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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.3643.2 Cisco FXOS Software Vulnerabilities 26 October 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco FXOS Software Publisher: Cisco Systems Operating System: Cisco Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Root Compromise -- Existing Account Cross-site Request Forgery -- Remote/Unauthenticated Reduced Security -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2020-3459 CVE-2020-3457 CVE-2020-3456 CVE-2020-3455 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-cmdinj-pqZvmXCr https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxosfcm-csrf-uhO4e5BZ https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-sbbp-XTuPkYTn https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-cmdinj-b63rwKPm Revision History: October 26 2020: vendor updated cisco-sa-fxos-cmdinj-pqZvmXCr October 23 2020: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco FXOS Software Command Injection Vulnerability Priority: Medium Advisory ID: cisco-sa-fxos-cmdinj-pqZvmXCr First Published: 2020 October 21 16:00 GMT Last Updated: 2020 October 23 13:21 GMT Version 1.1: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvt69369CSCvt74037 CVE-2020-3457 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 Update from October 23, 2020: Cisco has become aware of a new Cisco Adaptive Security Appliance vulnerability that could affect the fixed releases recommended for code trains 9.13 and 9.14 in the Fixed Software section of this advisory. See the Cisco Adaptive Security Appliance Software SSL/TLS Denial of Service Vulnerability for additional information. A vulnerability in the CLI of Cisco FXOS Software could allow an authenticated, local attacker to inject arbitrary commands that are executed with root privileges. The vulnerability is due to insufficient input validation of commands supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. A successful exploit could allow the attacker to execute commands on the underlying operating system 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-fxos-cmdinj-pqZvmXCr Affected Products o Vulnerable Products At the time of publication, this vulnerability affected Cisco FXOS Software when running on the following platforms: Firepower 1000 Series Appliances Firepower 2100 Series Appliances Firepower 4100 Series Appliances Firepower 9300 Series Appliances For information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. 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 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. Fixed Releases Firepower 1000 Series and 2100 Series appliances use Cisco FXOS Software as an underlying operating system, which is included in Cisco ASA Software unified image bundles or in Cisco FTD Software unified image bundles. At the time of publication, the release information in the following table (s) was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerability described in this advisory and which release included the fix for this vulnerability. ASA Software for Firepower 1000 Series and Firepower 2100 Series: CSCvt74037 Cisco ASA Software Release First Fixed Release for this Vulnerability 9.8 9.8.4.29 9.9 9.9.2.80 9.10 9.10.1.40 9.12 9.12.4.3 9.13 9.13.1.13 9.14 Not vulnerable. Note : Firepower 1000 Series and 2100 Series Appliances do not run ASA Software earlier than the 9.8 release. FTD Software for Firepower 1000 Series and Firepower 2100 Series: CSCvt74037 Cisco FTD Software Release First Fixed Release for this Vulnerability Earlier than 6.2.1 ^1 Migrate to a fixed release. 6.2.2 Migrate to a fixed release. 6.2.3 Migrate to a fixed release. 6.3.0 6.3.0.6 (future release) 6.4.0 6.4.0.9 6.5.0 6.5.0.5 (future release) 6.6.0 Not vulnerable. Note : Firepower 1000 Series and 2100 Series Appliances do not run FTD Software earlier than the 6.2.1 release. 1. Cisco FMC and FTD Software releases 6.0.1 and earlier, as well as releases 6.2.0 and 6.2.1, have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for this vulnerability. To upgrade to a fixed release of Cisco FTD Software, 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. FXOS Software for Firepower 4100 Series and Firepower 9300 Security Appliances: CSCvt69369 Cisco FXOS Software Release First Fixed Release for this Vulnerability Earlier than 2.2 Migrate to a fixed release. 2.2 Migrate to a fixed release. 2.3 Migrate to a fixed release. 