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…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Secure Firewall Threat Defense | from 6.2.3 before 6.2.3.16 from 6.3.0 before 6.3.0.6 from 6.4.0 before 6.4.0.6 |
| Cisco | Asa 5505 Firmware | Versions 9.4\(1\), 96.4\(0.42\) |
| Cisco | Asa 5510 Firmware | Versions 9.4\(1\), 96.4\(0.42\) |
| Cisco | Asa 5512-X Firmware | Versions 9.4\(1\), 96.4\(0.42\) |
| Cisco | Asa 5515-X Firmware | Versions 9.4\(1\), 96.4\(0.42\) |
| Cisco | Asa 5520 Firmware | Versions 9.4\(1\), 96.4\(0.42\) |
| Cisco | Asa 5525-X Firmware | Versions 9.4\(1\), 96.4\(0.42\) |
| Cisco | Asa 5540 Firmware | Versions 9.4\(1\), 96.4\(0.42\) |
| Cisco | Asa 5545-X Firmware | Versions 9.4\(1\), 96.4\(0.42\) |
| Cisco | Asa 5550 Firmware | Versions 9.4\(1\), 96.4\(0.42\) |
| Cisco | Asa 5555-X Firmware | Versions 9.4\(1\), 96.4\(0.42\) |
| Cisco | Asa 5580 Firmware | Versions 9.4\(1\), 96.4\(0.42\) |