CVE-2010-0433

OpenSSL < 0.9.8n - Denial of Service via NULL Pointer Dereference in kssl_keytab_is_available

Title source: llm
STIX 2.1

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.

References (31)

Core 31
Core References
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2010/0916
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/42724
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/39461
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9856
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=569774
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/039561.html
Mailing List vendor-advisory x_refsource_hp
http://marc.info/?l=bugtraq&m=127557640302499&w=2
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12260
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2010/03/03/5
Mailing List mailing-list x_refsource_mlist
http://www.mail-archive.com/dovecot%40dovecot.org/msg26224.html
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=567711
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2010/0839
Vendor Advisory x_refsource_confirm
http://cvs.openssl.org/chngview?cn=19374
Vendor Advisory vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2010:076
Mailing List vendor-advisory x_refsource_hp
http://marc.info/?l=bugtraq&m=127128920008563&w=2
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/39932
Vendor Advisory x_refsource_confirm
http://www.openssl.org/news/changelog.html
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2010/0933
Various Sources x_refsource_confirm
https://kb.bluecoat.com/index?page=content&id=SA50
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/516397/100/0/threaded
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/43311
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2010/1216
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6718
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/42733
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2010-April/038587.html

Scores

EPSS 0.1727
EPSS Percentile 95.1%

Details

CWE
CWE-20
Status published
Products (14)
openssl/openssl 0.9.8
openssl/openssl 0.9.8a
openssl/openssl 0.9.8b
openssl/openssl 0.9.8c
openssl/openssl 0.9.8d
openssl/openssl 0.9.8e
openssl/openssl 0.9.8f
openssl/openssl 0.9.8g
openssl/openssl 0.9.8h
openssl/openssl 0.9.8i
... and 4 more
Published Mar 05, 2010
Tracked Since Feb 18, 2026