2.4 2.4.1.266 2.6 2.6.1.204 2.7 2.7.1.131 2.8 2.8.1.125 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-fxos-cmdinj-pqZvmXCr Revision History o +---------+------------------------------+---------+--------+-------------+ | Version | Description | Section | Status | Date | +---------+------------------------------+---------+--------+-------------+ | | Updated the Summary section | | | | | | to provide information on a | | | | | 1.1 | new vulnerability affecting | Summary | Final | 2020-OCT-23 | | | fixed release | | | | | | recommendations for code | | | | | | trains 9.13 and 9.14. | | | | +---------+------------------------------+---------+--------+-------------+ | 1.0 | Initial public release. | - | Final | 2020-OCT-21 | +---------+------------------------------+---------+--------+-------------+ - -------------------------------------------------------------------------------- Cisco FXOS Software Firepower Chassis Manager Cross-Site Request Forgery Vulnerability Priority: High Advisory ID: cisco-sa-fxosfcm-csrf-uhO4e5BZ First Published: 2020 October 21 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCvo94700CSCvp75856 CVE-2020-3456 CWE-352 Summary o A vulnerability in the Cisco Firepower Chassis Manager (FCM) of Cisco FXOS Software could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack against a user of an affected device. The vulnerability is due to insufficient CSRF protections for the FCM interface. An attacker could exploit this vulnerability by persuading a targeted user to click a malicious link. A successful exploit could allow the attacker to send arbitrary requests that could take unauthorized actions on behalf of the targeted user. 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-fxosfcm-csrf-uhO4e5BZ Affected Products o Vulnerable Products This vulnerability affects Cisco FXOS Software when it is running on the following platforms: Firepower 2100 Series Appliances when running ASA Software in non-appliance mode Firepower 4100 Series Appliances Firepower 9300 Series Appliances Note : Firepower 2100 Series Appliances use Cisco FXOS Software as an underlying operating system, which is included in Cisco ASA Software unified image bundles. For information about which Cisco 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 1000 Series Appliances Firepower 2100 Series Appliances when running ASA Software in appliance mode Firepower 2100 Series Appliances when running FTD 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 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 first release that includes the fix for this vulnerability. Firepower 4100 Series and 9300 Series Appliances FXOS Software for Firepower 4100 Series and Firepower 9300 Security Appliances: CSCvo94700 Cisco FXOS Software Release First Fixed Release for this Vulnerability Earlier than 2.2 Migrate to a fixed release. 2.2 Migrate to a fixed release. 2.3 Migrate to a fixed release. 2.4 Migrate to a fixed release. 2.6 Migrate to a fixed release. 2.7 Not vulnerable. 2.8 Not vulnerable. Firepower 2100 Series Appliances Firepower 2100 Series appliances use Cisco FXOS Software as an underlying operating system, which is included in Cisco ASA Software unified image bundles. ASA Software for Firepower 2100 Series: CSCvp75856 Cisco ASA Software Release First Fixed Release for this Vulnerability 9.8 Migrate to a fixed release. 9.9 Migrate to a fixed release. 9.10 Migrate to a fixed release. 9.12 Migrate to a fixed release. 9.13 Not vulnerable. 9.14 Not vulnerable. Note : The Firepower 2100 Series Appliances are affected when running ASA Software in non-appliance mode. Note : The Firepower 2100 Series Appliances were first supported on ASA Software release 9.8. 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-fxosfcm-csrf-uhO4e5BZ Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2020-OCT-21 | +----------+---------------------------+----------+--------+--------------+ - -------------------------------------------------------------------------------- Cisco FXOS Software for Firepower 4100/9300 Series Appliances Secure Boot Bypass Vulnerability Priority: High Advisory ID: cisco-sa-fxos-sbbp-XTuPkYTn First Published: 2020 October 21 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCvt31171 CVE-2020-3455 CWE-693 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 secure boot process of Cisco FXOS Software could allow an authenticated, local attacker to bypass the secure boot mechanisms. The vulnerability is due to insufficient protections of the secure boot process. An attacker could exploit this vulnerability by injecting code into a specific file that is then referenced during the device boot process. A successful exploit could allow the attacker to break the chain of trust and inject code into the boot process of the device which would be executed at each boot and maintain persistence across reboots. 