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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3712.2 Cisco FTD, FMC, and FXOS Software Pluggable Authentication Module Denial of Service Vulnerability 10 October 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco FTD, FMC, and FXOS Software Pluggable Authentication Module Publisher: Cisco Systems Operating System: Network Appliance Impact/Access: Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-12700 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-ftd-fpmc-dos Revision History: October 10 2019: Updated first fixed release for FXOS 2.2 and earlier. October 3 2019: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco FTD, FMC, and FXOS Software Pluggable Authentication Module Denial of Service Vulnerability Priority: High Advisory ID: cisco-sa-20191002-ftd-fpmc-dos First Published: 2019 October 2 16:00 GMT Last Updated: 2019 October 9 14:08 GMT Version 1.1: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvm92401CSCvn83385 CVE-2019-12700 CWE-400 CVSS Score: 7.7 AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X Summary o A vulnerability in the configuration of the Pluggable Authentication Module (PAM) used in Cisco Firepower Threat Defense (FTD) Software, Cisco Firepower Management Center (FMC) Software, and Cisco FXOS Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper resource management in the context of user session management. An attacker could exploit this vulnerability by connecting to an affected system and performing many simultaneous successful Secure Shell (SSH) logins. A successful exploit could allow the attacker to exhaust system resources and cause the device to reload, resulting in a DoS condition. To exploit this vulnerability, the attacker needs valid user credentials on the system. 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-20191002-ftd-fpmc-dos Affected Products o Vulnerable Products This vulnerability affects Cisco FTD Software, FMC Software, and FXOS Software running on any Cisco product. For information about which Cisco FTD Software, FMC Software, and FXOS 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. 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. In the following tables, the left column lists releases of Cisco FTD Software, FMC Software, or FXOS Software. The right 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. Cisco FTD Software and FMC Software Cisco FTD Software and FMC Software Running on Firepower 1000/2100 Series Cisco FTD/FMC Software Release (Firepower First Fixed Release for This 1000/2100 Series) Vulnerability 6.1.0 and earlier 6.2.3.14 6.2.0 6.2.3.14 6.2.1 6.2.3.14 6.2.2 6.2.3.14 6.2.3 6.2.3.14 6.3.0 Not vulnerable 6.4.0 Not vulnerable 6.5.0 Not vulnerable Cisco FTD Software and FMC Software Running on Any Other Platform Cisco FTD/FMC Software Release (Other First Fixed Release for This Platforms) Vulnerability 6.1.0 and earlier 6.2.2.5 6.2.0 6.2.2.5 6.2.1 6.2.2.5 6.2.2 6.2.2.5 6.2.3 6.2.3.7 6.3.0 Not vulnerable 6.4.0 Not vulnerable 6.5.0 Not vulnerable To upgrade to a fixed release of Cisco FTD Software, customers can do one of the following: For devices that are managed by using Cisco Firepower Management Center (FMC), use the FMC interface to install the upgrade. After installation is complete, reapply the access control policy. For devices that are managed by using Cisco Firepower Device Manager (FDM), use the FDM interface to install the upgrade. After installation is complete, reapply the access control policy. Cisco FXOS Software Cisco FXOS Software Release First Fixed Release for This Vulnerability 2.2 and earlier 2.2.2.101 2.3 2.3.1.155 2.4 2.6.1.131 2.6 2.6.1.131 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 by Sanmith Prakash of Cisco 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. Action Links for This Advisory o Snort Rule 19559 URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20191002-ftd-fpmc-dos Revision History o +---------+-------------------------+----------+--------+-----------------+ | Version | Description | Section | Status | Date | +---------+-------------------------+----------+--------+-----------------+ | | Updated first fixed | Fixed | | | | 1.1 | release for FXOS 2.2 | Software | Final | 2019-October-09 | | | and earlier. | | | | +---------+-------------------------+----------+--------+-----------------+ | 1.0 | Initial public release. | - | Final | 2019-October-02 | +---------+-------------------------+----------+--------+-----------------+ - --------------------------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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