10 - USN-1116-1

Executive Summary

Summary
Title	Kerberos vulnerability

Informations
Name	USN-1116-1	First vendor Publication	2011-04-19
Vendor	Ubuntu	Last vendor Modification	2011-04-19
Severity (Vendor)	N/A	Revision	N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score	10	Attack Range	Network
Cvss Impact Score	10	Attack Complexity	Low
Cvss Expoit Score	10	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 10.10 - Ubuntu 10.04 LTS - Ubuntu 9.10

Summary:

An unauthenticated remote user could crash the Kerberos service.

Software Description: - krb5: MIT Kerberos services

Details:

Felipe Ortega discovered that kadmind did not correctly handle password changing error conditions. An unauthenticated remote attacker could exploit this to crash kadmind, leading to a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 10.10:
krb5-admin-server 1.8.1+dfsg-5ubuntu0.7

Ubuntu 10.04 LTS:
krb5-admin-server 1.8.1+dfsg-2ubuntu0.9

Ubuntu 9.10:
krb5-admin-server 1.7dfsg~beta3-1ubuntu0.13

In general, a standard system update will make all the necessary changes.

References:
CVE-2011-0285

Package Information:
https://launchpad.net/ubuntu/+source/krb5/1.8.1+dfsg-5ubuntu0.7
https://launchpad.net/ubuntu/+source/krb5/1.8.1+dfsg-2ubuntu0.9
https://launchpad.net/ubuntu/+source/krb5/1.7dfsg~beta3-1ubuntu0.13

Original Source

Url : http://www.ubuntu.com/usn/USN-1116-1

CWE : Common Weakness Enumeration

%	Id	Name
100 %	CWE-20	Improper Input Validation

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:13037

Oval ID:	oval:org.mitre.oval:def:13037
Title:	USN-1116-1 -- krb5 vulnerability
Description:	krb5: MIT Kerberos services An unauthenticated remote user could crash the Kerberos service.
Family:	unix	Class:	patch
Reference(s):	USN-1116-1 CVE-2011-0285	Version:	5
Platform(s):	Ubuntu 10.10 Ubuntu 9.10 Ubuntu 10.04	Product(s):	krb5
Definition Synopsis:
Release section Ubuntu 10.10 is installed AND Installed architecture is all AND krb5-admin-server DPKG is earlier than 1.8.1+dfsg-5ubuntu0.7 OR Release section Ubuntu 9.10 is installed AND Installed architecture is all AND krb5-admin-server DPKG is earlier than 1.7dfsg~beta3-1ubuntu0.13 OR Release section Ubuntu 10.04 is installed AND Installed architecture is all AND krb5-admin-server DPKG is earlier than 1.8.1+dfsg-2ubuntu0.9

Definition Id: oval:org.mitre.oval:def:21874

Oval ID:	oval:org.mitre.oval:def:21874
Title:	RHSA-2011:0447: krb5 security update (Moderate)
Description:	The process_chpw_request function in schpw.c in the password-changing functionality in kadmind in MIT Kerberos 5 (aka krb5) 1.7 through 1.9 frees an invalid pointer, which allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a crafted request that triggers an error condition.
Family:	unix	Class:	patch
Reference(s):	RHSA-2011:0447-01 CVE-2011-0285	Version:	4
Platform(s):	Red Hat Enterprise Linux 6	Product(s):	krb5
Definition Synopsis:
The operating system installed on the system is Red Hat Enterprise Linux 6 Packages section krb5-server-ldap is earlier than 0:1.8.2-3.el6_0.7 AND krb5-devel is earlier than 0:1.8.2-3.el6_0.7 AND krb5-workstation is earlier than 0:1.8.2-3.el6_0.7 AND krb5-libs is earlier than 0:1.8.2-3.el6_0.7 AND krb5-pkinit-openssl is earlier than 0:1.8.2-3.el6_0.7 AND krb5-server is earlier than 0:1.8.2-3.el6_0.7 AND krb5 is earlier than 0:1.8.2-3.el6_0.7

