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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.020 (79.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.020 · change: +0.000
Affected products
- Cisco Asa 5505
- Cisco Asa 5505 Firmware — versions 101.5\(1.26\), 9.9\(2\), 101.5(1.26)
- Cisco Asa 5510
- Cisco Asa 5510 Firmware — versions 101.5\(1.26\), 9.9\(2\), 101.5(1.26)
- Cisco Asa 5512-X
- Cisco Asa 5512-X Firmware — versions 101.5\(1.26\), 9.9\(2\), 101.5(1.26)
- Cisco Asa 5515-X
- Cisco Asa 5515-X Firmware — versions 101.5\(1.26\), 9.9\(2\), 101.5(1.26)
- Cisco Asa 5520
- Cisco Asa 5520 Firmware — versions 101.5\(1.26\), 9.9\(2\), 101.5(1.26)
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-dos-… (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.