QID 317086

Date Published: 2021-10-28

QID 317086: Cisco Firepower Threat Defense (FTD) Software Software-Based Secure Sockets Layer/Transport Layer Security (SSL/TLS) Denial of Service (DoS) Vulnerability (cisco-sa-ftd-tls-decrypt-dos-BMxYjm8M)

A vulnerability in the software-based SSL/TLS message handler of Cisco Firepower Threat Defense (FTD) Software could allow
an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition.

Affected Products
Cisco devices if they are running the following Cisco software releases under the following conditions:
FTD Software: Vulnerable versions 7.0.0 and 7.0.01
If affected devices are configured to process inbound SSL/TLS message, they are vulnerable to crafted SSL/TLS message that are sent to the device.
Note: Potential detection as cannot confirm on whether a Device is able to process Inbound SSL or TLS Messages.
Support only for asa 55xx with firepower service.

QID Detection Logic (Authenticated):
The check matches Cisco FTD version retrieved via Unix Auth using "version" command.

A successful exploit could allow the attacker to cause the affected device to reload, 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-tls-decrypt-dos-BMxYjm8M for more information.

    Vendor References

    CVEs related to QID 317086

    CVE-2021-34783 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-ftd-tls-decrypt-dos-BMxYjm8M URL Logo tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-tls-decrypt-dos-BMxYjm8M
    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