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-fxos-sbbp-XTuPkYTn Affected Products o Vulnerable Products This vulnerability affects Cisco FXOS Software releases when running on the following platforms: Firepower 4100 Series Appliances Firepower 9300 Series Appliances For information about which Cisco software releases are vulnerable, see the Fixed Software section of this advisory. For the Firepower 1000 Series Appliances and Firepower 2100 Series Appliances, see the following advisory: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-fxos-sbbyp-KqP6NgrE 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 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 Cisco FXOS Software Cisco FXOS Software Release First Fixed Release for This Vulnerability Earlier than 2.2 Migrate to a fixed release. 2.2 Migrate to a fixed release. 2.3 Migrate to a fixed release. 2.4 2.4.1.268 2.6 2.6.1.214 2.7 2.7.1.131 2.8 Not vulnerable. 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-fxos-sbbp-XTuPkYTn Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2020-OCT-21 | +----------+---------------------------+----------+--------+--------------+ - -------------------------------------------------------------------------------- Cisco FXOS Software for Firepower 4100/9300 Series Command Injection Vulnerability Priority: Medium Advisory ID: cisco-sa-fxos-cmdinj-b63rwKPm First Published: 2020 October 21 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCvt65399 CVE-2020-3459 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 FXOS Software could allow an authenticated, local attacker to inject arbitrary commands that are executed with root privileges. The vulnerability is due to insufficient input validation of commands supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to the affected command. A successful exploit could allow the attacker to execute commands on the underlying operating system 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-fxos-cmdinj-b63rwKPm Affected Products o Vulnerable Products At the time of publication, this vulnerability affected Cisco FXOS Software when running on the following platforms: Firepower 4100 Series Appliances Firepower 9300 Series Appliances For information about which Cisco software releases are vulnerable, see the Fixed Software section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. 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 Firepower 1000 Series Appliances or Firepower 2100 Series Appliances. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o When considering software upgrades , customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories 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. Fixed Releases At the time of publication, the release information in the following table (s) was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerability described in this advisory and which release included the fix for this vulnerability. Cisco FXOS Software Cisco FXOS Software Release First Fixed Release for this Vulnerability Earlier than 2.2 Migrate to a fixed release. 2.2 Migrate to a fixed release. 2.3 Migrate to a fixed release. 2.4 2.4.1.266 2.6 2.6.1.204 2.7 2.7.1.131 2.8 2.8.1.125 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-fxos-cmdinj-b63rwKPm Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2020-OCT-21 | +----------+---------------------------+----------+--------+--------------+ - --------------------------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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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBX5ZC2+NLKJtyKPYoAQjApRAAiyJRAwUfOzgJCLz2q+HBho4TpeobMV4n kyvrNJ2KKow6WbkqfWIdlmLoCFtsczlQ6UCzvxYdSUv0xUyF/2iPEtrwYiSc6rGt 3u0YCJFK3xZyGUES9vwavCkWP2iSuHg8jiO1HKKA8Ab53SvkdaOr5bLgV1V8cjKx yU4kSxIK1rRI24cdy9BMVEzKfznzXpoTfo1J0E9Nq4/VUujbvEzw2D0qTZ8EJtRm oH0+aa/6xifKHRgCAjh0MMUmcnN38ZzB+ptyeSgWet2LstPsCpA1smnLwNapX1Z3 VhPC2Q7h1Qs/+ivMSFR5wRlen8joBPGm8vfbdI9TA7wtDqhBgbdEj+f3S/Tphmmq oUh+NxszBJEUXtri6dXWlbBw2aqd+/ZltX2ZS/1/oGgumQHaLbbUq9kFsFJZbnz/ OOpLGXfOsFyvbWY095mii3s4KlXlgYgr/GgCvjbiH0uWxSddvdH29TV6tcI4Z+lX bVqZqHL9Tie89CP6QAYSVLAPXkkbViHstWjdedS0bAVzjfwDuWj9H/Wr5iwSkeOo VnWP1fHM7eI6fDBGROxwefuF12l/J62y5vhFoF6RaXV4Oc3f/O6S0l+nLe0gMso6 NRyK/cN7YqURAh1jqao4+fRTy2XCqsW6/EiiSIwiIFOLKcJ/yDdYkSaPEgyk/+zR 47AJ9EC+UwY= =JP0Y -----END PGP SIGNATURE-----