (vendor-advisory, x_refsource_FEDORA)
- [oss-security] 20210509 [CVE-2021-22204] ExifTool - Arbitrary code execution in the DjVu module when parsing a malicious image (mailing-list, x_refsource_MLIST)
- [oss-security] 20210510 Re: [CVE-2021-22204] ExifTool - Arbitrary code execution in the DjVu module when parsing a malicious image (mailing-list, x_refsource_MLIST)
- packetstormsecurity.com/files/162558/ExifTool-DjVu-ANT-Perl-Injection.html (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-22204?
- CVE-2021-22204 is a medium-severity vulnerability in Exiftool. CVSS score: 6.8/10. Published 2021-04-23.
- How severe is CVE-2021-22204?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2021-22204 known to be exploited?
- Yes. CVE-2021-22204 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-17), indicating it is being actively exploited. 104 public proof-of-concept repositories are indexed.