lib/Image/ExifTool.pm in ExifTool before 12.38 mishandles a $file =~ /\|$/ check, leading to command injection.

• https://github.com/exiftool/exiftool/commit/74dbab1d2766d6422bb05b033ac6634bf8d1f582
• https://gist.github.com/ert-plus/1414276e4cb5d56dd431c2f0429e4429

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

• 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