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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1516 Cisco Firepower Threat Defense Software 2 May 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Firepower Threat Defense Software Publisher: Cisco Systems Operating System: Cisco Impact/Access: Root Compromise -- Existing Account Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-1699 CVE-2019-1709 CVE-2019-1703 CVE-2019-1696 CVE-2019-1704 CVE-2018-15462 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-ftd-cmd-inject https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-cmd-inj https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-dos https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-smb-snort https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-firepower-dos Comment: This bulletin contains five (5) security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Firepower Threat Defense Software Command Injection Vulnerability Priority: Medium Advisory ID: cisco-sa-20190501-ftd-cmd-inject First Published: 2019 May 1 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvm14217CSCvn33026 CVE-2019-1699 CWE-78 CVSS Score: 6.7 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X Summary o A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to perform a command injection attack. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by injecting commands into arguments for a specific command. A successful exploit could allow the attacker to execute commands with root privileges. 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-20190501-ftd-cmd-inject Affected Products o Vulnerable Products This vulnerability affects Cisco products that are running a vulnerable release of Cisco FTD Software. For information about which Cisco FTD Software releases are vulnerable, see the Fixed Software section of this advisory. Determining the Cisco FTD Software Release To determine which Cisco FTD Software release is running on a device, administrators can log in to the device, use the show version command in the CLI, and refer to the output of the command. The following example shows the output of the command for a device that is running Cisco FTD Software Release 6.2.0: > show version ---------------------[ ftd ]--------------------- Model : Cisco ASA5525-X Threat Defense (75) Version 6.2.0 (Build 362) UUID : 2849ba3c-ecb8-11e6-98ca-b9fc2975893c Rules update version : 2017-03-15-001-vrt VDB version : 279 ---------------------------------------------------- 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 Cisco Adaptive Security Appliance (ASA) Software. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o Cisco has released free software updates that address the vulnerabilities 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 table(s), the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerability described in this advisory and the release that includes the fix for this vulnerability. Cisco FTD Software Cisco FTD Software Release Recommended Release for This Vulnerability 6.0 6.2.3.12 6.0.1 6.2.3.12 6.1.0 6.2.3.12 6.2.0 6.2.3.12 6.2.1 6.2.3.12 6.2.2 6.2.3.12 6.2.3 6.2.3.12 6.3.0 Not vulnerable 6.4.0 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. 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 Cisco would like to thank Lubomir Vesely of Tower Street for reporting this vulnerability. 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. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-ftd-cmd-inject Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2019-May-01 | +----------+---------------------------+----------+--------+--------------+ - -------------------------------------------------------------------------------- Cisco Firepower Threat Defense Software Command Injection Vulnerability Priority: Medium Advisory ID: cisco-sa-20190501-frpwr-cmd-inj First Published: 2019 May 1 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvm14267 CVE-2019-1709 CWE-78 CVSS Score: 6.0 AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H/E:X/RL:X/RC:X Summary o A vulnerability in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to perform a command injection attack. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by injecting commands into arguments for a specific command. A successful exploit could allow the attacker to execute commands with root privileges. 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-20190501-frpwr-cmd-inj Affected Products o Vulnerable Products This vulnerability affects Cisco products that are running a vulnerable release of Cisco FTD Software. For information about which Cisco FTD Software releases are vulnerable, see the Fixed Software section of this advisory. Determining the Cisco FTD Software Release To determine which Cisco FTD Software release is running on a device, administrators can log in to the device, use the show version command in the CLI, and refer to the output of the command. The following example shows the output of the command for a device that is running Cisco FTD Software Release 6.2.0: > show version ---------------------[ ftd ]--------------------- Model : Cisco ASA5525-X Threat Defense (75) Version 6.2.0 (Build 362) UUID : 2849ba3c-ecb8-11e6-98ca-b9fc2975893c Rules update version : 2017-03-15-001-vrt VDB version : 279 ---------------------------------------------------- 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 Cisco Adaptive Security Appliance (ASA) Software. