High severity · published May 6, 2020
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…
7.5
CVSS
2%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 81% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A5
Asa 5505 Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
A5
Asa 5510 Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
A5
Asa 5512-x Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
A5
Asa 5515-x Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
A5
Asa 5520 Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
A5
Asa 5525-x Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
A5
Asa 5540 Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
A5
Asa 5545-x Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
A5
Asa 5550 Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
A5
Asa 5555-x Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
A5
Asa 5580 Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
A5
Asa 5585-x Firmware · Cisco
9.9(2); 101.5(1.26) · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-3179
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-3179
Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-dos-2-sS2h7aWe
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