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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3198.5 libssh Authentication Bypass Vulnerability Affecting Cisco Products: October 2018 6 November 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libssh in Cisco Products Publisher: Cisco Systems Operating System: Cisco Impact/Access: Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-10933 Reference: ESB-2018.3185 ESB-2018.3171 ESB-2018.3135 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181019-libssh Revision History: November 6 2018: Updated the lists of products under investigation, vulnerable products, and products confirmed not vulnerable. October 26 2018: Updated the lists of products under investigation, vulnerable products, and products confirmed not vulnerable. October 25 2018: Updated the lists of products under investigation, vulnerable products, and products confirmed not vulnerable. October 24 2018: Updated the lists of products under investigation, vulnerable products, and products confirmed not vulnerable. October 22 2018: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Security Advisory libssh Authentication Bypass Vulnerability Affecting Cisco Products: October 2018 Priority: Critical Advisory ID: cisco-sa-20181019-libssh First Published: 2018 October 19 16:00 GMT Last Updated: 2018 October 25 16:11 GMT Version 1.4: Interim Workarounds: No workarounds available Cisco Bug ID: CVE-2018-10933 CWE-287 Summary o A vulnerability in libssh could allow an unauthenticated, remote attacker to bypass authentication on a targeted system. The vulnerability is due to improper authentication operations by the server-side state machine of the affected software. An attacker could exploit this vulnerability by presenting a SSH2_MSG_USERAUTH_SUCCESS message to a targeted system. A successful exploit could allow the attacker to bypass authentication and gain unauthorized access to a targeted system. This advisory will be updated as additional information becomes available. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20181019-libssh Affected Products * Cisco investigated its product line to determine which products and services may be affected by this vulnerability. The Vulnerable Products section will include Cisco bug IDs for each affected product or service. The bugs are accessible through the Cisco Bug Search Tool and contain additional platform-specific information, including workarounds (if available) and fixed software releases. Any product not listed in the Vulnerable Products section of this advisory is to be considered not vulnerable. Vulnerable Products Cisco has investigated its product line and has determined that no products or services are known to be affected by this vulnerability. Products Confirmed Not Vulnerable Only products and services 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 products and services. All members of the product families in the following list are not considered to be affected by this vulnerability unless they are explicitly listed in the preceding Vulnerable Products section: Cable Modems + Cisco Stealthwatch Online Visibility Assessment Collaboration and Social Media + Cisco Webex Meetings Server Endpoint Clients and Client Software + Cisco Jabber Guest Network Application, Service, and Acceleration + Cisco Adaptive Security Appliance (ASA) Software + Cisco Cloud Services Platform 2100 Network and Content Security Devices + Cisco ASA Next-Generation Firewall Services + Cisco Content Security Management Appliance (SMA) + Cisco Email Security Appliance (ESA) + Cisco FireSIGHT System + Cisco Identity Services Engine (ISE) + Cisco Web Security Appliance (WSA) Network Management and Provisioning + Cisco Elastic Services Controller (ESC) + Cisco Enterprise Service Automation + Cisco FindIT Network Manager + Cisco NetFlow Generation Appliance + Cisco Network Analysis Module + Cisco Policy Suite + Cisco Prime Access Registrar + Cisco Prime Collaboration Provisioning + Cisco Prime Infrastructure + Cisco Prime Network Registrar Virtual Appliance + Cisco Prime Network Registrar + Cisco Prime Performance Manager + Cisco WAN Automation Engine (WAE) Routing and Switching - Enterprise and Service Provider + Cisco Application Policy Infrastructure Controller (APIC) + Cisco IOS XR Software for Cisco Network Convergence System 6000 Series Routers + Cisco IOS XR Software + Cisco Nexus 9000 Series Switches - Standalone, NX-OS mode + Cisco Nexus 9000 Series Switches Unified Computing + Cisco UCS Director Voice and Unified Communications Devices + Cisco IP Interoperability and Collaboration System (IPICS) + Cisco Management Heartbeat Server + Cisco Unified Communications Manager Session Management Edition + Cisco Unified Communications Manager + Cisco Unified Contact Center Express Video, Streaming, TelePresence, and Transcoding Devices + Cisco Cloud Object Storage + Cisco DCM Series D990x Digital Content Manager + Cisco VDS Recorder + Cisco VDS-TV Caching Nodes + Cisco VDS-TV Streamer + Cisco VDS-TV Vault + Cisco Video Distribution Suite for Internet Streaming (VDS-IS/CDS-IS) + Cisco Video Surveillance 4300E and 4500E High-Definition IP Cameras + Cisco Video Surveillance Media Server Wireless + Cisco Wireless LAN Controller Cisco Cloud Hosted Services + Cisco Cloud Email Security + Cisco Cloudlock + Cisco Energy Management + Cisco Smart Software Manager Satellite + Cisco Stealthwatch Learning Networks License + Cisco Umbrella + Cisco Virtual HetNet Workarounds o Any workarounds will be documented in the product-specific Cisco bugs, which are identified in the Vulnerable Products section of this advisory. Fixed Software o For information about fixed software releases, consult the Cisco bugs identified in the Vulnerable Products section of this advisory. 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 TAC or their contracted maintenance providers. 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 On October 16, 2018, libssh.org publicly disclosed this vulnerability in a security bulletin at the following link: https://www.libssh.org/2018/10/16/ libssh-0-8-4-and-0-7-6-security-and-bugfix-release/ 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 libssh Server-Side State Machine Unauthorized Access Vulnerability URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20181019-libssh Revision History o +---------+----------------------------+----------+---------+-----------------+ | Version | Description | Section | Status | Date | +---------+----------------------------+----------+---------+-----------------+ | | Updated the lists of | | | | | | products under | Affected | | | | 1.4 | investigation, vulnerable | Products | Interim | 2018-October-25 | | | products, and products | | | | | | confirmed not vulnerable. | | | | +---------+----------------------------+----------+---------+-----------------+ | | Updated the lists of | | | | | | products under | Affected | | | | 1.3 | investigation, vulnerable | Products | Interim | 2018-October-24 | | | products, and products | | | | | | confirmed not vulnerable. | | | | +---------+----------------------------+----------+---------+-----------------+ | | Updated the lists of | | | | | | products under | Affected | | | | 1.2 | investigation, vulnerable | Products | Interim | 2018-October-23 | | | products, and products | | | | | | confirmed not vulnerable. | | | | +---------+----------------------------+----------+---------+-----------------+ | | Updated the lists of | | | | | | products under | Affected | | | | 1.1 | investigation, vulnerable | Products | Interim | 2018-October-22 | | | products, and products | | | | | | confirmed not vulnerable. | | | | +---------+----------------------------+----------+---------+-----------------+ | 1.0 | Initial public release. | -- | Interim | 2018-October-19 | +---------+----------------------------+----------+---------+-----------------+ - ------------------------------------------------------------------------------- Legal Disclaimer o THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. CISCO EXPECTS TO UPDATE THIS DOCUMENT AS NEW INFORMATION BECOMES AVAILABLE. A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products. 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. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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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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