First Published: December 13, 2023

This document contains release information for Cisco Firepower eXtensible Operating System (FXOS) 2.14.1.

Use these Release Notes as a supplement with the other documents listed in the documentation roadmap:


Note

The online versions of the user documentation are occasionally updated after the initial release. As a result, the information contained in the documentation on Cisco.com supersedes any information contained in the context-sensitive help included with the product.

Introduction

The Cisco security appliance is a next-generation platform for network and content security solutions. The security appliance is part of the Cisco Application Centric Infrastructure (ACI) Security Solution and provides an agile, open, secure platform that is built for scalability, consistent control, and simplified management.

The security appliance provides the following features:

  • Modular chassis-based security system—Provides high performance, flexible input/output configurations, and scalability.

  • Chassis Manager—Graphical user interface provides a streamlined, visual representation of the current chassis status and allows for simplified configuration of chassis features.

  • FXOS CLI—Provides command-based interface for configuring features, monitoring chassis status, and accessing advanced troubleshooting features.

  • FXOS REST API—Allows users to programmatically configure and manage their chassis.

What's New

New Features in FXOS 2.14.1.167

Fixes for various problems (see Resolved bugs in Resolved bugs in FXOS 2.14.1.167)

New Features in FXOS 2.14.1.163

Fixes for various problems (see Resolved bugs in Resolved bugs in FXOS 2.14.1.163)

New Features in FXOS 2.14.1.143

Fixes for various problems (see Resolved bugs in Resolved bugs in FXOS 2.14.1.143)

New Features in FXOS 2.14.1

Cisco FXOS 2.14.1 introduces the following new features:

Feature Description

Monitor Chassis-level health alerts in Secure Firewall Management Center

This feature allows you to monitor your chassis in the management center for chassis-level health alerts. To monitor chassis-level health alerts in the management center, you must manually configure the management center as manager on the chassis, and then register the chassis in the management center.

New/modified CLI: create device-manager manager_name hostname {hostname | ipv4_address | ipv6_address} nat-id nat_id

Integrated firmware upgrade

The FXOS firmware upgrade package is now integrated with platform bundle for firmware auto-upgrade during the FXOS upgrade. Whenever you upgrade your FXOS to latetst version, the firmware package gets unpacked based on the platform and the system checks for the firmware version running on your supervisor. If the firmware version is lower than the firmware version integrated in the platform bundle, the firmware gets auto-upgraded without any user intervention.

New/modified CLI: No new CLIs added. You can use the existing show firmware monitor command to monitor the upgrade process.

Firmware Package Included: Firmware package 1.0.19

Secure Firewall chassis manager single sign-on

The chassis manager now supports single sign-on (SSO) for external users configured at any third-party SAML 2.0-compliant identity provider (IdP).

New/modified pages:

  • Login > Single Sign-On (SSO)

  • Platform Settings > AAA > Single Sign-On (SSO)

Software Download

You can download software images for FXOS and supported applications from one of the following URLs:

For information about the applications that are supported on a specific version of FXOS, see the Cisco FXOS Compatibility guide at this URL:

https://www.cisco.com/c/en/us/td/docs/security/firepower/fxos/compatibility/fxos-compatibility.html

Important Notes

  • In FXOS 2.4(1) or later, if you are using an IPSec secure channel in FIPS mode, the IPSec peer entity must support RFC 7427.

  • When you upgrade a network or security module, certain faults are generated and then cleared automatically. These include a “hot swap not supported” fault or a “module removed when in online state” fault. If you have followed the appropriate procedures, as described in the Cisco Firepower 9300 Hardware Installation Guide or Cisco Firepower 4100 Series Hardware Installation Guide, the fault(s) are cleared automatically and no additional action is required.

  • From FXOS 2.13 release, the set maxfailedlogins command no longer works. The value can still be set, but if you try to log in a greater number of times than the already set value with an invalid password, you are not locked out. For compatibility, a similar command, set max-login-attempts, is available under scope security. This command also prevents logging in after a certain number of failed attempts but sets the value for all users. These commands are only available for Firepower 2100 platform mode and do not affect other platforms.

System Requirements

  • You can access the chassis manager using the following browsers:

    • Mozilla Firefox—Version 42 and later

    • Google Chrome—Version 47 and later

    • Microsoft Internet Explorer—Version 11 and later

    We tested FXOS 2.14.1 using Mozilla Firefox version 42, Google Chrome version 47, and Internet Explorer version 11. Other versions of these browsers are expected to work. However, if you experience any browser-related issues, we suggest you use one of the tested versions.

Upgrade Instructions

You can upgrade your Firepower 9300 or Firepower 4100 series security appliance directly to FXOS 2.14.1 if it is currently running FXOS version 2.2(2) or later. Before you upgrade your Firepower 9300 or Firepower 4100 series security appliance to FXOS 2.14.0, first upgrade to FXOS 2.2(2), or verify that you are currently running FXOS 2.2(2).

For upgrade instructions, see the Cisco Firepower 4100/9300 Upgrade Guide.

