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.
Key facts
- CVSS score
- 4.3 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-20
- EPSS score
- 7.9% (95th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2010-0464)
- Published
- March 5, 2010
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2010-0464 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
- openssl / openssl
References
- http://aix.software.ibm.com/aix/efixes/security/openssl_advisory.asc
- http://cvs.openssl.org/chngview?cn=19374
- http://groups.google.com/group/mailing.openssl.users/browse_thread/thread/c3e1ab0034ca4b4c/66aa896c3a78b2f7
- http://lists.fedoraproject.org/pipermail/package-announce/2010-April/038587.html
- http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.html
- http://marc.info/?l=bugtraq&m=127128920008563&w=2
- http://marc.info/?l=bugtraq&m=127557640302499&w=2
- http://secunia.com/advisories/39461
- http://secunia.com/advisories/39932
- http://secunia.com/advisories/42724
- http://secunia.com/advisories/42733
- http://secunia.com/advisories/43311
- http://www.mail-archive.com/dovecot%40dovecot.org/msg26224.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:076
- http://www.openssl.org/news/changelog.html
- http://www.openwall.com/lists/oss-security/2010/03/03/5
- http://www.securityfocus.com/archive/1/516397/100/0/threaded
- http://www.vmware.com/security/advisories/VMSA-2011-0003.html
- http://www.vmware.com/support/vsphere4/doc/vsp_vc41_u1_rel_notes.html
- http://www.vupen.com/english/advisories/2010/0839
- http://www.vupen.com/english/advisories/2010/0916
- http://www.vupen.com/english/advisories/2010/0933
- http://www.vupen.com/english/advisories/2010/1216
- https://bugzilla.redhat.com/show_bug.cgi?id=567711
- https://bugzilla.redhat.com/show_bug.cgi?id=569774
- https://kb.bluecoat.com/index?page=content&id=SA50
- https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000101.html
- https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000102.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12260
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6718
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9856
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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