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.
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firepower_threat_defense | Cisco | 6.3.0 (including) | 6.3.0.5 (including) |
| Firepower_threat_defense | Cisco | 6.4.0 (including) | 6.4.0.15 (including) |
| Firepower_threat_defense | Cisco | 6.5.0 (including) | 6.5.0.5 (including) |
| Firepower_threat_defense | Cisco | 6.6.0 (including) | 6.6.5.2 (including) |
| Firepower_threat_defense | Cisco | 6.7.0 (including) | 6.7.0.3 (including) |
| Firepower_threat_defense | Cisco | 7.0.0 (including) | 7.0.3 (including) |
| Firepower_threat_defense | Cisco | 7.1.0.0 (including) | 7.1.0.0 (including) |
| Firepower_threat_defense | Cisco | 7.1.0.1 (including) | 7.1.0.1 (including) |
| Firepower_threat_defense | Cisco | 7.1.0.2 (including) | 7.1.0.2 (including) |