CVE-2021-22204
100Vexday Risk Score
Patch now. It under exploitation confirmed by CISA and has a working public exploit.
ssvc Actcvss 6.8epss 100%
from disclosure to weapon18 days
Published on NVDApr 23
1st PoC+18d
metasploitApr 14
CISA KEV+208d
exploitation probability
100%top 1% of all CVEs
observed exploitation
yesCISA + VulnCheck
34 public exploit(s)
Action required by CISAfederal deadline: 2021-12-01
Apply updates per vendor instructions.
Researched and written with AI from the vendor advisory and public analysis, with the sources above. Always confirm the fixed version in the official advisory before acting.
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
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Affected products
ExifTool · ExifToolpublic PoCs found — 34
exploitdbwww.exploit-db.com/exploits/50911unverifiedgithubgithub.com/convisolabs/CVE-2021-22204-exiftool★ 97githubgithub.com/UNICORDev/exploit-CVE-2021-22204★ 53githubgithub.com/AssassinUKG/CVE-2021-22204★ 27githubgithub.com/se162xg/CVE-2021-22204★ 12githubgithub.com/bilkoh/POC-CVE-2021-22204★ 8githubgithub.com/Akash7350/CVE-2021-22204★ 4githubgithub.com/trganda/CVE-2021-22204★ 3githubgithub.com/PenTestical/CVE-2021-22204★ 3githubgithub.com/ph-arm/CVE-2021-22204-Gitlab★ 2githubgithub.com/Asaad27/CVE-2021-22204-RSE★ 0githubgithub.com/battleofthebots/dejavu★ 0githubgithub.com/cc3305/CVE-2021-22204★ 0githubgithub.com/Roronoawjd/CVE-2021-22204★ 0githubgithub.com/d4ytox/CVE-2021-22204★ 0vulncheckvulncheck.com/xdb/c7544f312048unverifiedcve_referencepacketstormsecurity.com/files/162558/ExifTool-DjVu-ANT-Perl-Injection.htmlunverifiedcve_referencepacketstormsecurity.com/files/164768/GitLab-Unauthenticated-Remote-ExifTool-Command-Injection.htmlunverifiedvulncheckvulncheck.com/xdb/11cab1d195edunverifiedvulncheckvulncheck.com/xdb/793a0410f319unverifiedvulncheckvulncheck.com/xdb/195f85ead56cunverifiedvulncheckvulncheck.com/xdb/0e17974417e2unverifiedvulncheckvulncheck.com/xdb/c7f016c6ff9cunverifiedvulncheckvulncheck.com/xdb/c1144f28258funverifiedvulncheckvulncheck.com/xdb/0c2c0a7d6b52unverifiedvulncheckvulncheck.com/xdb/228b3b833130unverifiedvulncheckvulncheck.com/xdb/2e739ce176b6unverifiedvulncheckvulncheck.com/xdb/c1c6e7d5d1dcunverifiedvulncheckvulncheck.com/xdb/9c966b28d48aunverifiedvulncheckvulncheck.com/xdb/72105893a08aunverifiedcve_referencepacketstormsecurity.com/files/167038/ExifTool-12.23-Arbitrary-Code-Execution.htmlunverifiedcve_referencepacketstormsecurity.com/files/164994/GitLab-13.10.2-Remote-Code-Execution.htmlunverifiedvulncheckvulncheck.com/xdb/5ad37e033ef8unverifiedvulncheckvulncheck.com/xdb/162401353b6bunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
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://github.com/exiftool/exiftool/commit/cf0f4e7dcd024ca99615bfd1102a841a25dde031#diff-fa0d652d10dbcd246e6b1df16c1e992931d3bb717a7e36157596b76bdadb3800https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22204.jsonhttps://hackerone.com/reports/1154542https://lists.debian.org/debian-lts-announce/2021/05/msg00018.htmlhttps://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.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22204