Buffer overflow in Cisco Firepower Threat Defense Software
CVE-2022-20946
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.
Vulnerability class: Buffer Overflow
EPSS: 0.009 (55.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Cisco Firepower Threat Defense Software — versions 6.6.0, 6.6.0.1, 6.6.1
- Cisco Firepower_threat_defense — versions 7.1.0.0, 7.1.0.1, 7.1.0.2
- Cisco Secure_firewall_threat_defense — versions 7.1.0.0, 7.1.0.1, 7.1.0.2
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2022-20946?
- CVE-2022-20946 is a high-severity vulnerability in Cisco Firepower Threat Defense Software, classified under Heap-based Buffer Overflow. CVSS score: 8.6/10. Published 2022-11-15.
- How severe is CVE-2022-20946?
- High severity. CVSS v3 base score is 8.6 out of 10.