Executive Summary
| Summary | |
|---|---|
| Title | krb5 security update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2011:1790 | First vendor Publication | 2011-12-06 |
| Vendor | RedHat | Last vendor Modification | 2011-12-06 |
| Severity (Vendor) | Moderate | Revision | 01 |
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:S/C:N/I:N/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 6.8 | Attack Range | Network |
| Cvss Impact Score | 6.9 | Attack Complexity | Low |
| Cvss Expoit Score | 8 | Authentication | Requires single instance |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Problem Description: Updated krb5 packages that fix one security issue are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 3. Description: Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third-party, the Key Distribution Center (KDC). A NULL pointer dereference flaw was found in the way the MIT Kerberos KDC processed certain TGS (Ticket-granting Server) requests. A remote, authenticated attacker could use this flaw to crash the KDC via a specially-crafted TGS request. (CVE-2011-1530) Red Hat would like to thank the MIT Kerberos project for reporting this issue. All krb5 users should upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the krb5kdc daemon will be restarted automatically. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 753748 - CVE-2011-1530 krb5 (krb5kdc): NULL pointer dereference in the TGS handling (MITKRB5-SA-2011-007) |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2011-1790.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-399 | Resource Management Errors |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:15363 | |||
| Oval ID: | oval:org.mitre.oval:def:15363 | ||
| Title: | USN-1290-1 -- Kerberos vulnerability | ||
| Description: | krb5: MIT Kerberos Network Authentication Protocol The Kerberos Key Distribution Center could be made to crash. | ||
| Family: | unix | Class: | patch |
| Reference(s): | USN-1290-1 CVE-2011-1530 | Version: | 5 |
| Platform(s): | Ubuntu 11.10 | Product(s): | Kerberos |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:22167 | |||
| Oval ID: | oval:org.mitre.oval:def:22167 | ||
| Title: | RHSA-2011:1790: krb5 security update (Moderate) | ||
| Description: | The process_tgs_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.2 allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS request that triggers an error other than the KRB5_KDB_NOENTRY error. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2011:1790-01 CESA-2011:1790 CVE-2011-1530 | Version: | 4 |
| Platform(s): | Red Hat Enterprise Linux 6 CentOS Linux 6 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:23672 | |||
| Oval ID: | oval:org.mitre.oval:def:23672 | ||
| Title: | ELSA-2011:1790: krb5 security update (Moderate) | ||
| Description: | The process_tgs_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.2 allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS request that triggers an error other than the KRB5_KDB_NOENTRY error. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011:1790-01 CVE-2011-1530 | Version: | 6 |
| Platform(s): | Oracle Linux 6 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:27169 | |||
| Oval ID: | oval:org.mitre.oval:def:27169 | ||
| Title: | DEPRECATED: ELSA-2011-1790 -- krb5 security update (moderate) | ||
| Description: | [1.9-22.1] - add candidate patch to fix a NULL pointer dereference while processing TGS requests (MITKRB5-SA-2011-007, #754046) | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011-1790 CVE-2011-1530 | Version: | 4 |
| Platform(s): | Oracle Linux 6 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Application | 3 |
OpenVAS Exploits
| Date | Description |
|---|---|
| 2012-08-14 | Name : Fedora Update for krb5 FEDORA-2012-11370 File : nvt/gb_fedora_2012_11370_krb5_fc16.nasl |
| 2012-07-30 | Name : CentOS Update for krb5-devel CESA-2011:1790 centos6 File : nvt/gb_CESA-2011_1790_krb5-devel_centos6.nasl |
| 2012-07-09 | Name : RedHat Update for krb5 RHSA-2011:1790-01 File : nvt/gb_RHSA-2011_1790-01_krb5.nasl |
| 2012-06-15 | Name : Fedora Update for krb5 FEDORA-2012-8803 File : nvt/gb_fedora_2012_8803_krb5_fc16.nasl |
| 2012-06-15 | Name : Fedora Update for krb5 FEDORA-2012-8805 File : nvt/gb_fedora_2012_8805_krb5_fc15.nasl |
| 2012-04-02 | Name : Fedora Update for krb5 FEDORA-2011-16296 File : nvt/gb_fedora_2011_16296_krb5_fc16.nasl |
| 2012-03-16 | Name : Ubuntu Update for krb5 USN-1290-1 File : nvt/gb_ubuntu_USN_1290_1.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 |
| 0000-00-00 | Name : FreeBSD Ports: krb5 File : nvt/freebsd_krb514.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 77572 | MIT Kerberos 5 (krb5) src/kdc/do_tgs_req.c process_tgs_req() Function TGS Req... |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2014-11-17 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1850.nasl - Type : ACT_GATHER_INFO |
| 2014-06-13 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2011-58.nasl - Type : ACT_GATHER_INFO |
| 2013-09-04 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2011-28.nasl - Type : ACT_GATHER_INFO |
| 2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-1790.nasl - Type : ACT_GATHER_INFO |
| 2012-09-06 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2011-184.nasl - Type : ACT_GATHER_INFO |
| 2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20111206_krb5_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
| 2012-02-01 | Name : The remote Fedora host is missing a security update. File : fedora_2011-16284.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 |
| 2011-12-23 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2011-1790.nasl - Type : ACT_GATHER_INFO |
| 2011-12-14 | Name : The remote FreeBSD host is missing a security-related update. File : freebsd_pkg_6c7d9a35260811e189b4001ec9578670.nasl - Type : ACT_GATHER_INFO |
| 2011-12-13 | Name : The remote Fedora host is missing a security update. File : fedora_2011-16296.nasl - Type : ACT_GATHER_INFO |
| 2011-12-08 | Name : The remote Ubuntu host is missing a security-related patch. File : ubuntu_USN-1290-1.nasl - Type : ACT_GATHER_INFO |
| 2011-12-07 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1790.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:55:24 |
|
