Explain CVE-2010-0433
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.
Affected Products: n/a
References: [{'name': 'ADV-2010-0916', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2010/0916'}, {'name': '42724', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/42724'}, {'name': '39461', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/39461'}, {'name': 'oval:org.mitre.oval:def:9856', 'tags': ['vdb-entry', 'signature', 'x_refsource_OVAL'], 'url': 'https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9856'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=569774'}, {'name': 'FEDORA-2010-5357', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.html'}, {'name': 'HPSBUX02531', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=127557640302499&w=2'}, {'name': 'oval:org.mitre.oval:def:12260', 'tags': ['vdb-entry', 'signature', 'x_refsource_OVAL'], 'url': 'https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12260'}, {'name': '[oss-security] 20100303 OpenSSL (with KRB5) remote crash - CVE-2010-0433', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://www.openwall.com/lists/oss-security/2010/03/03/5'}, {'name': '[dovecot] 20100219 segfault - (imap|pop3)-login during nessus scan', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://www.mail-archive.com/dovecot%40dovecot.org/msg26224.html'}, {'name': '[syslog-ng-announce] 20110110 syslog-ng Premium Edition 3.0.6a has been released', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000101.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=567711'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.vmware.com/support/vsphere4/doc/vsp_vc41_u1_rel_notes.html'}, {'name': 'ADV-2010-0839', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2010/0839'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://cvs.openssl.org/chngview?cn=19374'}, {'name': 'SSRT100108', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=127557640302499&w=2'}, {'name': 'MDVSA-2010:076', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2010:076'}, {'name': 'HPSBUX02517', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=127128920008563&w=2'}, {'name': '[syslog-ng-announce] 20110110 syslog-ng Premium Edition 3.2.1a has been released', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000102.html'}, {'name': '39932', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/39932'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.openssl.org/news/changelog.html'}, {'name': 'ADV-2010-0933', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2010/0933'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.vmware.com/security/advisories/VMSA-2011-0003.html'}, {'name': 'SSRT100058', 'tags': ['vendor-advisory', 'x_refsource_HP'], 'url': 'http://marc.info/?l=bugtraq&m=127128920008563&w=2'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://kb.bluecoat.com/index?page=content&id=SA50'}, {'name': '20110211 VMSA-2011-0003 Third party component updates for VMware vCenter Server, vCenter Update Manager, ESXi and ESX', 'tags': ['mailing-list', 'x_refsource_BUGTRAQ'], 'url': 'http://www.securityfocus.com/archive/1/516397/100/0/threaded'}, {'name': '43311', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/43311'}, {'name': 'ADV-2010-1216', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2010/1216'}, {'name': 'oval:org.mitre.oval:def:6718', 'tags': ['vdb-entry', 'signature', 'x_refsource_OVAL'], 'url': 'https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6718'}, {'name': '42733', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/42733'}, {'name': 'FEDORA-2010-5744', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2010-April/038587.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://aix.software.ibm.com/aix/efixes/security/openssl_advisory.asc'}, {'tags': ['x_refsource_MISC'], 'url': 'http://groups.google.com/group/mailing.openssl.users/browse_thread/thread/c3e1ab0034ca4b4c/66aa896c3a78b2f7'}]
CVE State: PUBLISHED