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o Cisco has released free software updates that address the vulnerabilities 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 table(s), the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerability described in this advisory and the release that includes the fix for this vulnerability. Cisco FTD Software Cisco FTD Software Release Recommended Release for This Vulnerability 6.0 6.2.3.12 6.0.1 6.2.3.12 6.1.0 6.2.3.12 6.2.0 6.2.3.12 6.2.1 6.2.3.12 6.2.2 6.2.3.12 6.2.3 6.2.3.12 6.3.0 Not vulnerable 6.4.0 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. 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. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-cmd-inj Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2019-May-01 | +----------+---------------------------+----------+--------+--------------+ - -------------------------------------------------------------------------------- Cisco Firepower Threat Defense Software Packet Processing Denial of Service Vulnerability Priority: High Advisory ID: cisco-sa-20190501-frpwr-dos First Published: 2019 May 1 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvj62504 CVE-2019-1703 CWE-400 CVSS Score: 8.6 AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X Summary o A vulnerability in the internal packet-processing functionality of Cisco Firepower Threat Defense (FTD) Software for the Cisco Firepower 2100 Series could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to a logic error, which may prevent ingress buffers from being replenished under specific traffic conditions. An attacker could exploit this vulnerability by sending a series of crafted packets to an affected device. A successful exploit could allow the attacker to consume all input buffers, which are shared between all interfaces, leading to a queue wedge condition in all active interfaces. This situation would cause an affected device to stop processing any incoming traffic and result in a DoS condition until the device is reloaded manually. 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-20190501-frpwr-dos Affected Products o Vulnerable Products This vulnerability affects Cisco Firepower 2100 Series devices that are running a vulnerable release of Cisco FTD Software. For information about which Cisco FTD Software releases are vulnerable, see the Fixed Software section of this advisory. Determining the Cisco FTD Software Release To determine which Cisco FTD Software release is running on a device, administrators can log in to the device and use the show version command in the CLI. The following example shows the output of the command for a device that is running Cisco FTD Software Release 6.2.2: > show version ------------------[ ftd ]----------------------- Model : Cisco Firepower 2130 Threat Defense (77) Version 6.2.2 (Build 81) UUID : 0cd3595a-7efa-11e7-aaa1-ee3989c8bf25 Rules update version : 2017-12-20-001-vrt VDB version : 290 ---------------------------------------------------- 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: Adaptive Security Appliance (ASA) 5500-X Series with FirePOWER Services ASA Software Firepower Management Center Firepower 4100 Series FirePOWER 7000 Series Appliances FirePOWER 8000 Series Appliances Firepower 9300 Security Appliances FirePOWER Threat Defense for Integrated Services Routers (ISRs) 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 ensure a complete upgrade solution, customers should consider that this advisory is part of a collection that includes the following advisories: cisco-sa-20190501-asa-csrf : Cisco Adaptive Security Appliance Software Cross-Site Request Forgery Vulnerability cisco-sa-20190501-asa-frpwrtd-dos : Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software TCP Timer Handling Denial of Service Vulnerability cisco-sa-20190501-asa-ftd-dos : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software WebVPN Denial of Service Vulnerability cisco-sa-20190501-asa-ftd-entropy : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Low-Entropy Keys Vulnerability cisco-sa-20190501-asa-ftd-ike-dos : Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software MOBIKE Denial of Service Vulnerability cisco-sa-20190501-asaftd-saml-vpn : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software VPN SAML Authentication Bypass Vulnerability cisco-sa-20190501-asa-ipsec-dos : Cisco Adaptive Security Appliance Software IPsec Denial of Service Vulnerability cisco-sa-20190501-firepower-dos : Cisco Firepower Threat Defense Software TCP Ingress Handler Denial of Service Vulnerability cisco-sa-20190501-frpwr-dos: Cisco Firepower Threat Defense Software Packet Processing Denial of Service Vulnerability cisco-sa-20190501-frpwr-smb-snort : Cisco Firepower Threat Defense Software SMB Protocol Preprocessor Detection Engine Denial of Service Vulnerabilities cisco-sa-20190501-sd-cpu-dos : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software WebVPN Denial of Service Vulnerability In the following table(s), the left column lists Cisco software releases. The center column indicates whether a release is affected by the vulnerability described in this advisory and the release that includes the fix for this vulnerability. The right column indicates whether a release is affected by all the vulnerabilities described in this collection of advisories and which release includes fixes for those vulnerabilities. Cisco FTD Software Cisco FTD Recommended Release Recommended Release for All Software for This Vulnerabilities Described in the Release Vulnerability Collection of Advisories 6.0 Not applicable ^1 6.2.3.12 6.0.1 Not applicable ^1 6.2.3.12 6.1.0 Not applicable ^1 6.2.3.12 6.2.0 Not applicable ^1 6.2.3.12 6.2.1 6.2.3.12 6.2.3.12 6.2.2 6.2.3.12 6.2.3.12 6.2.3 6.2.3.12 6.2.3.12 6.3.0 Not vulnerable 6.3.0.3 (target week of 6 May 2019) 6.4.0 Not vulnerable Not vulnerable ^ 1 Cisco FTD Software Release 6.2.1 is the first release that supports the Cisco Firepower 2100 Series. 