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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0797 IBM Security Bulletin: Vulnerability in Kerberos affects Power Hardware Management Console (CVE-2018-5730 CVE-2018-5729) 13 March 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Power HMC Publisher: IBM Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Denial of Service -- Existing Account Unauthorised Access -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-5730 CVE-2018-5729 Reference: ESB-2019.0545 ESB-2019.0242 ESB-2019.0230 ESB-2018.3904 Original Bulletin: http://www.ibm.com/support/docview.wss?uid=ibm10794455 - --------------------------BEGIN INCLUDED TEXT-------------------- Vulnerability in Kerberos affects Power Hardware Management Console ( CVE-2018-5730 CVE-2018-5729) Product: Power HMC Software version: All Versions Operating system(s): Platform Independent Reference #: 0794455 Security Bulletin Summary MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to circumvent a DN containership check by supplying both a "linkdn" and "containerdn" database argument, or by supplying a DN string which is a left extension of a container DN string but is not hierarchically within the container DN. CVE-2018-5729: null dereference in kadmind or DN container check bypass by supplying special crafted data Vulnerability Details CVEID: CVE-2018-5730 DESCRIPTION: MIT krb5 could allow a remote authenticated attacker to bypass security restrictions, caused by a flaw in the LDAP Kerberos database. By sending a specially-crafted request, an attacker could exploit this vulnerability to bypass DN container check. CVSS Base Score: 6.5 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 139970 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N) CVEID: CVE-2018-5729 DESCRIPTION: MIT krb5 is vulnerable to a denial of service, caused by a NULL pointer dereference in the LDAP Kerberos database. By sending specially-crafted data, a remote authenticated attacker could exploit this vulnerability to cause a denial of service. CVSS Base Score: 6.5 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 139969 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) Affected Products and Versions Power HMC V8.7.0.0 Power HMC V9.1.910.0 Remediation/Fixes Remediation/Fixes The following fixes are available on IBM Fix Central at: http://www-933.ibm.com /support/fixcentral/ +------------------------------+--------------------------+--------------------------+----------------------------------+ | Product | VRMF | APAR | Remediation/Fix | +------------------------------+--------------------------+--------------------------+----------------------------------+ | Power HMC | V8.8.7.2 PTF3 ppc | MB04193 | MH01807 | +------------------------------+--------------------------+--------------------------+----------------------------------+ | Power HMC | V8.8.7.2 PTF3 x86 | MB04192 | MH01806 | +------------------------------+--------------------------+--------------------------+----------------------------------+ | Power HMC | V9.1.921.0 PTF3 ppc | MB04195 | MH01809 | +------------------------------+--------------------------+--------------------------+----------------------------------+ | Power HMC | V9.1.921.0 PTF3 x86 | MB04194 | MH01808 | +------------------------------+--------------------------+--------------------------+----------------------------------+ Workarounds and Mitigations None Reference Complete CVSS v3 Guide On-line Calculator v3 Related Information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Change History Initial Version: 3 March 2019 *The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin. Disclaimer According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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