Improper input validation in Cisco Firepower Threat Defense Software
CVE-2019-1981
A vulnerability in the normalization functionality of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software could allow an unauthenticated, remote attacker to bypass filtering protections. The vulnerability is due to insufficient normalization of a text-based payload. An attacker could exploit this vulnerability by sending traffic that contains specifically obfuscated payloads through an affected device. An exploit could allow the attacker to bypass filtering and deliver malicious payloads to protected systems that would otherwise be blocked.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.010 (62.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Cisco Firepower Threat Defense Software — versions unspecified
- Cisco Firepower Services Software For Asa
- Cisco Firepower Threat Defense
- Cisco Secure Firewall Management Center — versions 2.9.15, 2.9.16
- Cisco Secure Firewall Threat Defense
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190816… (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-1981?
- CVE-2019-1981 is a medium-severity vulnerability in Cisco Firepower Threat Defense Software, classified under CWE-264. CVSS score: 5.8/10. Published 2019-11-05.
- How severe is CVE-2019-1981?
- Medium severity. CVSS v3 base score is 5.8 out of 10.