Detections
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Cisco Firepower Threat Defense Software SSL/TLS Policy Bypass Vulnerability
medium Nessus Plugin ID 126310
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its self-reported version, Cisco Firepower Threat Defense Software is affected by following vulnerability- 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.
(CVE-2019-1833)
Please see the included Cisco BIDs and Cisco Security Advisory for more information
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvi81022See Also
Plugin Details
Severity: Medium
ID: 126310
File Name: cisco-sa-20190515-ftd-ssltls-bypass.nasl
Version: 1.3
Type: local
Family: CISCO
Published: 6/27/2019
Updated: 10/18/2019
Configuration: Enable paranoid mode
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 1.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2019-1833
CVSS v3
Risk Factor: Medium
Base Score: 5.8
Temporal Score: 5.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:firepower_threat_defense
Required KB Items: Host/Cisco/ASA, Host/Cisco/ASA/model, Settings/ParanoidReport
Exploit Ease: No known exploits are available
Patch Publication Date: 5/15/2019
Vulnerability Publication Date: 5/15/2019
Reference Information
CVE: CVE-2019-1833
BID: 108338