{"id":"UBUNTU-CVE-2015-8853","details":"The (1) S_reghop3, (2) S_reghop4, and (3) S_reghopmaybe3 functions in regexec.c in Perl before 5.24.0 allow context-dependent attackers to cause a denial of service (infinite loop) via crafted utf-8 data, as demonstrated by \"a\\x80.\"","modified":"2026-02-04T03:55:45.639320Z","published":"2016-05-25T00:00:00Z","related":["USN-3625-1","USN-3625-2"],"upstream":["CVE-2015-8853"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-8853"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2016/04/20/5"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3625-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3625-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-8853"}],"affected":[{"package":{"name":"perl","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/perl@5.18.2-2ubuntu1.4?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.2-2ubuntu1.4"}]}],"versions":["5.14.2-21build1","5.18.1-4","5.18.1-4build1","5.18.1-5","5.18.2-2","5.18.2-2ubuntu1","5.18.2-2ubuntu1.1","5.18.2-2ubuntu1.3"],"ecosystem_specific":{"binaries":[{"binary_name":"libcgi-fast-perl","binary_version":"5.18.2-2ubuntu1.4"},{"binary_name":"libperl-dev","binary_version":"5.18.2-2ubuntu1.4"},{"binary_name":"libperl5.18","binary_version":"5.18.2-2ubuntu1.4"},{"binary_name":"perl","binary_version":"5.18.2-2ubuntu1.4"},{"binary_name":"perl-base","binary_version":"5.18.2-2ubuntu1.4"},{"binary_name":"perl-debug","binary_version":"5.18.2-2ubuntu1.4"},{"binary_name":"perl-modules","binary_version":"5.18.2-2ubuntu1.4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-8853.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}