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Vulnerability Summary for CVE-2010-1321

Original release date: 05/19/2010
Last revised: 01/18/2012
Source: US-CERT/NIST

Overview

The kg_accept_krb5 function in krb5/accept_sec_context.c in the GSS-API library in MIT Kerberos 5 (aka krb5) through 1.7.1 and 1.8 before 1.8.2, as used in kadmind and other applications, does not properly check for invalid GSS-API tokens, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an AP-REQ message in which the authenticator's checksum field is missing.

Description

Per: http://cwe.mitre.org/data/definitions/476.html 'CWE-476: NULL Pointer Dereference'

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 6.8 (HIGH) (AV:N/AC:L/AU:S/C:N/I:N/A:C) (legend)
Impact Subscore: 6.9
Exploitability Subscore: 8.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Required to exploit
Impact Type: Allows disruption of service
Per: http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-005.txt 'AFFECTED SOFTWARE ================= * kadmind and other GSS-API server applications in all known releases of MIT krb5, up to and including krb5-1.8.1 * third-party GSS-API server applications that link link against the GSS-API library in all known releases of MIT krb5, up to and including krb5-1.8.1 * Independent implementations of the krb5 GSS-API mechanism may be vulnerable, as the underlying bug is based on plausible (but invalid) assumptions about the Kerberos protocol.'

References to Advisories, Solutions, and Tools

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External Source: SUSE
Name: SUSE-SU-2012:0042
External Source: VUPEN
Name: ADV-2010-1196
External Source: FEDORA
Name: FEDORA-2010-8749
External Source: OVAL
Name: oval:org.mitre.oval:def:7198
External Source: SECUNIA
Name: 43335
External Source: REDHAT
Name: RHSA-2010:0873
External Source: REDHAT
Name: RHSA-2010:0935
External Source: OSVDB
Name: 64744
External Source: DEBIAN
Name: DSA-2052
External Source: SECUNIA
Name: 39784
External Source: BID
Name: 40235
External Source: SUSE
Name: SUSE-SR:2010:014
External Source: REDHAT
Name: RHSA-2011:0880
External Source: SUSE
Name: SUSE-SU-2012:0010
External Source: SECUNIA
Name: 39762
External Source: OVAL
Name: oval:org.mitre.oval:def:11604
US-CERT Vulnerability Note: CERT
Name: TA11-201A
External Source: SECUNIA
Name: 39818
External Source: SECUNIA
Name: 39799
External Source: SECUNIA
Name: 40346
External Source: SECUNIA
Name: 42432
External Source: VUPEN
Name: ADV-2010-1222
External Source: SUSE
Name: SUSE-SR:2010:013
External Source: REDHAT
Name: RHSA-2010:0987
External Source: REDHAT
Name: RHSA-2010:0423
External Source: CONFIRM
Name: http://www.oracle.com/technetwork/topics/security/javacpuoct2010-176258.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: FEDORA
Name: FEDORA-2010-8796
External Source: SECUNIA
Name: 39849
External Source: FEDORA
Name: FEDORA-2010-8805
External Source: CONFIRM
Name: http://www.oracle.com/technetwork/topics/security/cpujuly2011-313328.html
External Source: UBUNTU
Name: USN-940-2
External Source: UBUNTU
Name: USN-940-1
US-CERT Vulnerability Note: CERT
Name: TA10-287A
External Source: CONFIRM
Name: http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-005.txt
Type: Advisory; Patch Information
External Source: SECUNIA
Name: 40685
External Source: VUPEN
Name: ADV-2010-1574
External Source: VUPEN
Name: ADV-2010-1882
External Source: HP
Name: HPSBUX02544
External Source: CONFIRM
Name: http://www.vmware.com/security/advisories/VMSA-2011-0003.html
External Source: HP
Name: SSRT100107
External Source: CONFIRM
Name: http://www.oracle.com/technetwork/topics/security/cpujan2011-194091.html
External Source: SUSE
Name: SUSE-SR:2010:019
External Source: BUGTRAQ
Name: 20100518 MITKRB5-SA-2010-005 [CVE-2010-1321] GSS-API lib null pointer deref
Type: Patch Information
External Source: VUPEN
Name: ADV-2010-1192
External Source: SECUNIA
Name: 41967
External Source: VUPEN
Name: ADV-2011-0134
External Source: SECUNIA
Name: 44954
External Source: MANDRIVA
Name: MDVSA-2010:100
External Source: VUPEN
Name: ADV-2010-3112
External Source: OVAL
Name: oval:org.mitre.oval:def:7450
External Source: REDHAT
Name: RHSA-2010:0807
External Source: REDHAT
Name: RHSA-2010:0770
External Source: CONFIRM
Name: http://support.avaya.com/css/P8/documents/100114315
External Source: VUPEN
Name: ADV-2010-1177
External Source: SECUNIA
Name: 42974
External Source: REDHAT
Name: RHSA-2011:0152
External Source: VUPEN
Name: ADV-2010-1193

References to Check Content

Identifier: oval:org.mitre.oval:def:11604
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5
Identifier: oval:org.mitre.oval:def:7198
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5
Identifier: oval:org.mitre.oval:def:7450
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

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