Buffer overflow in Cisco Firepower Threat Defense Software
CVE-2020-3562
A vulnerability in the SSL/TLS inspection of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series firewalls could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation for certain fields of specific SSL/TLS messages. An attacker could exploit this vulnerability by sending a malformed SSL/TLS message through an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. No manual intervention is needed to recover the device after it has reloaded.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Cisco Firepower Threat Defense Software
- Cisco Firepower 2110
- Cisco Firepower 2120
- Cisco Firepower 2130
- Cisco Firepower 2140
- Cisco Firepower Threat Defense — versions 6.3.0, 6.4.0, 6.5.0
- Cisco Secure Firewall Threat Defense — versions 6.3.0, 6.4.0, 6.5.0
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-ssl-… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3562?
- CVE-2020-3562 is a high-severity vulnerability in Cisco Firepower Threat Defense Software, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.6/10. Published 2020-10-21.
- How severe is CVE-2020-3562?
- High severity. CVSS v3 base score is 8.6 out of 10.