QID 317175

Date Published: 2022-05-04

QID 317175: Cisco Firepower Threat Defense (FTD) Software Domain Name System (DNS) Enforcement Denial of Service (DoS) Vulnerability (cisco-sa-FTD-snort3-DOS-Aq38LVdM)

A vulnerability in the Snort rule evaluation function of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

Affected Products
This vulnerability affects Cisco platforms if they are running a vulnerable release of Cisco FTD Software and both of the following conditions are met:

The device is running Snort 3.
DNS reputation enforcement is enabled on the device.
Note: This QID is not checking for Snort 3 status. Hence QID is kept as potential
Vulnerable Version:
6.7.0 prior to 7.0.2
7.1.0 prior to 7.1.0.1

A successful exploit could allow the attacker to cause traffic that is going through the affected device to be dropped, resulting in a DoS condition.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as High - 7.8 severity.
    • Solution

    Customers are advised to refer to cisco-sa-FTD-snort3-DOS-Aq38LVdM for more information.

    Vendor References

    CVEs related to QID 317175

    CVE-2022-20767 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-FTD-snort3-DOS-Aq38LVdM URL Logo tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-FTD-snort3-DOS-Aq38LVdM
    By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].

    © CVE.report 2026

    Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

    CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

    Free CVE JSON API cve.report/api

    CVE.report and Source URL Uptime Status status.cve.report