{"id":"CVE-2012-5370","url":"https://www.cyber-defence.io/tools/cve/CVE-2012-5370","generatedAt":"2026-10-28T03:22:22.052Z","title":"JRuby computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash…","description":"JRuby computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table, as demonstrated by a universal multicollision attack against the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4838.","published":"2012-11-28T13:03:10.000Z","lastModified":"2026-06-16T23:46:45.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P"},"cwe":["CWE-310"],"affected":["jruby/jruby"],"epss":{"score":0.02249,"percentile":0.8278,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.25%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://2012.appsec-forum.ch/conferences/#c17","source":"cve@mitre.org"},{"url":"http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf","source":"cve@mitre.org"},{"url":"http://rhn.redhat.com/errata/RHSA-2013-0533.html","source":"cve@mitre.org"},{"url":"http://www.ocert.org/advisories/ocert-2012-001.html","source":"cve@mitre.org"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=880671","source":"cve@mitre.org"},{"url":"https://www.131002.net/data/talks/appsec12_slides.pdf","source":"cve@mitre.org"},{"url":"http://2012.appsec-forum.ch/conferences/#c17","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2013-0533.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ocert.org/advisories/ocert-2012-001.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=880671","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.131002.net/data/talks/appsec12_slides.pdf","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2012-5370","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}