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. 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. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-dos Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2019-May-01 | +----------+---------------------------+----------+--------+--------------+ - -------------------------------------------------------------------------------- Cisco Firepower Threat Defense Software SMB Protocol Preprocessor Detection Engine Denial of Service Vulnerabilities Priority: High Advisory ID: cisco-sa-20190501-frpwr-smb-snort First Published: 2019 May 1 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvj83264CSCvj91418 CVE-2019-1696 CVE-2019-1704 CWE-400 CVSS Score: 7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:X/RL:X/RC:X Summary o Multiple vulnerabilities in the Server Message Block (SMB) Protocol preprocessor detection engine for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, adjacent or remote attacker to cause a denial of service (DoS) condition. For more information about these vulnerabilities, see the Details section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-smb-snort Affected Products o Vulnerable Products These vulnerabilities affect the following Cisco products that are running a vulnerable release of Cisco FTD Software: 3000 Series Industrial Security Appliances (ISAs) Adaptive Security Appliance (ASA) 5500-X Series Firewalls ASA 5500-X Series with FirePOWER Services Advanced Malware Protection (AMP) for Networks for FirePOWER 7000 Series Appliances AMP for Networks for FirePOWER 8000 Series Appliances Firepower 2100 Series Firepower 4100 Series FirePOWER 7000 Series Appliances FirePOWER 8000 Series Appliances Firepower 9300 Security Appliances Firepower Threat Defense for Integrated Services Routers (ISRs) FTD Virtual (FTDv) Next-Generation Intrusion Prevention System (NGIPS) For information about which Cisco FTD Software releases are vulnerable, see the Fixed Software section of this advisory. These vulnerabilities may also affect the open-source Snort project. For more information, see the Snort website . Determining the Cisco FTD Software Release To determine which Cisco FTD Software release is running on a device, administrators can log in to the device, use the show version command in the CLI, and refer to the output of the command. The following example shows the output of the command for a device that is running Cisco FTD Software Release 6.2.0: > show version ---------------------[ ftd ]--------------------- Model : Cisco ASA5525-X Threat Defense (75) Version 6.2.0 (Build 362) UUID : 2849ba3c-ecb8-11e6-98ca-b9fc2975893c Rules update version : 2017-03-15-001-vrt VDB version : 279 ---------------------------------------------------- Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by these vulnerabilities. Cisco has confirmed that these vulnerabilities do not affect the following Cisco products: Adaptive Security Appliance (ASA) Software Firepower Management Center Meraki MX Security Appliances Details o Two vulnerabilities in the SMB Protocol preprocessor detection engine for Cisco FTD Software could allow an adjacent or remote attacker to cause a DoS condition. The vulnerabilities are not dependent on one another; exploitation of one of the vulnerabilities is not required to exploit the other vulnerability. Details about the vulnerabilities are as follows. Cisco Firepower Threat Defense Software SMB Protocol Preprocessor Detection Engine Low System Memory Denial of Service Vulnerability A vulnerability in the SMB Protocol preprocessor detection engine for Cisco FTD Software could allow an unauthenticated, adjacent attacker to cause the device to run low on system memory, which may cause the device to stop forwarding traffic. A manual reload of the device may be required to clear the condition. The vulnerability is due to incorrect SMB ingress packet processing for specific SMB packet types. An attacker could exploit this vulnerability by sending a steady stream of crafted SMB packets to the targeted device from the local subnet. A successful exploit could allow the attacker to cause the device to run low on system memory, which could prevent the Snort process from forwarding traffic. This vulnerability can be exploited using IPv4 or IPv6 with either SMB Version 2 (SMBv2) or SMB Version 3 (SMBv3) network traffic. The Common Vulnerabilities and Exposures (CVE) ID for this vulnerability is: CVE-2019-1696 The Security Impact Rating (SIR) for this vulnerability is: High Cisco Firepower Threat Defense Software SMB Protocol Preprocessor Detection Engine Denial of Service Vulnerability