{"id":"CVE-2012-2110","url":"https://www.cyber-defence.io/tools/cve/CVE-2012-2110","generatedAt":"2026-11-05T08:21:43.450Z","title":"The asn1_d2i_read_bio function in crypto/asn1/a_d2i_fp.c in OpenSSL before 0.9.8v, 1.0.0 before 1.0.0i, and 1.0.1 before 1.0.1a does not properly interpret integer data, which allows remote attackers to conduct buffer overflow attacks, and cause a…","description":"The asn1_d2i_read_bio function in crypto/asn1/a_d2i_fp.c in OpenSSL before 0.9.8v, 1.0.0 before 1.0.0i, and 1.0.1 before 1.0.1a does not properly interpret integer data, which allows remote attackers to conduct buffer overflow attacks, and cause a denial of service (memory corruption) or possibly have unspecified other impact, via crafted DER data, as demonstrated by an X.509 certificate or an RSA public key.","published":"2012-04-19T17:55:01.000Z","lastModified":"2026-06-16T23:41:01.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":7.5,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P"},"cwe":["CWE-119"],"affected":["openssl/openssl","redhat/openssl"],"epss":{"score":0.47913,"percentile":0.98858,"date":"2026-11-04","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2012-04-19","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":18756,"kind":"exploit","title":"OpenSSL - ASN1 BIO Memory Corruption","url":"https://www.exploit-db.com/exploits/18756","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/dos/18756.txt","file":"exploits/multiple/dos/18756.txt","published":"2012-04-19","added":"2012-04-19","updated":"2012-04-19","author":"Tavis Ormandy","type":"dos","platform":"multiple","port":null,"verified":true,"codes":["CVE-2012-2131","OSVDB-81223","CVE-2012-2110"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 47.9%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2012-04/0209.html","tags":["Exploit"],"source":"secalert@redhat.com"},{"url":"http://cvs.openssl.org/chngview?cn=22431","source":"secalert@redhat.com"},{"url":"http://cvs.openssl.org/chngview?cn=22434","source":"secalert@redhat.com"},{"url":"http://cvs.openssl.org/chngview?cn=22439","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-April/079149.html","source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079299.html","source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-May/080176.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/msg00014.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00015.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00007.html","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=133728068926468&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=133951357207000&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=134039053214295&w=2","source":"secalert@redhat.com"},{"url":"http://osvdb.org/81223","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-0518.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-0522.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/48847","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/48895","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/48899","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/48942","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/48999","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/57353","source":"secalert@redhat.com"},{"url":"http://support.apple.com/kb/HT5784","source":"secalert@redhat.com"},{"url":"http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564","source":"secalert@redhat.com"},{"url":"http://www.collax.com/produkte/AllinOne-server-for-small-businesses#id2565578","source":"secalert@redhat.com"},{"url":"http://www.debian.org/security/2012/dsa-2454","source":"secalert@redhat.com"},{"url":"http://www.exploit-db.com/exploits/18756","source":"secalert@redhat.com"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2012:060","source":"secalert@redhat.com"},{"url":"http://www.openssl.org/news/secadv_20120419.txt","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/53158","source":"secalert@redhat.com"},{"url":"http://www.securitytracker.com/id?1026957","source":"secalert@redhat.com"},{"url":"http://www.ubuntu.com/usn/USN-1424-1","source":"secalert@redhat.com"},{"url":"https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03839862","source":"secalert@redhat.com"},{"url":"https://kb.juniper.net/KB27376","source":"secalert@redhat.com"},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2012-04/0209.html","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://cvs.openssl.org/chngview?cn=22431","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://cvs.openssl.org/chngview?cn=22434","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://cvs.openssl.org/chngview?cn=22439","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-April/079149.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-April/079299.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-May/080176.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/msg00014.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00015.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00007.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=133728068926468&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=133951357207000&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=134039053214295&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://osvdb.org/81223","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-0518.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-0522.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"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2012-2110","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."}