Vulnerability details

File::Find::Rule through 0.34 for Perl is vulnerable to Arbitrary Code Execution when `grep()` encounters a crafted filename. A file handle is opened with the 2 argument form of `open()` allowing an attacker controlled filename to provide the MODE parameter to `open()`, turning the filename into a command to be executed. Example: $ mkdir /tmp/poc; echo > "/tmp/poc/|id" $ perl -MFile::Find::Rule \     -E 'File::Find::Rule->grep("foo")->in("/tmp/poc")' uid=1000(user) gid=1000(user) groups=1000(user),100(users)

• https://metacpan.org/release/RCLAMP/File-Find-Rule-0.34/source/lib/File/Find/Rule.pm#L423
• https://rt.cpan.org/Public/Bug/Display.html?id=64504 issue-trackingexploit
• https://github.com/richardc/perl-file-find-rule/commit/df58128bcee4c1da78c34d7f3fe1357e575ad56f.patch patch
• https://github.com/richardc/perl-file-find-rule/pull/4 issue-tracking
• https://lists.debian.org/debian-lts-announce/2025/06/msg00006.html
• http://www.openwall.com/lists/oss-security/2025/06/05/4
• http://www.openwall.com/lists/oss-security/2025/06/06/1
• http://www.openwall.com/lists/oss-security/2025/06/06/3