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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0834 IBM Security Bulletin: This Power System update is being released to address CVE 2019-6260 14 March 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Power 9 Systems Publisher: IBM Operating System: Network Appliance Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-6260 Original Bulletin: http://www.ibm.com/support/docview.wss?uid=ibm10869130 - --------------------------BEGIN INCLUDED TEXT-------------------- This Power System update is being released to address CVE 2019-6260 Product: Power 9 Systems Software version: OP910, OP920 Operating system(s): BMC, Firmware Reference #: 0869130 Security Bulletin Summary Power9: In response to an arbitrary access to the BMC's physical address space from the host, a new Power System firmware update is being released to address Common Vulnerabilities and Exposures issue number CVE 2019-6260. IBM engineers discovered that configuration of the Baseboard Management Controller (BMC) hardware features potentially left it open to unauthenticated compromise from the host and from the BMC console. It could allow the host full access to BMC memory and flash, violating the principle of BMC and host being in separate trust domains. Vulnerability Details CVEID: CVE 2019-6260 DESCRIPTION: The ASPEED AST2400 and AST2500 Baseboard Management Controller (BMC) hardware and firmware implement Advanced High-performance Bus (AHB) bridges, which allow arbitrary read and write access to the BMC's physical address space from the host (or from the network in unusual cases where the BMC console uart is attached to a serial concentrator). This CVE applies to the specific cases of iLPC2AHB bridge Pt I, iLPC2AHB bridge Pt II, PCIe VGA P2A bridge, DMA from/to arbitrary BMC memory via X-DMA, UART-based SoC Debug interface, LPC2AHB bridge, PCIe BMC P2A bridge, and Watchdog setup. CVSS Base Score: 6.7 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 155952 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H) The firmware update can be obtained from FixCentral by specifying the Product and fix level as specified in this Remediation section. Affected Products and Versions P9 OpenPOWER releases OP910 and OP920 are affected. Remediation/Fixes Customers with the products below running OP910, install the OP910.30 1) Power System AC922 (8335-GTG) Customers with the products below running OP920, install the OP920.10 1) IBM Power System AC922 (8335-GTH) 2) IBM Power System AC922 (8335-GTX) 3) IBM Power System LC921 (9006-12P) 4) IBM Power System LC922 (9006-22P) Reference Complete CVSS v3 Guide On-line Calculator v3 Related Information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog *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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXInpnmaOgq3Tt24GAQiuiA//Yq80w/sKIXWLw34ClHEDTDAUp89xPguF EEBTBJlepEcu4C0Mx9nSmzLnjIEwQE+6JzmuLzKJJheVXWX+EPs7Oet96tVSwKIJ I8PW1+RbgayqFxhQnn8C2volL07KNTMaAiuoDwoYGdIuKoPWBFAfPHABkEUcSBA6 YriV6i0/7ONX/GHNVnwsrWzZ2XT4sH4dJUu7gobDPalWWPAjijL0ItIgzEOxadCh qovTyCgl7kdE2ZYwjvMEmipIG90r/o7iu0olzDDq0rw4ht/8Ds6/l5ptmtINneQ4 Zg418fEFPmUfTOvAKUIrtEZrgU7sk2lLo1eQeuGRnWHswO/pLs+DigZ56TRbe4gJ 6wOatt5L5vMLbM95kwWmzChyzZ+ZTZiIWeCzncULRW+p1NuDYKVcg0o461HvQkdr 5oGDfXoL47FxlCJnl97Fjc01OAzyo3QbLUDfsJ9D7xZMte5ao5joKvE4xsKM0iLC kbOmTPmxztQPyV3XEK9JlJvVqGvOBXJCBmQvI4r6ArX3iyNc7OtIoU2yHY3rqz5a JOT6bY/2qwJ88t15v6Ity8VjHhbC+0ctHJmIeJ/fGZzlgwDSXcpxG6Q5qkR8tdCy +sNF/+IbEjWsp0f1L/Fm/CVIG1XwyENw+MvJ05K+J82SndqKUjxqpte4vymkg+rh Ip9KjlXBHrk= =epag -----END PGP SIGNATURE-----