{"id":"CVE-2010-0433","url":"https://www.cyber-defence.io/tools/cve/CVE-2010-0433","generatedAt":"2026-10-27T17:44:28.143Z","title":"The kssl_keytab_is_available function in ssl/kssl.c in OpenSSL before 0.9.8n, when Kerberos is enabled but Kerberos configuration files cannot be opened, does not check a certain return value, which allows remote attackers to cause a denial of service…","description":"The kssl_keytab_is_available function in ssl/kssl.c in OpenSSL before 0.9.8n, when Kerberos is enabled but Kerberos configuration files cannot be opened, does not check a certain return value, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via SSL cipher negotiation, as demonstrated by a chroot installation of Dovecot or stunnel without Kerberos configuration files inside the chroot.","published":"2010-03-05T19:30:01.000Z","lastModified":"2026-06-16T23:16:10.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":4.3,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P"},"cwe":["CWE-20"],"affected":["openssl/openssl"],"epss":{"score":0.07857,"percentile":0.94656,"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 (7.86%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://aix.software.ibm.com/aix/efixes/security/openssl_advisory.asc","source":"secalert@redhat.com"},{"url":"http://cvs.openssl.org/chngview?cn=19374","source":"secalert@redhat.com"},{"url":"http://groups.google.com/group/mailing.openssl.users/browse_thread/thread/c3e1ab0034ca4b4c/66aa896c3a78b2f7","source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2010-April/038587.html","source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.html","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=127128920008563&w=2","source":"secalert@redhat.com"},{"url":"http://marc.info/?l=bugtraq&m=127557640302499&w=2","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/39461","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/39932","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/42724","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/42733","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/43311","source":"secalert@redhat.com"},{"url":"http://www.mail-archive.com/dovecot%40dovecot.org/msg26224.html","source":"secalert@redhat.com"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2010:076","source":"secalert@redhat.com"},{"url":"http://www.openssl.org/news/changelog.html","source":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2010/03/03/5","source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/archive/1/516397/100/0/threaded","source":"secalert@redhat.com"},{"url":"http://www.vmware.com/security/advisories/VMSA-2011-0003.html","source":"secalert@redhat.com"},{"url":"http://www.vmware.com/support/vsphere4/doc/vsp_vc41_u1_rel_notes.html","source":"secalert@redhat.com"},{"url":"http://www.vupen.com/english/advisories/2010/0839","source":"secalert@redhat.com"},{"url":"http://www.vupen.com/english/advisories/2010/0916","source":"secalert@redhat.com"},{"url":"http://www.vupen.com/english/advisories/2010/0933","source":"secalert@redhat.com"},{"url":"http://www.vupen.com/english/advisories/2010/1216","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=567711","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=569774","source":"secalert@redhat.com"},{"url":"https://kb.bluecoat.com/index?page=content&id=SA50","source":"secalert@redhat.com"},{"url":"https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000101.html","source":"secalert@redhat.com"},{"url":"https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000102.html","source":"secalert@redhat.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12260","source":"secalert@redhat.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6718","source":"secalert@redhat.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9856","source":"secalert@redhat.com"},{"url":"http://aix.software.ibm.com/aix/efixes/security/openssl_advisory.asc","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://cvs.openssl.org/chngview?cn=19374","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://groups.google.com/group/mailing.openssl.users/browse_thread/thread/c3e1ab0034ca4b4c/66aa896c3a78b2f7","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2010-April/038587.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=127128920008563&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://marc.info/?l=bugtraq&m=127557640302499&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/39461","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/39932","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/42724","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/42733","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/43311","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mail-archive.com/dovecot%40dovecot.org/msg26224.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2010:076","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openssl.org/news/changelog.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2010/03/03/5","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/archive/1/516397/100/0/threaded","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vmware.com/security/advisories/VMSA-2011-0003.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vmware.com/support/vsphere4/doc/vsp_vc41_u1_rel_notes.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2010/0839","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2010/0916","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2010/0933","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2010/1216","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=567711","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=569774","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://kb.bluecoat.com/index?page=content&id=SA50","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000101.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000102.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12260","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2010-0433","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."}