Executive Summary
| Summary | |
|---|---|
| Title | krb5 security update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2013:0942 | First vendor Publication | 2013-06-12 |
| Vendor | RedHat | Last vendor Modification | 2013-06-12 |
| 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:N/C:N/I:N/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 5 | Attack Range | Network |
| Cvss Impact Score | 2.9 | Attack Complexity | Low |
| Cvss Expoit Score | 10 | 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 5 and 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: RHEL Desktop Workstation (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 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). It was found that kadmind's kpasswd service did not perform any validation on incoming network packets, causing it to reply to all requests. A remote attacker could use this flaw to send spoofed packets to a kpasswd service that appear to come from kadmind on a different server, causing the services to keep replying packets to each other, consuming network bandwidth and CPU. (CVE-2002-2443) 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 and kadmind daemons 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/): 962531 - CVE-2002-2443 krb5: UDP ping-pong flaw in kpasswd |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2013-0942.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-20 | Improper Input Validation |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:18463 | |||
| Oval ID: | oval:org.mitre.oval:def:18463 | ||
| Title: | DSA-2701-1 krb5 - denial of service | ||
| Description: | It was discovered that the kpasswd service running on UDP port 464 could respond to response packets, creating a packet loop and a denial of service condition. | ||
| Family: | unix | Class: | patch |
| Reference(s): | DSA-2701-1 CVE-2002-2443 | Version: | 8 |
| Platform(s): | Debian GNU/Linux 6.0 Debian GNU/Linux 7 Debian GNU/kFreeBSD 6.0 Debian GNU/kFreeBSD 7 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:21141 | |||
| Oval ID: | oval:org.mitre.oval:def:21141 | ||
| Title: | RHSA-2013:0942: krb5 security update (Moderate) | ||
| Description: | schpw.c in the kpasswd service in kadmind in MIT Kerberos 5 (aka krb5) before 1.11.3 does not properly validate UDP packets before sending responses, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged packet that triggers a communication loop, as demonstrated by krb_pingpong.nasl, a related issue to CVE-1999-0103. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2013:0942-01 CESA-2013:0942 CVE-2002-2443 | Version: | 4 |
| Platform(s): | Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 5 CentOS Linux 5 CentOS Linux 6 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:25824 | |||
| Oval ID: | oval:org.mitre.oval:def:25824 | ||
| Title: | SUSE-SU-2013:1190-1 -- Security update for krb5 | ||
| Description: | This krb5 update fixes a security issue. * kpasswd UDP ping-pong (bug#825985 / CVE-2002-2443) Security Issue reference: * CVE-2002-2443 <http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-2443 > | ||
| Family: | unix | Class: | patch |
| Reference(s): | SUSE-SU-2013:1190-1 CVE-2002-2443 | Version: | 3 |
| Platform(s): | SUSE Linux Enterprise Server 11 SUSE Linux Enterprise Server 10 SUSE Linux Enterprise Desktop 11 SUSE Linux Enterprise Desktop 10 | Product(s): | krb5 |
| Definition Synopsis: | |||
| |||
CPE : Common Platform Enumeration
Snort® IPS/IDS
| Date | Description |
|---|---|
| 2019-09-24 | MIT Kerberos kpasswd UDP denial of service attempt RuleID : 51212 - Revision : 1 - Type : SERVER-OTHER |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2015-11-13 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-2810-1.nasl - Type : ACT_GATHER_INFO |
| 2015-01-19 | Name : The remote Solaris system is missing a security patch for third-party software. File : solaris11_kerberos_20130924.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 |
| 2014-11-08 | Name : The remote Red Hat host is missing a security update. File : redhat-RHSA-2013-1076.nasl - Type : ACT_GATHER_INFO |
| 2014-06-13 | Name : The remote openSUSE host is missing a security update. File : openSUSE-2013-546.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-2013-208.nasl - Type : ACT_GATHER_INFO |
| 2013-07-14 | Name : The remote SuSE 10 host is missing a security-related patch. File : suse_krb5-8631.nasl - Type : ACT_GATHER_INFO |
| 2013-07-14 | Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_krb5-130626.nasl - Type : ACT_GATHER_INFO |
| 2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2013-0942.nasl - Type : ACT_GATHER_INFO |
| 2013-06-14 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20130612_krb5_on_SL5_x.nasl - Type : ACT_GATHER_INFO |
| 2013-06-14 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2013-0942.nasl - Type : ACT_GATHER_INFO |
| 2013-06-13 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2013-0942.nasl - Type : ACT_GATHER_INFO |
| 2013-06-04 | Name : The remote FreeBSD host is missing a security-related update. File : freebsd_pkg_e3f64457cccd11e2af76206a8a720317.nasl - Type : ACT_GATHER_INFO |
| 2013-06-03 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-2701.nasl - Type : ACT_GATHER_INFO |
| 2013-05-26 | Name : The remote Fedora host is missing a security update. File : fedora_2013-8113.nasl - Type : ACT_GATHER_INFO |
| 2013-05-24 | Name : The remote Fedora host is missing a security update. File : fedora_2013-8219.nasl - Type : ACT_GATHER_INFO |
| 2013-05-22 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2013-166.nasl - Type : ACT_GATHER_INFO |
| 2013-05-22 | Name : The remote Fedora host is missing a security update. File : fedora_2013-8212.nasl - Type : ACT_GATHER_INFO |
| 2001-03-25 | Name : The remote service is vulnerable to a denial of service attack. File : krb_pingpong.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:57:17 |
|
| 2013-06-12 21:18:27 |
|
