Operating System:

[Cisco]

Published:

10 November 2022

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2022.5769
Cisco Firepower Threat Defense Software Privilege Escalation Vulnerability
                             10 November 2022

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco Firepower Threat Defense Software
Publisher:         Cisco Systems
Operating System:  Cisco
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-20949  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-mgmt-privesc-7GqR2th

Comment: CVSS (Max):  6.5 CVE-2022-20949 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H)
         CVSS Source: Cisco Systems
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

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Cisco Firepower Threat Defense Software Privilege Escalation Vulnerability

Priority:        Medium
Advisory ID:     cisco-sa-ftd-mgmt-privesc-7GqR2th
First Published: 2022 November 9 16:00 GMT
Version 1.0:     Final
Workarounds:     No workarounds available
Cisco Bug IDs:   CSCwb52401
CVE Names:       CVE-2022-20949
CWEs:            CWE-399

Summary

  o A vulnerability in the management web server of Cisco Firepower Threat
    Defense (FTD) Software could allow an authenticated, remote attacker with
    high privileges to execute configuration commands on an affected system.

    This vulnerability exists because access to HTTPS endpoints is not properly
    restricted on an affected device. An attacker could exploit this
    vulnerability by sending specific messages to the affected HTTPS handler. A
    successful exploit could allow the attacker to perform configuration
    changes on the affected system, which should be configured and managed only
    through Cisco Firepower Management Center (FMC) Software.

    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-ftd-mgmt-privesc-7GqR2th

    This advisory is part of the November 2022 release of the Cisco ASA, FTD,
    and FMC Security Advisory Bundled publication. For a complete list of the
    advisories and links to them, see Cisco Event Response: November 2022
    Semiannual Cisco ASA, FMC, and FTD Software Security Advisory Bundled
    Publication .

Affected Products

  o Vulnerable Products

    At the time of publication, this vulnerability affected Cisco products if
    they were running a vulnerable release of Cisco FTD Software managed by
    Cisco FMC Software and had HTTPS access enabled.

    For information about which Cisco software releases are vulnerable at the
    time of publication, see the Fixed Software section of this advisory.

    Determine the HTTPS Management Access Configuration

    To identify the status and port of the HTTPS management access, use the
    show running-config http CLI command. The following example shows the
    output of the show running-config http command on a device that has HTTPS
    management access enabled on the inside and outside interfaces using TCP
    port 8443:

        firepower# show running-config http
        http server enable 8443
        http 0.0.0.0 0.0.0.0 inside
        http 0.0.0.0 0.0.0.0 outside

    If the line starting with http server enable does not include a port, the
    default port 443 is used. The exact port value does not affect the
    vulnerability status of the device.

    If the line starting with http server enable is missing, or the output does
    not include an HTTP access control list (ACL) associated with an interface,
    HTTPS management access is disabled.

    The exact value of the HTTP ACL does not affect the vulnerability status of
    the device. However, for successful exploitation, the attacker must be able
    to connect to the HTTPS management server of the device from an IP address
    that is permitted by the HTTP ACL.

    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) Software
       FMC Software
       Next-Generation Intrusion Prevention System (NGIPS) Software

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.

    Cisco ASA, FMC, and FTD Software

    To help customers determine their exposure to vulnerabilities in Cisco ASA,
    FMC, and FTD Software, Cisco provides the Cisco Software Checker . This
    tool identifies any Cisco security advisories that impact a specific
    software release and the earliest release that fixes the vulnerabilities
    that are described in each advisory ("First Fixed"). If applicable, the
    tool also returns the earliest release that fixes all the vulnerabilities
    that are described in all the advisories that the Software Checker
    identifies ("Combined First Fixed").

    To use the tool, go to the Cisco Software Checker page and follow the
    instructions. Alternatively, use the following form to search for
    vulnerabilities that affect a specific software release. To use the form,
    follow these steps:

     1. Choose which advisories the tool will search-all advisories, only
        advisories with a Critical or High Security Impact Rating (SIR) , or
        only this advisory.
     2. Choose the appropriate software.
     3. Choose the appropriate platform.
     4. Enter a release number-for example, 9.16.2.11 for Cisco ASA Software or
        6.6.7 for Cisco FTD Software.
     5. Click Check .
        
    For instructions on upgrading your FTD device, see Cisco Firepower
    Management Center Upgrade Guide .


    Additional Resources

    For help determining the best Cisco ASA, FTD, or FMC Software release, see
    the following Recommended Releases documents. If a security advisory
    recommends a later release, Cisco recommends following the advisory
    guidance.

    Cisco ASA Compatibility
    Cisco Secure Firewall ASA Upgrade Guide
    Cisco Secure Firewall Threat Defense Compatibility Guide

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.

Related to This Advisory

  o Cisco Event Response: November 2022 Semiannual Cisco ASA, FMC, and FTD
    Software Security Advisory Bundled Publication

URL

  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-mgmt-privesc-7GqR2th

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2022-NOV-09  |
    +----------+---------------------------+----------+--------+--------------+

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