{"id":"CVE-2012-2333","url":"https://www.cyber-defence.io/tools/cve/CVE-2012-2333","generatedAt":"2026-10-28T03:22:23.662Z","title":"Integer underflow in OpenSSL before 0.9.8x, 1.0.0 before 1.0.0j, and 1.0.1 before 1.0.1c, when TLS 1.1, TLS 1.2, or DTLS is used with CBC encryption, allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified…","description":"Integer underflow in OpenSSL before 0.9.8x, 1.0.0 before 1.0.0j, and 1.0.1 before 1.0.1c, when TLS 1.1, TLS 1.2, or DTLS is used with CBC encryption, allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other impact via a crafted TLS packet that is not properly handled during a certain explicit IV calculation.","published":"2012-05-14T22:55:03.000Z","lastModified":"2026-06-16T23:41:23.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":6.8,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P"},"cwe":["CWE-189"],"affected":["openssl/openssl","redhat/openssl"],"epss":{"score":0.27871,"percentile":0.98084,"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":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 27.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://cvs.openssl.org/chngview?cn=22538","source":"secalert@redhat.com"},{"url":"http://cvs.openssl.org/chngview?cn=22547","source":"secalert@redhat.com"},{"url":"http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html","source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081460.html","source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092905.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00019.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00020.html","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=134919053717161&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=136432043316835&w=2","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-0699.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-1306.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-1307.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-1308.html","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/49116","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/49208","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/49324","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/50768","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/51312","source":"secalert@redhat.com"},{"url":"http://support.apple.com/kb/HT5784","source":"secalert@redhat.com"},{"url":"http://www.cert.fi/en/reports/2012/vulnerability641549.html","source":"secalert@redhat.com"},{"url":"http://www.debian.org/security/2012/dsa-2475","source":"secalert@redhat.com"},{"url":"http://www.kb.cert.org/vuls/id/737740","tags":["US 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Resource"],"source":"secalert@redhat.com"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2012:073","source":"secalert@redhat.com"},{"url":"http://www.openssl.org/news/secadv_20120510.txt","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/53476","source":"secalert@redhat.com"},{"url":"http://www.securitytracker.com/id?1027057","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=820686","source":"secalert@redhat.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/75525","source":"secalert@redhat.com"},{"url":"http://cvs.openssl.org/chngview?cn=22538","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://cvs.openssl.org/chngview?cn=22547","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081460.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092905.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00019.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00020.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=134919053717161&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=136432043316835&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-0699.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-1306.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-1307.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-1308.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/49116","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/49208","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/49324","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/50768","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/51312","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://support.apple.com/kb/HT5784","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.cert.fi/en/reports/2012/vulnerability641549.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2012/dsa-2475","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kb.cert.org/vuls/id/737740","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2012:073","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openssl.org/news/secadv_20120510.txt","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/53476","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1027057","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=820686","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/75525","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2012-2333","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."}