Resource exhaustion in Cisco Adaptive Security Appliance
CVE-2020-3528
A vulnerability in the OSPF Version 2 (OSPFv2) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation when the affected software processes certain OSPFv2 packets with Link-Local Signaling (LLS) data. An attacker could exploit this vulnerability by sending a malformed OSPFv2 packet to an affected device. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.014 (71.3th 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
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3528?
- CVE-2020-3528 is a high-severity vulnerability in Cisco Adaptive Security Appliance, classified under Uncontrolled Resource Consumption. CVSS score: 8.6/10. Published 2020-10-21.
- How severe is CVE-2020-3528?
- High severity. CVSS v3 base score is 8.6 out of 10.