CVE-2020-3179
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.93%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.93% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-415
- Affected
- cisco/secure firewall threat defense · cisco/asa 5505 firmware · cisco/asa 5510 firmware · cisco/asa 5512-x firmware · cisco/asa 5515-x firmware · cisco/asa 5520 firmware · cisco/asa 5525-x firmware · cisco/asa 5540 firmware · cisco/asa 5545-x firmware · cisco/asa 5550 firmware · cisco/asa 5555-x firmware · cisco/asa 5580 firmware · cisco/asa 5585-x firmware
- Source
- psirt@cisco.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.