Executive Summary
| Summary | |
|---|---|
| Title | krb5 security update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2011:0356 | First vendor Publication | 2011-03-16 |
| Vendor | RedHat | Last vendor Modification | 2011-03-16 |
| Severity (Vendor) | Important | 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:H/Au:N/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 7.6 | Attack Range | Network |
| Cvss Impact Score | 10 | Attack Complexity | High |
| Cvss Expoit Score | 4.9 | Authentication | None Required |
| 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 important 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). The Public Key Cryptography for Initial Authentication in Kerberos (PKINIT) capability provides support for using public-key authentication with Kerberos. A double-free flaw was found in the way the MIT Kerberos KDC handled initial authentication requests (AS-REQ), when the KDC was configured to provide the PKINIT capability. A remote attacker could use this flaw to cause the KDC daemon to abort by using a specially-crafted AS-REQ request. (CVE-2011-0284) 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/): 674325 - CVE-2011-0284 krb5 (krb5kdc): Double-free flaw by handling error messages upon receiving certain AS_REQ's (MITKRB5-SA-2011-003) |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2011-0356.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-399 | Resource Management Errors |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:21789 | |||
| Oval ID: | oval:org.mitre.oval:def:21789 | ||
| Title: | RHSA-2011:0356: krb5 security update (Important) | ||
| Description: | Double free vulnerability in the prepare_error_as function in do_as_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 through 1.9, when the PKINIT feature is enabled, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via an e_data field containing typed data. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2011:0356-01 CVE-2011-0284 | Version: | 4 |
| Platform(s): | Red Hat Enterprise Linux 6 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:23442 | |||
| Oval ID: | oval:org.mitre.oval:def:23442 | ||
| Title: | ELSA-2011:0356: krb5 security update (Important) | ||
| Description: | Double free vulnerability in the prepare_error_as function in do_as_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 through 1.9, when the PKINIT feature is enabled, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via an e_data field containing typed data. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011:0356-01 CVE-2011-0284 | Version: | 6 |
| Platform(s): | Oracle Linux 6 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:28147 | |||
| Oval ID: | oval:org.mitre.oval:def:28147 | ||
| Title: | DEPRECATED: ELSA-2011-0356 -- krb5 security update (important) | ||
| Description: | [1.8.2-3.6] - add revised upstream patch to fix double-free in KDC while returning typed-data with errors (CVE-2011-0284, #681564) [1.8.2-3.5] - add upstream patches to fix double-free in KDC while returning typed-data with errors (CVE-2011-0284, #681564) | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011-0356 CVE-2011-0284 | Version: | 4 |
| Platform(s): | Oracle Linux 6 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
CPE : Common Platform Enumeration
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-2011:0356-01 File : nvt/gb_RHSA-2011_0356-01_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_krb511.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 |
| 2011-03-25 | Name : Fedora Update for krb5 FEDORA-2011-3462 File : nvt/gb_fedora_2011_3462_krb5_fc14.nasl |
| 2011-03-25 | Name : Fedora Update for krb5 FEDORA-2011-3464 File : nvt/gb_fedora_2011_3464_krb5_fc13.nasl |
| 2011-03-24 | Name : Ubuntu Update for krb5 vulnerability USN-1088-1 File : nvt/gb_ubuntu_USN_1088_1.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 71183 | Kerberos KDC src/kdc/do_as_req.c prepare_error_as() Function AS-REQ Request D... Kerberos contains a flaw related to the Key Distribution Center daemon within the 'prepare_error_as()' function in 'src/kdc/do_as_req.c' failing to properly handle AS-REQ requests. This may allow a remote attacker to use crafted AS-REQ requests to cause a double-free condition, which may allow the attacker to execute arbitrary code. |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2015-01-19 | Name : The remote Solaris system is missing a security patch for third-party software. File : solaris11_kerberos_20130924_2.nasl - Type : ACT_GATHER_INFO |
| 2014-06-13 | Name : The remote openSUSE host is missing a security update. File : suse_11_3_krb5-110316.nasl - Type : ACT_GATHER_INFO |
| 2014-06-13 | Name : The remote openSUSE host is missing a security update. File : suse_11_4_krb5-110316.nasl - Type : ACT_GATHER_INFO |
| 2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-0356.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 |
| 2011-05-05 | Name : The remote openSUSE host is missing a security update. File : suse_11_2_krb5-110316.nasl - Type : ACT_GATHER_INFO |
| 2011-04-15 | Name : The remote FreeBSD host is missing one or more security-related updates. File : freebsd_pkg_7edac52a66cd11e093985d45f3aa24f0.nasl - Type : ACT_GATHER_INFO |
| 2011-03-25 | Name : The remote Fedora host is missing a security update. File : fedora_2011-3462.nasl - Type : ACT_GATHER_INFO |
| 2011-03-25 | Name : The remote Fedora host is missing a security update. File : fedora_2011-3464.nasl - Type : ACT_GATHER_INFO |
| 2011-03-22 | Name : The remote Fedora host is missing a security update. File : fedora_2011-3547.nasl - Type : ACT_GATHER_INFO |
| 2011-03-21 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2011-048.nasl - Type : ACT_GATHER_INFO |
| 2011-03-17 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-0356.nasl - Type : ACT_GATHER_INFO |
| 2011-03-16 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1088-1.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:54:29 |
|