A vulnerability in the SMB Protocol preprocessor detection engine for Cisco FTD Software could allow an unauthenticated, remote attacker to cause the Snort process to unexpectedly restart, resulting in a denial of service (DoS) condition. The vulnerability is due to incorrect SMB ingress packet processing for specific SMB packet types. An attacker could exploit this vulnerability by sending a crafted SMB connection to the targeted device. A successful exploit could allow the attacker to cause the Snort process to crash. This vulnerability can be exploited using IPv4 or IPv6 with either SMBv2 or SMBv3 network traffic. The CVE ID for this vulnerability is: CVE-2019-1704 The SIR for this vulnerability is: High Indicators of Compromise o The Cisco Firepower Threat Defense Software SMB Protocol Preprocessor Detection Engine Low System Memory Denial of Service Vulnerability could cause the device to run low on system memory, which could cause the Snort process to restart unexpectedly. If the following error log is observed, customers are advised to contact the Cisco Technical Assistance Center (TAC) to determine whether the vulnerability has been exploited on the device. Firepower-module1 kernel: [1111040.969265] snort invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0 Workarounds o There are no workarounds that address these vulnerabilities. Fixed Software o Cisco has released free software updates that address the vulnerabilities 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 ensure a complete upgrade solution, customers should consider that this advisory is part of a collection that includes the following advisories: cisco-sa-20190501-asa-csrf : Cisco Adaptive Security Appliance Software Cross-Site Request Forgery Vulnerability cisco-sa-20190501-asa-frpwrtd-dos : Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software TCP Timer Handling Denial of Service Vulnerability cisco-sa-20190501-asa-ftd-dos : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software WebVPN Denial of Service Vulnerability cisco-sa-20190501-asa-ftd-entropy : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Low-Entropy Keys Vulnerability cisco-sa-20190501-asa-ftd-ike-dos : Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software MOBIKE Denial of Service Vulnerability cisco-sa-20190501-asaftd-saml-vpn : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software VPN SAML Authentication Bypass Vulnerability cisco-sa-20190501-asa-ipsec-dos : Cisco Adaptive Security Appliance Software IPsec Denial of Service Vulnerability cisco-sa-20190501-firepower-dos : Cisco Firepower Threat Defense Software TCP Ingress Handler Denial of Service Vulnerability cisco-sa-20190501-frpwr-dos: Cisco Firepower Threat Defense Software Packet Processing Denial of Service Vulnerability cisco-sa-20190501-frpwr-smb-snort : Cisco Firepower Threat Defense Software SMB Protocol Preprocessor Detection Engine Denial of Service Vulnerabilities cisco-sa-20190501-sd-cpu-dos : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software WebVPN Denial of Service Vulnerability In the following table(s), the left column lists Cisco software releases. The center column indicates whether a release is affected by the vulnerabilities described in this advisory and the release that includes the fix for these vulnerabilities. The right column indicates whether a release is affected by all the vulnerabilities described in this collection of advisories and which release includes fixes for those vulnerabilities. Cisco FTD Software Cisco FTD Recommended Release Recommended Release for All Software for These Vulnerabilities Described in the Release Vulnerabilities Collection of Advisories 6.0 6.2.3.12 6.2.3.12 6.0.1 6.2.3.12 6.2.3.12 6.1.0 6.2.3.12 6.2.3.12 6.2.0 6.2.3.12 6.2.3.12 6.2.1 6.2.3.12 6.2.3.12 6.2.2 6.2.3.12 6.2.3.12 6.2.3 6.2.3.12 6.2.3.12 6.3.0 Not vulnerable 6.3.0.3 (target week of 6 May 2019) 6.4.0 Not vulnerable 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. The Snort version that is installed depends on the FMC release. 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 vulnerabilities that are described in this advisory. Source o These vulnerabilities were found during the resolution of a Cisco TAC support case. 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. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-frpwr-smb-snort Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2019-May-01 | +----------+---------------------------+----------+--------+--------------+ - -------------------------------------------------------------------------------- Cisco Firepower Threat Defense Software TCP Ingress Handler Denial of Service Vulnerability Priority: High Advisory ID: cisco-sa-20190501-firepower-dos First Published: 2019 May 1 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvf95761CSCvg76064CSCvk35736CSCvn51149 CVE-2018-15462 CWE-399 CVSS Score: 8.6 AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X Summary o A vulnerability in the TCP ingress handler for the data interfaces that are configured with management access to Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an increase in CPU and memory usage, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient ingress TCP rate limiting for TCP ports 22 (SSH) and 443 (HTTPS). An attacker could exploit this vulnerability by sending a crafted, steady