Definition Id: oval:org.mitre.oval:def:23152

Oval ID:	oval:org.mitre.oval:def:23152
Title:	ELSA-2011:0447: krb5 security update (Moderate)
Description:	The process_chpw_request function in schpw.c in the password-changing functionality in kadmind in MIT Kerberos 5 (aka krb5) 1.7 through 1.9 frees an invalid pointer, which allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a crafted request that triggers an error condition.
Family:	unix	Class:	patch
Reference(s):	ELSA-2011:0447-01 CVE-2011-0285	Version:	6
Platform(s):	Oracle Linux 6	Product(s):	krb5
Definition Synopsis:
Oracle Linux 6.x rpm test krb5-server-ldap is earlier than 0:1.8.2-3.el6_0.7 AND krb5-devel is earlier than 0:1.8.2-3.el6_0.7 AND krb5-workstation is earlier than 0:1.8.2-3.el6_0.7 AND krb5-libs is earlier than 0:1.8.2-3.el6_0.7 AND krb5-pkinit-openssl is earlier than 0:1.8.2-3.el6_0.7 AND krb5-server is earlier than 0:1.8.2-3.el6_0.7 AND krb5 is earlier than 0:1.8.2-3.el6_0.7

Definition Id: oval:org.mitre.oval:def:28014

Oval ID:	oval:org.mitre.oval:def:28014
Title:	DEPRECATED: ELSA-2011-0447 -- krb5 security update (moderate)
Description:	[1.8.2-3.7] - kadmind: add upstream patch to fix free() on an invalid pointer (#696341, MITKRB5-SA-2011-004, CVE-2011-0285)
Family:	unix	Class:	patch
Reference(s):	ELSA-2011-0447 CVE-2011-0285	Version:	4
Platform(s):	Oracle Linux 6	Product(s):	krb5
Definition Synopsis:
Oracle Linux 6.x Packages match section krb5 is earlier than 0:1.8.2-3.el6_0.7 AND krb5-devel is earlier than 0:1.8.2-3.el6_0.7 AND krb5-libs is earlier than 0:1.8.2-3.el6_0.7 AND krb5-pkinit-openssl is earlier than 0:1.8.2-3.el6_0.7 AND krb5-server is earlier than 0:1.8.2-3.el6_0.7 AND krb5-server-ldap is earlier than 0:1.8.2-3.el6_0.7 AND krb5-workstation is earlier than 0:1.8.2-3.el6_0.7

CPE : Common Platform Enumeration

Type	Description	Count
Application	Mit Kerberos 5 cpe:2.3:a:mit:kerberos_5:1.9:::::::* cpe:2.3:a:mit:kerberos_5:1.8.3:::::::* cpe:2.3:a:mit:kerberos_5:1.8.2:::::::* cpe:2.3:a:mit:kerberos_5:1.8.1:::::::* cpe:2.3:a:mit:kerberos_5:1.8:::::::* cpe:2.3:a:mit:kerberos_5:1.7.1:::::::* cpe:2.3:a:mit:kerberos_5:1.7:::::::*	7

