CVE-2022-20946
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.
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco secure_firewall_threat_defense | 6.3.0 ≤ v ≤ 6.3.0.5, 6.4.0 ≤ v ≤ 6.4.0.15, 6.5.0 ≤ v ≤ 6.5.0.5, 6.6.0 ≤ v ≤ 6.6.5.2, 6.7.0 ≤ v ≤ 6.7.0.3, 7.0.0 ≤ v ≤ 7.0.3, 7.1.0.0, 7.1.0.1, 7.1.0.2 | — |
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