Improper input validation in Cisco Adaptive Security Appliance Software
CVE-2020-3191
A vulnerability in DNS over IPv6 packet processing for Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper length validation of a field in an IPv6 DNS packet. An attacker could exploit this vulnerability by sending a crafted DNS query over IPv6, which traverses the affected device. An exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. This vulnerability is specific to DNS over IPv6 traffic only.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.018 (76.5th 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 9.4\(1\), 96.4\(0.42\)
- Cisco Asa_5510
- Cisco Asa_5510_firmware — versions 9.4\(1\), 96.4\(0.42\)
- Cisco Asa_5512-x
- Cisco Asa_5512-x_firmware — versions 9.4\(1\), 96.4\(0.42\)
- Cisco Asa_5515-x
- Cisco Asa_5515-x_firmware — versions 9.4\(1\), 96.4\(0.42\)
- Cisco Asa_5520
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3191?
- CVE-2020-3191 is a high-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2020-05-06.
- How severe is CVE-2020-3191?
- High severity. CVSS v3 base score is 8.6 out of 10.