7.5highHigh
CVE-2020-3179
Cisco Secure Firewall Threat Defense
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.
Exploitation status
- A vendor advisory or patch reference has been published.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, no account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 7.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness
- CWE-415
- Assigned by
- psirt@cisco.com
Dates
- Published
- 2020-05-06
- Last modified
- 2026-08-11
- Sources
- NVD
Affected products
- Cisco Secure Firewall Threat Defense6.3.0 - 6.3.0.5, 6.4.0 - 6.4.0.6
- Cisco Asa 5505 Firmware9.9\(2\), 101.5\(1.26\)
- Cisco Asa 5505all versions
- Cisco Asa 5510 Firmware9.9\(2\), 101.5\(1.26\)
- Cisco Asa 5510all versions
- Cisco Asa 5512-X Firmware9.9\(2\), 101.5\(1.26\)
- Cisco Asa 5512-Xall versions
- Cisco Asa 5515-X Firmware9.9\(2\), 101.5\(1.26\)
- Cisco Asa 5515-Xall versions
- Cisco Asa 5520 Firmware9.9\(2\), 101.5\(1.26\)
- Cisco Asa 5520all versions
- Cisco Asa 5525-X Firmware9.9\(2\), 101.5\(1.26\)
As listed in the NVD configuration data. Not a statement about your estate.