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             AUSCERT External Security Bulletin Redistribution

           Cisco Firepower Threat Defense Software Local Malware
                 Analysis Denial of Service Vulnerability
                               29 April 2022


        AusCERT Security Bulletin Summary

Product:           Cisco Firepower Threat Defense Software
Publisher:         Cisco Systems
Operating System:  Cisco
Resolution:        Patch/Upgrade
CVE Names:         CVE-2022-20748  

Original Bulletin: 

Comment: CVSS (Max):  5.3 CVE-2022-20748 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
         CVSS Source: Cisco Systems
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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Cisco Firepower Threat Defense Software Local Malware Analysis Denial of
Service Vulnerability

Priority:        Medium
Advisory ID:     cisco-sa-ftd-amp-local-dos-CUfwRJXT
First Published: 2022 April 27 16:00 GMT
Version 1.0:     Final
Workarounds:     No workarounds available
Cisco Bug IDs:   CSCvy33560
CVE Names:       CVE-2022-20748
CWEs:            CWE-664


  o A vulnerability in the local malware analysis process of Cisco Firepower
    Threat Defense (FTD) Software could allow an unauthenticated, remote
    attacker to cause a denial of service (DoS) condition on the affected

    This vulnerability is due to insufficient error handling in the local
    malware analysis process of an affected device. An attacker could exploit
    this vulnerability by sending a crafted file through the device. A
    successful exploit could allow the attacker to cause the local malware
    analysis process to crash, which could result in a DoS condition.

    Notes :

     1. Manual intervention may be required to recover from this situation.
     2. Malware cloud lookup and dynamic analysis will not be impacted.

    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:

    This advisory is part of the April 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: April 2022 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 and had a
    Malware and File policy with Local Malware Analysis enabled.

    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.

    Determine the Software Configuration

    The Local Malware Analysis feature is enabled through Cisco Firepower
    Management Center (FMC) Software and cannot be enabled in the Cisco
    Firepower Device Manager (FDM) UI. This feature requires a Malware license.

    To determine whether the Local Malware Analysis feature is enabled,
    navigate to the Cisco FMC Software UI and select Policies > File Policy >
    Rules . If any of the rules have Local Malware Analysis displayed in the
    Action column, the feature is enabled. For more information, see the FMC
    Configuration Guide .

    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 or Cisco FMC Software.


  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

    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 FTD Software Release   First Fixed Release for This Vulnerability
    6.2.2 and earlier ^1         Not vulnerable.
    6.2.3                        Not vulnerable.
    6.3.0 ^1                     Not vulnerable.
    6.4.0                        Not vulnerable.
    6.5.0 ^1                     Not vulnerable.
    6.6.0                        Not vulnerable.
    6.7.0                        Not vulnerable.
    7.0.0                        7.0.1
    7.1.0                        Not vulnerable.

    1. Cisco FMC and FTD Software releases 6.2.2 and earlier, as well as
    releases 6.3.0 and 6.5.0, have reached end of software maintenance .
    Customers are advised to migrate to a supported release that includes the
    fix for this vulnerability.

    For instructions on upgrading your FTD device, see Cisco Firepower
    Management Center Upgrade Guide .

    The Cisco Product Security Incident Response Team (PSIRT) validates only
    the affected and fixed release information that is documented in this

Exploitation and Public Announcements

  o The Cisco PSIRT is not aware of any public announcements or malicious use
    of the vulnerability that is described in this advisory.


  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: April 2022 Cisco ASA, FMC, and FTD Software Security
    Advisory Bundled Publication


  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-amp-local-dos-CUfwRJXT

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    | 1.0      | Initial public release.   | -        | Final  | 2022-APR-27  |

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