stream of TCP traffic to port 22 or 443 on the data interfaces that are configured with management access to the affected 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-20190501-firepower-dos Affected Products o Vulnerable Products This vulnerability affects the following Cisco products that are running a vulnerable release of Cisco FTD Software: 3000 Series Industrial Security Appliances (ISAs) Adaptive Security Appliance (ASA) 5500-X Series Firewalls Firepower 2100 Series Firepower 4100 Series Firepower 9300 Security Appliances FTD Virtual (FTDv) For information about which Cisco FTD Software releases are vulnerable, see the Fixed Software section of this advisory. Determining the Cisco FTD Software Release To determine which Cisco FTD Software release is running on a device, administrators can log in to the device, use the show version command in the CLI, and refer to the output of the command. The following example shows the output of the command for a device that is running Cisco FTD Software Release 6.2.0: > show version ---------------------[ ftd ]--------------------- Model : Cisco ASA5525-X Threat Defense (75) Version 6.2.0 (Build 362) UUID : 2849ba3c-ecb8-11e6-98ca-b9fc2975893c Rules update version : 2017-03-15-001-vrt VDB version : 279 ---------------------------------------------------- Determining the SSH and HTTP Service Configurations In the following table, the left column lists the Cisco FTD features that may be vulnerable. The right column indicates the basic configuration for the feature from the show running-config CLI command, if it can be determined. If the device is configured with any of these features, the device is affected by the vulnerability described in this advisory. Cisco FTD Feature Vulnerable Configuration HTTP service enabled http server enable <port> ^1,2 http <remote_ip_address> <remote_subnet_mask> <interface_name> SSH service enabled ^ ssh <remote_ip_address> <remote_subnet_mask> 1,3 <interface_name> ^ 1 The device is vulnerable only from an IP address in the configured HTTP or SSH command range. ^ 2 All devices configured for FDM access have the HTTP service enabled. ^ 3 All devices that are managed by FMC have the SSH service enabled. 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 Cisco Adaptive Security Appliance (ASA) Software. 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 ensure a complete upgrade solution, customers should consider that this advisory is part of a collection that includes the following advisories: cisco-sa-20190501-asa-csrf : Cisco Adaptive Security Appliance Software Cross-Site Request Forgery Vulnerability cisco-sa-20190501-asa-frpwrtd-dos : Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software TCP Timer Handling Denial of Service Vulnerability cisco-sa-20190501-asa-ftd-dos : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software WebVPN Denial of Service Vulnerability cisco-sa-20190501-asa-ftd-entropy : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Low-Entropy Keys Vulnerability cisco-sa-20190501-asa-ftd-ike-dos : Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software MOBIKE Denial of Service Vulnerability cisco-sa-20190501-asaftd-saml-vpn : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software VPN SAML Authentication Bypass Vulnerability cisco-sa-20190501-asa-ipsec-dos : Cisco Adaptive Security Appliance Software IPsec Denial of Service Vulnerability cisco-sa-20190501-firepower-dos : Cisco Firepower Threat Defense Software TCP Ingress Handler Denial of Service Vulnerability cisco-sa-20190501-frpwr-dos: Cisco Firepower Threat Defense Software Packet Processing Denial of Service Vulnerability cisco-sa-20190501-frpwr-smb-snort : Cisco Firepower Threat Defense Software SMB Protocol Preprocessor Detection Engine Denial of Service Vulnerabilities cisco-sa-20190501-sd-cpu-dos : Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software WebVPN Denial of Service Vulnerability In the following table(s), the left column lists Cisco software releases. The center column indicates whether a release is affected by the vulnerability described in this advisory and the release that includes the fix for this vulnerability. The right column indicates whether a release is affected by all the vulnerabilities described in this collection of advisories and which release includes fixes for those vulnerabilities. Cisco FTD Software Cisco FTD Recommended Release Recommended Release for All Software for This Vulnerabilities Described in the Release Vulnerability Collection of Advisories 6.0 6.2.3.12 6.2.3.12 6.0.1 6.2.3.12 6.2.3.12 6.1.0 6.2.3.12 6.2.3.12 6.2.0 6.2.3.12 6.2.3.12 6.2.1 6.2.3.12 6.2.3.12 6.2.2 6.2.3.12 6.2.3.12 6.2.3 6.2.3.12 6.2.3.12 6.3.0 6.3.0.3 (target week 6.3.0.3 (target week of 6 May 2019) of 6 May 2019) 6.4.0 Not vulnerable 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. 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 the resolution of a Cisco TAC support case. 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. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-firepower-dos Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2019-May-01 | +----------+---------------------------+----------+--------+--------------+ - --------------------------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. 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