OpenVAS Exploits

Date	Description
2012-06-15	Name : Fedora Update for krb5 FEDORA-2012-8805 File : nvt/gb_fedora_2012_8805_krb5_fc15.nasl
2012-06-06	Name : RedHat Update for krb5 RHSA-2011:0447-01 File : nvt/gb_RHSA-2011_0447-01_krb5.nasl
2012-02-12	Name : Gentoo Security Advisory GLSA 201201-13 (mit-krb5) File : nvt/glsa_201201_13.nasl
2012-02-01	Name : Fedora Update for krb5 FEDORA-2011-16284 File : nvt/gb_fedora_2011_16284_krb5_fc15.nasl
2011-11-18	Name : Fedora Update for krb5 FEDORA-2011-14650 File : nvt/gb_fedora_2011_14650_krb5_fc14.nasl
2011-11-18	Name : Fedora Update for krb5 FEDORA-2011-14673 File : nvt/gb_fedora_2011_14673_krb5_fc15.nasl
2011-05-12	Name : FreeBSD Ports: krb5 File : nvt/freebsd_krb510.nasl
2011-05-10	Name : Ubuntu Update for krb5 USN-1116-1 File : nvt/gb_ubuntu_USN_1116_1.nasl
2011-05-05	Name : Fedora Update for krb5 FEDORA-2011-5343 File : nvt/gb_fedora_2011_5343_krb5_fc13.nasl
2011-05-05	Name : Fedora Update for krb5 FEDORA-2011-5345 File : nvt/gb_fedora_2011_5345_krb5_fc14.nasl
2011-04-29	Name : Mandriva Update for krb5 MDVSA-2011:077 (krb5) File : nvt/gb_mandriva_MDVSA_2011_077.nasl

Open Source Vulnerability Database (OSVDB)

Id	Description
71789	Kerberos kadmind Unspecified Packet Handling Remote DoS

Snort® IPS/IDS

Date	Description
2014-01-10	MIT Kerberos kpasswd process_chpw_request denial of service attempt RuleID : 26769 - Revision : 8 - Type : SERVER-OTHER

Nessus® Vulnerability Scanner

Date	Description
2014-06-13	Name : The remote openSUSE host is missing a security update. File : suse_11_3_krb5-110414.nasl - Type : ACT_GATHER_INFO
2014-06-13	Name : The remote openSUSE host is missing a security update. File : suse_11_4_krb5-110414.nasl - Type : ACT_GATHER_INFO
2013-07-12	Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-0447.nasl - Type : ACT_GATHER_INFO
2012-08-01	Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110414_krb5_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2012-01-24	Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201201-13.nasl - Type : ACT_GATHER_INFO
2011-06-13	Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-1116-1.nasl - Type : ACT_GATHER_INFO
2011-05-05	Name : The remote openSUSE host is missing a security update. File : suse_11_2_krb5-110414.nasl - Type : ACT_GATHER_INFO
2011-04-26	Name : The remote Fedora host is missing a security update. File : fedora_2011-5343.nasl - Type : ACT_GATHER_INFO
2011-04-26	Name : The remote Fedora host is missing a security update. File : fedora_2011-5345.nasl - Type : ACT_GATHER_INFO
2011-04-23	Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2011-077.nasl - Type : ACT_GATHER_INFO
2011-04-18	Name : The remote Fedora host is missing a security update. File : fedora_2011-5333.nasl - Type : ACT_GATHER_INFO
2011-04-15	Name : The remote FreeBSD host is missing one or more security-related updates. File : freebsd_pkg_6a3c3e5c66cb11e0a116c535f3aa24f0.nasl - Type : ACT_GATHER_INFO
2011-04-15	Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-0447.nasl - Type : ACT_GATHER_INFO

Alert History

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Date	Informations
2014-02-17 11:58:31	Multiple Updates

Global Informations

Type	Count
CWE ID(s)	1
Oval ID(s)	4
CPE ID(s)	7
osvdb(s)	1
Openvas Exploit(s)	11
Snort® Rule(s)	1
Nessus® Exploit(s)	13

	Related
10	CVE-2011-0285
Info : listing not affected by your CVSS Env Score

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10 - USN-1116-1

Executive Summary

Security-Database Scoring CVSS v3

Security-Database Scoring CVSS v2

Detail

Original Source

CWE : Common Weakness Enumeration

OVAL Definitions

CPE : Common Platform Enumeration

OpenVAS Exploits

Open Source Vulnerability Database (OSVDB)

Snort® IPS/IDS

Nessus® Vulnerability Scanner

Alert History

Global Informations

Open Standards

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