Vulnerability Details : 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.
Products affected by CVE-2019-1833
- cpe:2.3:a:cisco:firepower_management_center:6.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_management_center:6.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_management_center:6.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_management_center:6.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_management_center:6.2.3:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-1833
0.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 40 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-1833
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
|
5.8
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
3.9
|
1.4
|
NIST | |
|
5.8
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
3.9
|
1.4
|
Cisco Systems, Inc. |
CWE ids for CVE-2019-1833
-
The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)
References for CVE-2019-1833
-
http://www.securityfocus.com/bid/108338
Cisco Firepower Threat Defense Software CVE-2019-1833 Security Bypass VulnerabilityThird Party Advisory;VDB Entry
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-ftd-ssltls-bypass
Cisco Firepower Threat Defense Software SSL/TLS Policy Bypass VulnerabilityVendor Advisory
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