cisco-sa-ftd-gre-dos-hmedHQPM: Cisco Firepower Threat Defense Software Generic Routing Encapsulation Denial of Service Vulnerability
First published: Wed Nov 09 2022(Updated: )
A vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature 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. This vulnerability is due to a memory handling error that occurs when GRE traffic is processed. An attacker could exploit this vulnerability by sending a crafted GRE payload through an affected device. A successful exploit could allow the attacker to cause the device to restart, resulting in a DoS condition. 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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-gre-dos-hmedHQPM 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.
Credit: This vulnerability was found by Satheeshkumar Eswaramoorthy Cisco during internal security testing
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Secure Firewall Threat Defense |
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Reference Links
Frequently Asked Questions
What is the severity of cisco-sa-ftd-gre-dos-hmedHQPM?
The severity of cisco-sa-ftd-gre-dos-hmedHQPM is classified as high, due to its potential to cause a denial of service on affected devices.
How do I fix cisco-sa-ftd-gre-dos-hmedHQPM?
To remediate cisco-sa-ftd-gre-dos-hmedHQPM, ensure you update your Cisco Firepower Threat Defense software to the latest patched version provided by Cisco.
Who is affected by cisco-sa-ftd-gre-dos-hmedHQPM?
Organizations using Cisco Firepower Threat Defense software with GRE tunnel decapsulation features are particularly at risk due to this vulnerability.
What are the exploit conditions for cisco-sa-ftd-gre-dos-hmedHQPM?
cisco-sa-ftd-gre-dos-hmedHQPM can be exploited by an unauthenticated remote attacker without requiring any specific credentials.
What impact does cisco-sa-ftd-gre-dos-hmedHQPM have on network security?
The impact of cisco-sa-ftd-gre-dos-hmedHQPM is a potential denial of service that could disrupt the operational capability of the affected Cisco devices.
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