The Dumper method in Data::Dumper before 2.154, as used in Perl 5.20.1 and earlier, allows context-dependent attackers to cause a denial of service (stack consumption and crash) via an Array-Reference with many nested Array-References, which triggers a large number of recursive calls to the DD_dump function.
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_version": "5.18.2-2ubuntu1.1", "binary_name": "libcgi-fast-perl" }, { "binary_version": "5.18.2-2ubuntu1.1", "binary_name": "libperl-dev" }, { "binary_version": "5.18.2-2ubuntu1.1", "binary_name": "libperl5.18" }, { "binary_version": "5.18.2-2ubuntu1.1", "binary_name": "perl" }, { "binary_version": "5.18.2-2ubuntu1.1", "binary_name": "perl-base" }, { "binary_version": "5.18.2-2ubuntu1.1", "binary_name": "perl-debug" }, { "binary_version": "5.18.2-2ubuntu1.1", "binary_name": "perl-doc" }, { "binary_version": "5.18.2-2ubuntu1.1", "binary_name": "perl-modules" } ] }