CVE-2010-0433

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.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 17.77% Top 10%
Vendor Advisory fedoraproject.org Vendor Advisory marc.info Vendor Advisory mandriva.com Vendor Advisory marc.info Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.vupen.com/english/advisories/2010/0916 vdb entry
http://secunia.com/advisories/42724 third party advisory
http://secunia.com/advisories/39461 third party advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9856 vdb entry signature
https://bugzilla.redhat.com/show_bug.cgi?id=569774
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.html vendor advisory
http://marc.info/?l=bugtraq&m=127557640302499&w=2 vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12260 vdb entry signature
http://www.openwall.com/lists/oss-security/2010/03/03/5 mailing list
http://www.mail-archive.com/dovecot%40dovecot.org/msg26224.html mailing list
https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000101.html mailing list
https://bugzilla.redhat.com/show_bug.cgi?id=567711
http://www.vmware.com/support/vsphere4/doc/vsp_vc41_u1_rel_notes.html
http://www.vupen.com/english/advisories/2010/0839 vdb entry
http://cvs.openssl.org/chngview?cn=19374
http://www.mandriva.com/security/advisories?name=MDVSA-2010:076 vendor advisory
http://marc.info/?l=bugtraq&m=127128920008563&w=2 vendor advisory
https://lists.balabit.com/pipermail/syslog-ng-announce/2011-January/000102.html mailing list
http://secunia.com/advisories/39932 third party advisory
http://www.openssl.org/news/changelog.html
http://www.vupen.com/english/advisories/2010/0933 vdb entry
http://www.vmware.com/security/advisories/VMSA-2011-0003.html
https://kb.bluecoat.com/index?page=content&id=SA50
http://www.securityfocus.com/archive/1/516397/100/0/threaded mailing list
http://secunia.com/advisories/43311 third party advisory
http://www.vupen.com/english/advisories/2010/1216 vdb entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6718 vdb entry signature
http://secunia.com/advisories/42733 third party advisory
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/038587.html vendor advisory
http://aix.software.ibm.com/aix/efixes/security/openssl_advisory.asc
http://groups.google.com/group/mailing.openssl.users/browse_thread/thread/c3e1ab0034ca4b4c/66aa896c3a78b2f7

Frequently Asked Questions

What is the severity of CVE-2010-0433?
CVE-2010-0433 has been scored as a medium severity vulnerability.
How to fix CVE-2010-0433?
To fix CVE-2010-0433, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2010-0433 being actively exploited in the wild?
It is possible that CVE-2010-0433 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~18% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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