Resource exhaustion in Cisco Firepower Threat Defense Software
CVE-2022-20757
A vulnerability in the connection handling function in 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 improper traffic handling when platform limits are reached. An attacker could exploit this vulnerability by sending a high rate of UDP traffic through an affected device. A successful exploit could allow the attacker to cause all new, incoming connections to be dropped, resulting in a DoS condition.
EPSS: 0.012 (65.0th 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 n/a
- Cisco Firepower_threat_defense — versions 7.1.0
- Cisco Secure_firewall_threat_defense — versions 7.1.0
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-20757?
- CVE-2022-20757 is a high-severity vulnerability in Cisco Firepower Threat Defense Software, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 8.6/10. Published 2022-05-03.
- How severe is CVE-2022-20757?
- High severity. CVSS v3 base score is 8.6 out of 10.