High · published November 16, 2022
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.
| Product | Versions | Fixed in |
|---|---|---|
| cisco/secure_firewall_threat_defense | ≥ 6.3.0, ≤ 6.3.0.5 | — |
| cisco/secure_firewall_threat_defense | ≥ 6.4.0, ≤ 6.4.0.15 | — |
| cisco/secure_firewall_threat_defense | ≥ 6.5.0, ≤ 6.5.0.5 | — |
| cisco/secure_firewall_threat_defense | ≥ 6.6.0, ≤ 6.6.5.2 | — |
| cisco/secure_firewall_threat_defense | ≥ 6.7.0, ≤ 6.7.0.3 | — |
| cisco/secure_firewall_threat_defense | ≥ 7.0.0, ≤ 7.0.3 | — |
| cisco/secure_firewall_threat_defense | all versions | — |
| cisco/secure_firewall_threat_defense | all versions | — |
| cisco/secure_firewall_threat_defense | all versions | — |