Installation Notes

  • From FXOS 2.14.1, the FXOS firmware is bundled with FXOS software image. During FXOS upgrade, the system will auto-upgrade the firmware to the latest version if applicable. If the firmware is upgraded, the system will reboot 2 times and the total FXOS upgrade duration will be extended.

    Following tables lists the time taken for upgrade with or without firmaware uprade:

    FXOS Upgrade With Firmware Upgrade Duration(in mins)
    Initiate FXOS Upgrade with integrated FW changes -
    First Reboot triggered by FXOS upgrade ~9
    CLI after FXOS Upgrade (before FW Upgrade) ~8
    Second Reboot triggered by FW Upgrade ~1 to 20 *
    CLI after FXOS Upgrade and FW Upgrade ~8
    Blade to come online ~13
    Application to come online ~10
    Total ~49-70mins
    FXOS Upgrade Without Firmware Upgrade Duration(in mins)
    Initiate FXOS Upgrade with integrated firmware changes -
    Reboot triggered by FXOS upgrade ~9
    CLI after FXOS Upgrade (before firmware upgrade) ~8
    Blade to come online ~13
    Application to come online ~10
    Total ~40 mins

  • If you are upgrading a Firepower 9300 or Firepower 4100 series security appliance that is running a standalone logical device or if you are upgrading a Firepower 9300 security appliance that is running an intra-chassis cluster, traffic does not traverse through the device while it is upgrading.

  • If you are upgrading a Firepower 9300 or a Firepower 4100 series security appliance that is part of an inter-chassis cluster, traffic does not traverse through the device being upgraded while it is upgrading. However, the other devices in the cluster continue to pass traffic.

  • Downgrade of FXOS images is not officially supported. The only Cisco-supported method of downgrading an image version of FXOS is to perform a complete re-image of the device.

Resolved and Open Bugs

The resolved and open bugs for this release are accessible through the Cisco Bug Search Tool. This web-based tool provides you with access to the Cisco bug tracking system, which maintains information about bugs and vulnerabilities in this product and other Cisco hardware and software products.


Note

You must have a Cisco.com account to log in and access the Cisco Bug Search Tool. If you do not have one, you can Cisco.com.

For more information about the Cisco Bug Search Tool, see the Bug Search Tool Help & FAQ.

Resolved bugs in FXOS 2.14.1.167

The following table lists the previously release-noted and customer-found bugs that were resolved in FXOS 2.14.1.167:

Identifier

Headline

CSCwc76419

Unnecessary FAN error logs needs to be removed from thermal file

CSCwk62296

Address SSP OpenSSH regreSSHion vulnerability

CSCwj69632

Default Hashing Algorithm is SHA1 for Firepower Chassis Manager Certificate on 4110

CSCwk62297

Evaluation of ssp for OpenSSH regreSSHion vulnerability

CSCwk33556

The more command is missing on FMC

CSCwj11300

TPK FTD performance down 25%

CSCwk27296

FMCv passwd command fail

Resolved bugs in FXOS 2.14.1.163

The following table lists the previously release-noted and customer-found bugs that were resolved in FXOS 2.14.1.163:

Identifier

Headline

CSCwj08073

libuv is a multi-platform support library with a focus on asynchronous

CSCwi78370

Firpower 4100/9300 : Update CiscoSSH (Chassis Manager FXOS) to address CVE-2023-48795

CSCwi60430

CVE-2023-51385 (Medium Sev) In ssh in OpenSSH before 9.6, OS command injection might occur if a us

CSCwj38928

High latency observed on FPR3120

CSCwi92914

A flaw was found in the networking subsystem of the Linux kernel withi

CSCwi92917

Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulner

CSCwi84615

some stdout logs not rotated by logrotate

CSCwi24461

Device/port-channel goes down with a core generated for portmanager

CSCwi90399

FTD/ASA system clock resets to year 2023

CSCwj55081

FPR3K loses connectivity to the management center via mgmt data interface on reboot of FPR3K

CSCwj20118

FTDv reloads and generate backtrace after push EIGRP config

CSCwj49958

Crypto IPSEC Negotiation Failing At "Failed to compute a hash value"

CSCwi24004

Out-of-bounds Read vulnerability in mod_macro of Apache HTTP Server.Th

CSCwb02701

FXOS does not retry NTP sync with servers

CSCwj42025

CCM ID LTS21-100 with RCPL21 update

CSCwi78189

It was discovered that when exec'ing from a non-leader thread, armed P

CSCwi60248

A malicious HTTP sender can use chunk extensions to cause a receiver r

CSCwh43230

Strong Encryption license is not getting applied to ASA firewalls in HA.

