CVE-2022-20946
15.11.2022, 21:15
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.Enginsight| Vendor | Product | Version |
|---|---|---|
| cisco | firepower_threat_defense | 6.3.0 ≤ 𝑥 ≤ 6.3.0.5 |
| cisco | firepower_threat_defense | 6.4.0 ≤ 𝑥 ≤ 6.4.0.15 |
| cisco | firepower_threat_defense | 6.5.0 ≤ 𝑥 ≤ 6.5.0.5 |
| cisco | firepower_threat_defense | 6.6.0 ≤ 𝑥 ≤ 6.6.5.2 |
| cisco | firepower_threat_defense | 6.7.0 ≤ 𝑥 ≤ 6.7.0.3 |
| cisco | firepower_threat_defense | 7.0.0 ≤ 𝑥 ≤ 7.0.3 |
| cisco | firepower_threat_defense | 7.1.0.0 |
| cisco | firepower_threat_defense | 7.1.0.1 |
| cisco | firepower_threat_defense | 7.1.0.2 |
𝑥
= Vulnerable software versions
Common Weakness Enumeration
- CWE-122 - Heap-based Buffer OverflowA 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().
- CWE-787 - Out-of-bounds WriteThe software writes data past the end, or before the beginning, of the intended buffer.