Double Free in Cisco Asa 5505
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. 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.
Vulnerability class: Double Free
EPSS: 0.019 (78.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Cisco Asa_5505
- Cisco Asa_5505_firmware — versions 9.9\(2\), 101.5\(1.26\)
- Cisco Asa_5510
- Cisco Asa_5510_firmware — versions 9.9\(2\), 101.5\(1.26\)
- Cisco Asa_5512-x
- Cisco Asa_5512-x_firmware — versions 9.9\(2\), 101.5\(1.26\)
- Cisco Asa_5515-x
- Cisco Asa_5515-x_firmware — versions 9.9\(2\), 101.5\(1.26\)
- Cisco Asa_5520
- Cisco Asa_5520_firmware — versions 9.9\(2\), 101.5\(1.26\)
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3179?
- CVE-2020-3179 is a high-severity vulnerability in Cisco Asa 5505, classified under Double Free. CVSS score: 7.5/10. Published 2020-05-06.
- How severe is CVE-2020-3179?
- High severity. CVSS v3 base score is 7.5 out of 10.