CVE-2020-3179
Description
A vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a memory handling error when GRE over IPv6 traffic is processed. An attacker could exploit this vulnerability by sending crafted GRE over IPv6 packets with either IPv4 or IPv6 payload through an affected device. A successful exploit could allow the attacker to cause the device to crash, resulting in a DoS condition.
How to fix
- cisco secure_firewall_threat_defense6.3.0.5, 6.4.0.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco secure_firewall_threat_defense | 6.3.0 ≤ v < 6.3.0.5, 6.4.0 ≤ v < 6.4.0.6 | 6.3.0.5, 6.4.0.6 |
| cisco asa_5505_firmware | 9.9\(2\), 101.5\(1.26\) | — |
| cisco asa_5510_firmware | 9.9\(2\), 101.5\(1.26\) | — |
| cisco asa_5512-x_firmware | 9.9\(2\), 101.5\(1.26\) | — |
| cisco asa_5515-x_firmware | 9.9\(2\), 101.5\(1.26\) | — |
| cisco asa_5520_firmware | 9.9\(2\), 101.5\(1.26\) | — |
| cisco asa_5525-x_firmware | 9.9\(2\), 101.5\(1.26\) | — |
| cisco asa_5540_firmware | 9.9\(2\), 101.5\(1.26\) | — |
| cisco asa_5545-x_firmware | 9.9\(2\), 101.5\(1.26\) | — |
| cisco asa_5550_firmware | 9.9\(2\), 101.5\(1.26\) | — |
| cisco asa_5555-x_firmware | 9.9\(2\), 101.5\(1.26\) | — |
| cisco asa_5580_firmware | 9.9\(2\), 101.5\(1.26\) | — |
| cisco asa_5585-x_firmware | 9.9\(2\), 101.5\(1.26\) | — |
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