Buffer overflow in Cisco Adaptive Security Appliance
CVE-2021-40118
A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to improper input validation when parsing HTTPS requests. An attacker could exploit this vulnerability by sending a malicious HTTPS request to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Vulnerability class: Buffer Overflow
EPSS: 0.013 (67.6th 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
- Cisco Adaptive_security_appliance_software
- Cisco Asa_5505
- Cisco Asa_5505_firmware — versions 009.012\(004.024\), 009.015\(001\), 009.015\(001.015\)
- Cisco Asa_5512-x
- Cisco Asa_5512-x_firmware — versions 009.012\(004.024\), 009.015\(001\), 009.015\(001.015\)
- Cisco Asa_5515-x
- Cisco Asa_5515-x_firmware — versions 009.012\(004.024\), 009.015\(001\), 009.015\(001.015\)
- Cisco Asa_5525-x
- Cisco Asa_5525-x_firmware — versions 009.012\(004.024\), 009.015\(001\), 009.015\(001.015\)
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-40118?
- CVE-2021-40118 is a high-severity vulnerability in Cisco Adaptive Security Appliance, classified under Stack-based Buffer Overflow. CVSS score: 8.6/10. Published 2021-10-27.
- How severe is CVE-2021-40118?
- High severity. CVSS v3 base score is 8.6 out of 10.