10 October 2019
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3279.2 Cisco Unified Computing System Fabric Interconnect root Privilege Escalation Vulnerability 10 October 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: UCS Fabric Interconnect Publisher: Cisco Systems Operating System: Cisco Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-1966 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-ucs-privescalation Revision History: October 10 2019: Updated the UCS fixed release table August 29 2019: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Unified Computing System Fabric Interconnect root Privilege Escalation Vulnerability Priority: High Advisory ID: cisco-sa-20190828-ucs-privescalation First Published: 2019 August 28 16:00 GMT Last Updated: 2019 October 8 14:45 GMT Version 1.1: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvm77243CSCvm80093 CVE-2019-1966 CWE-264 CVSS Score: 7.8 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X Summary o A vulnerability in a specific CLI command within the local management ( local-mgmt ) context for Cisco UCS Fabric Interconnect Software could allow an authenticated, local attacker to gain elevated privileges as the root user on an affected device. The vulnerability is due to extraneous subcommand options present for a specific CLI command within the local-mgmt context. An attacker could exploit this vulnerability by authenticating to an affected device, entering the local-mgmt context, and issuing a specific CLI command and submitting user input. A successful exploit could allow the attacker to execute arbitrary operating system commands as root on an affected device. The attacker would need to have valid user credentials for the device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20190828-ucs-privescalation This advisory is part of the August 2019 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication, which includes five Cisco Security Advisories that describe five vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: August 2019 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication . Affected Products o Vulnerable Products This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco UCS Fabric Interconnect Software: UCS 6200 Series Fabric Interconnects UCS 6300 Series Fabric Interconnects UCS 6400 Series Fabric Interconnects For information about which Cisco UCS Fabric Interconnect Software releases are vulnerable, see the Fixed Software section of this advisory. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. Cisco has confirmed that this vulnerability does not affect the following Cisco products: Firepower 2100 Series Firepower 4100 Series Firepower 9300 Security Appliances MDS 9000 Series Multilayer Switches Nexus 1000 Virtual Edge for VMware vSphere Nexus 1000V Switch for Microsoft Hyper-V Nexus 1000V Switch for VMware vSphere Nexus 3000 Series Switches Nexus 3500 Platform Switches Nexus 3600 Platform Switches Nexus 5500 Platform Switches Nexus 5600 Platform Switches Nexus 6000 Series Switches Nexus 7000 Series Switches Nexus 7700 Series Switches Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode Nexus 9000 Series Switches in standalone NX-OS mode Nexus 9500 R-Series Switching Platform Workarounds o There are no workarounds that address this vulnerability. Fixed Software o Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license: https://www.cisco.com/c/en/us/products/ end-user-license-agreement.html Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades. When considering software upgrades , customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page , to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers. Customers Without Service Contracts Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. Fixed Releases Customers are advised to upgrade to an appropriate release as indicated in the applicable table in this section. To help ensure a complete upgrade solution, customers should consider that this advisory is part of a bundled publication. The following page provides a complete list of bundle advisories: Cisco Event Response: August 2019 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication . In the following table(s), the left column lists releases of Cisco FXOS Software or Cisco NX-OS Software. The center column indicates whether a release is affected by the vulnerability described in this advisory and the first release that includes the fix for this vulnerability. The right column indicates whether a release is affected by all the vulnerabilities described in this bundle and which release includes fixes for those vulnerabilities. UCS 6200, 6300, and 6400 Series Fabric Interconnects: CSCvm77243 and CSCvm80093 Cisco NX-OS First Fixed Release First Fixed Release for All Software for This Vulnerabilities Described in the Bundle Release Vulnerability of Advisories Earlier than 3.2(3l) 3.2(3l) 3.2 3.2 3.2(3l) 3.2(3l) 4.0 4.0(2a) 4.0(4e) Additional Resources For help determining the best Cisco NX-OS Software release for a Cisco Nexus Switch, administrators can refer to the following Recommended Releases documents. If a security advisory recommends a later release, Cisco recommends following the advisory guidance. Cisco MDS Series Switches Cisco Nexus 1000V for VMware Switch Cisco Nexus 3000 Series and 3500 Series Switches Cisco Nexus 5000 Series Switches Cisco Nexus 5500 Platform Switches Cisco Nexus 6000 Series Switches Cisco Nexus 7000 Series Switches Cisco Nexus 9000 Series Switches Cisco Nexus 9000 Series ACI-Mode Switches For help determining the best Cisco NX-OS Software release for Cisco UCS, refer to the Recommended Releases documents in the release notes for the device. Exploitation and Public Announcements o The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. Source o This vulnerability was found during internal security testing. Cisco Security Vulnerability Policy o To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy . This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco. Related to This Advisory o Cisco Event Response: August 2019 Cisco FXOS and NX-OS Software Security Advisory Bundled Publication URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20190828-ucs-privescalation Revision History o +---------+------------------------+-----------+--------+-----------------+ | Version | Description | Section | Status | Date | +---------+------------------------+-----------+--------+-----------------+ | 1.1 | Updated the UCS fixed | Fixed | Final | 2019-October-08 | | | release table. | Software. | | | +---------+------------------------+-----------+--------+-----------------+ | 1.0 | Initial public | - | Final | 2019-August-28 | | | release. | | | | +---------+------------------------+-----------+--------+-----------------+ - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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