CVE-2022-20946 A vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of Cisco Firepower Threat…
Description
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. https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-gre-dos-hmedHQPM ["https://tools.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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Firepower Threat Defense Software 7.1 | 7.1.0 → 7.1.0.2 | No fix stated |
| Cisco Firepower Threat Defense Software 7.0 | 7.0.0 → 7.0.3 | No fix stated |
| Cisco Firepower Threat Defense Software 6.7 | 6.7.0 → 6.7.0.3 | No fix stated |
| Cisco Firepower Threat Defense Software 6.6 | 6.6.0 → 6.6.5.2 | No fix stated |
| Cisco Firepower Threat Defense Software 6.4 | 6.4.0 → 6.4.0.15 | No fix stated |