CSCwi59271

Suppress "End of script output before headers" syslog on FXOS

CSCwf99303

Management UI presents self-signed cert rather than custom CA signed one after upgrade

CSCwh71235

A flaw was found in QEMU. The async nature of hot-unplug enables a rac

CSCwi49506

Before Go 1.20, the RSA based TLS key exchanges used the math/big libr

CSCwj16119

FP2110: When Leaving On-Box (FDM) Mode Platform API Fails

CSCwj25066

CCM ID 68 - LTS21 - CISCO_LTS21_R2160 release branch

CSCwk66252

It was discovered that a nft object or expression could reference a nf

CSCwi31480

Alert: Decommission failed, reason: Internal error is not cleared from FCM or CLI after acknowledge

CSCwj08083

An issue was discovered in libxml2 before 2.11.7 and 2.12.x before 2.1

CSCwj88930

net-snmp provides various tools relating to the Simple Network Managem

CSCwj88931

net-snmp provides various tools relating to the Simple Network Managem

CSCwj88932

net-snmp provides various tools relating to the Simple Network Managem

CSCwi60256

strongSwan before 5.9.12 has a buffer overflow and possible unauthenti

CSCwi13134

Hardware bypass not working as expected in FP3140

CSCwk66253

An out-of-bounds access vulnerability involving netfilter was reported

CSCwj88929

net-snmp provides various tools relating to the Simple Network Managem

CSCwi68135

A vulnerability was found in SQLite SQLite3 up to 3.43.0 and classifie

CSCwi68133

A use-after-free vulnerability in the Linux kernel's ipv4: igmp compon

CSCwi68132

A heap out-of-bounds write vulnerability in the Linux kernel's Perform

CSCwi23964

Python 3.x through 3.10 has an open redirection vulnerability in lib/h

CSCwi78210

An out-of-bounds memory write flaw was found in the Linux kernelâs Tra

CSCwh94201

An issue was discovered in drivers/net/ethernet/intel/igb/igb_main.c i

CSCwi92927

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tab

CSCwi24032

A heap out-of-bounds write vulnerability in the Linux kernel's Linux K

CSCwi55629

ASA/FTD : Port-channels remain down on Firepower 1010 devices after upgrade

CSCwi49360

A flaw was found in the 9p passthrough filesystem (9pfs) implementatio

CSCwj48801

4200s have high UDP latency at low packet rates.

CSCwi24027

A use-after-free vulnerability was found in drivers/nvme/target/tcp.c'

CSCwh47732

Vulnerabilities in linux-kernel 5.10.79 CVE-2023-3111 and others

CSCwi24021

An issue was discovered in the Linux kernel before 6.5.9, exploitable

CSCwi53987

SSL protocol settings does not modify the FDM GUI certificate configuration or disable TLSv1.1

CSCwi46641

FTDv may traceback and reload in Thread Name 'PTHREAD-3744' when changing interface status

CSCwi78206

A vulnerability was found in GnuTLS, where a cockpit (which uses gnuTL

CSCwj30962

3140 3 MI instances upgrade failed

CSCwi85951

A use-after-free flaw was found in the __ext4_remount in fs/ext4/super

CSCwi13062

Debug messages seen on console on executing show tech-support fprm detail

CSCwj54717

Radius secret key of over 14 characters for external authentication does not get deployed (FPR3100)

CSCwj88928

net-snmp provides various tools relating to the Simple Network Managem

CSCwi04351

Threat defense upgrade failling on script 999_finish/999_zz_install_bundle.sh

CSCwi79703

Incorrect Timezone Format on FTD When Configured via FXOS

CSCwj88925

net-snmp provides various tools relating to the Simple Network Managem

CSCwi79120

Some ssh sessions not timing out, leading to ssh and console unable to connect to the FXOS CLI

Resolved bugs in FXOS 2.14.1.143

The following table lists the previously release-noted and customer-found bugs that were resolved in FXOS 2.14.1.143:

Identifier

Headline

CSCwh19613

ASA crashed with SAML scenarios.

CSCwi62683

Upgrade to CiscoSSH 1.13.46 in FXOS address CVE-2023-48795.

CSCwi66007

Entropy mixing breaks NPU build.

CSCwi76630

FP2100/FP1000: ASA Smart licenses lost after reload.

CSCwj09999

FP 3100 MTU change on management interface is NOT persistent across reboots (returns to default MTU).

CSCwf61280

Failing to dowload FTD image via SAML SSO login.

CSCwh22888

FXOS: Remove enforcement of blades going into degraded state after multiple DIMM correctable errors.

CSCwh53276

Upgrade to CiscoSSL 1.1.1v.7.3.338-fips in SSP MIO.

CSCwh68167

Adding Jent library in SSP MIO.

CSCwi17589

Jent Implemention in SSP MIO.

CSCwi27924

Using entropy mixing with CiscoSSL.

CSCwi36311

Use kill tree function in SMA instead of SIGTERM.

CSCwe11124

ENH: Combine firmware bundle packages into FXOS MIO update packages.

CSCwh33196

SSP MIO: Swims token support in signing image.

CSCwf62228

Timezone not working correctly on 9300/4100 platforms.

Online Resources

Cisco provides online resources to download documentation, software, and tools, to query bugs, and to open service requests. Use these resources to install and configure FXOS software and to troubleshoot and resolve technical issues.

Access to most tools on the Cisco Support & Download site requires a Cisco.com user ID and password.

Contact Cisco

If you cannot resolve an issue using the online resources listed above, contact Cisco TAC:

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