Resource exhaustion in Cisco Adaptive Security Appliance Software
CVE-2021-34792
A vulnerability in the memory management of Cisco Adaptive Security Appliance (ASA) Software and 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 resource management when connection rates are high. An attacker could exploit this vulnerability by opening a significant number of connections on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.014 (69.4th 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 Adaptive_security_appliance_software
- Cisco Asa_5505
- Cisco Asa_5505_firmware — versions 009.014\(001.150\), 099.017\(001.211\), 099.017\(001.220\)
- Cisco Asa_5512-x
- Cisco Asa_5512-x_firmware — versions 009.014\(001.150\), 099.017\(001.211\), 099.017\(001.220\)
- Cisco Asa_5515-x
- Cisco Asa_5515-x_firmware — versions 009.014\(001.150\), 099.017\(001.211\), 099.017\(001.220\)
- Cisco Asa_5525-x
- Cisco Asa_5525-x_firmware — versions 009.014\(001.150\), 099.017\(001.211\), 099.017\(001.220\)
- Cisco Asa_5545-x
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-34792?
- CVE-2021-34792 is a high-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Uncontrolled Resource Consumption. CVSS score: 8.6/10. Published 2021-10-27.
- How severe is CVE-2021-34792?
- High severity. CVSS v3 base score is 8.6 out of 10.