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Last updated: 7/24/2014 1:46:59 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2010-0433

Original release date: 03/05/2010
Last revised: 07/18/2011
Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.3 (MEDIUM) (AV:N/AC:M/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: VUPEN
Name: ADV-2010-0839
External Source: FEDORA
Name: FEDORA-2010-5357
External Source: VUPEN
Name: ADV-2010-0916
External Source: MLIST
Name: [dovecot] 20100219 segfault - (imap|pop3)-login during nessus scan
External Source: MLIST
Name: [oss-security] 20100303 OpenSSL (with KRB5) remote crash - CVE-2010-0433
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=569774
External Source: CONFIRM
Name: http://aix.software.ibm.com/aix/efixes/security/openssl_advisory.asc
External Source: SECUNIA
Name: 42733
External Source: SECUNIA
Name: 43311
External Source: SECUNIA
Name: 42724
External Source: OVAL
Name: oval:org.mitre.oval:def:9856
External Source: OVAL
Name: oval:org.mitre.oval:def:12260
External Source: MISC
Name: http://groups.google.com/group/mailing.openssl.users/browse_thread/thread/c3e1ab0034ca4b4c/66aa896c3a78b2f7
External Source: MANDRIVA
Name: MDVSA-2010:076
External Source: CONFIRM
Name: http://www.openssl.org/news/changelog.html
External Source: BUGTRAQ
Name: 20110211 VMSA-2011-0003 Third party component updates for VMware vCenter Server, vCenter Update Manager, ESXi and ESX
External Source: CONFIRM
Name: http://www.vmware.com/security/advisories/VMSA-2011-0003.html
External Source: OVAL
Name: oval:org.mitre.oval:def:6718
External Source: CONFIRM
Name: http://cvs.openssl.org/chngview?cn=19374
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=567711
External Source: CONFIRM
Name: http://www.vmware.com/support/vsphere4/doc/vsp_vc41_u1_rel_notes.html
External Source: FEDORA
Name: FEDORA-2010-5744
External Source: MLIST
Name: [syslog-ng-announce] 20110110 syslog-ng Premium Edition 3.2.1a has been released
External Source: SECUNIA
Name: 39932
External Source: SECUNIA
Name: 39461
External Source: VUPEN
Name: ADV-2010-0933
External Source: MLIST
Name: [syslog-ng-announce] 20110110 syslog-ng Premium Edition 3.0.6a has been released
External Source: VUPEN
Name: ADV-2010-1216
External Source: CONFIRM
Name: https://kb.bluecoat.com/index?page=content&id=SA50

References to Check Content

Identifier: oval:org.mitre.oval:def:12260
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5
Identifier: oval:org.mitre.oval:def:6718
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5
Identifier: oval:org.mitre.oval:def:9856
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Technical Details

Vulnerability Type (View All)