Vulnerability in Cisco Firepower Threat Defense Software
CVE-2019-1833
A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) protocol parser of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured policies. The vulnerability is due to improper parsing of specific attributes in a TLS packet header. An attacker could exploit this vulnerability by sending malicious TLS messages to the affected system. A successful exploit could allow the attacker to bypass the configured policies for the system, which could allow traffic to flow through without being inspected.
EPSS: 0.017 (75.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.
Affected products
- Cisco Firepower Threat Defense Software — versions unspecified
- Cisco Secure_firewall_management_center — versions 6.1.0, 6.2.0, 6.2.1
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2019-1833?
- CVE-2019-1833 is a medium-severity vulnerability in Cisco Firepower Threat Defense Software, classified under Protection Mechanism Failure. CVSS score: 5.8/10. Published 2019-05-16.
- How severe is CVE-2019-1833?
- Medium severity. CVSS v3 base score is 5.8 out of 10.