Executive Summary
| Summary | |
|---|---|
| Title | krb5 security update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2013:0748 | First vendor Publication | 2013-04-16 |
| Vendor | RedHat | Last vendor Modification | 2013-04-16 |
| 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:P) | |||
|---|---|---|---|
| Cvss Base Score | 4 | Attack Range | Network |
| Cvss Impact Score | 2.9 | 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-2013-1416) 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/knowledge/articles/11258 5. Bugs fixed (http://bugzilla.redhat.com/): 949984 - CVE-2013-1416 krb5: NULL pointer dereference (DoS, KDC crash) by processing certain TGS requests |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2013-0748.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-476 | NULL Pointer Dereference |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:21099 | |||
| Oval ID: | oval:org.mitre.oval:def:21099 | ||
| Title: | RHSA-2013:0748: krb5 security update (Moderate) | ||
| Description: | The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS-REQ request. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2013:0748-01 CESA-2013:0748 CVE-2013-1416 | Version: | 4 |
| Platform(s): | Red Hat Enterprise Linux 6 CentOS Linux 6 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:24122 | |||
| Oval ID: | oval:org.mitre.oval:def:24122 | ||
| Title: | ELSA-2013:0748: krb5 security update (Moderate) | ||
| Description: | The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS-REQ request. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2013:0748-01 CVE-2013-1416 | Version: | 6 |
| Platform(s): | Oracle Linux 6 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:27468 | |||
| Oval ID: | oval:org.mitre.oval:def:27468 | ||
| Title: | DEPRECATED: ELSA-2013-0748 -- krb5 security update (moderate) | ||
| Description: | [1.10.3-10.2] - incorporate upstream patch to fix a NULL pointer dereference while processing certain TGS requests (CVE-2013-1416, #950342) | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2013-0748 CVE-2013-1416 | Version: | 4 |
| Platform(s): | Oracle Linux 6 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
CPE : Common Platform Enumeration
Information Assurance Vulnerability Management (IAVM)
| Date | Description |
|---|---|
| 2013-05-09 | IAVM : 2013-B-0044 - MIT Kerberos Denial of Service Vulnerabilities Severity : Category I - VMSKEY : V0037773 |
Snort® IPS/IDS
| Date | Description |
|---|---|
| 2014-01-10 | MIT Kerberos KDC prep_reprocess_req null pointer dereference attempt RuleID : 27906 - Revision : 3 - Type : SERVER-OTHER |
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_20130716.nasl - Type : ACT_GATHER_INFO |
| 2014-11-26 | Name : The remote OracleVM host is missing a security update. File : oraclevm_OVMSA-2014-0034.nasl - Type : ACT_GATHER_INFO |
| 2014-08-12 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-2310-1.nasl - Type : ACT_GATHER_INFO |
| 2014-06-13 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2013-401.nasl - Type : ACT_GATHER_INFO |
| 2013-12-17 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201312-12.nasl - Type : ACT_GATHER_INFO |
| 2013-09-04 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2013-182.nasl - Type : ACT_GATHER_INFO |
| 2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2013-0748.nasl - Type : ACT_GATHER_INFO |
| 2013-05-01 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2013-158.nasl - Type : ACT_GATHER_INFO |
| 2013-04-18 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2013-0748.nasl - Type : ACT_GATHER_INFO |
| 2013-04-18 | Name : The remote Fedora host is missing a security update. File : fedora_2013-5280.nasl - Type : ACT_GATHER_INFO |
| 2013-04-18 | Name : The remote Fedora host is missing a security update. File : fedora_2013-5286.nasl - Type : ACT_GATHER_INFO |
| 2013-04-17 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2013-0748.nasl - Type : ACT_GATHER_INFO |
| 2013-04-17 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20130416_krb5_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:57:08 |
|
| 2013-11-11 12:41:37 |
|
| 2013-04-22 17:20:32 |
|
| 2013-04-19 17:20:23 |
|
| 2013-04-17 00:18:25 |
|
