CVE-2023-20177
Cisco Firepower Threat Defense (FTD) SSL/TLS Connection RCE
Description
A vulnerability in the SSL file policy implementation of Cisco Firepower Threat Defense (FTD) Software that occurs when the SSL/TLS connection is configured with a URL Category and the Snort 3 detection engine could allow an unauthenticated, remote attacker to cause the Snort 3 detection engine to unexpectedly restart. This vulnerability exists because a logic error occurs when a Snort 3 detection engine inspects an SSL/TLS connection that has either a URL Category configured on the SSL file policy or a URL Category configured on an access control policy with TLS server identity discovery enabled. Under specific, time-based constraints, an attacker could exploit this vulnerability by sending a crafted SSL/TLS connection through an affected device. A successful exploit could allow the attacker to trigger an unexpected reload of the Snort 3 detection engine, resulting in either a bypass or denial of service (DoS) condition, depending on device configuration. The Snort 3 detection engine will restart automatically. No manual intervention is required.
INFO
Published Date :
Nov. 1, 2023, 5:15 p.m.
Last Modified :
Jan. 25, 2024, 5:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
2.2
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-20177.
| URL | Resource |
|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sa-ftd-snort3-urldos-OccFQTeX | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-20177 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-20177 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Jan. 25, 2024
Action Type Old Value New Value Added CWE Cisco Systems, Inc. CWE-244 -
Initial Analysis by [email protected]
Nov. 14, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L Changed Reference Type https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sa-ftd-snort3-urldos-OccFQTeX No Types Assigned https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sa-ftd-snort3-urldos-OccFQTeX Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:cisco:firepower_threat_defense:7.0.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.1.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.2.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.4:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.5:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.1.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.3.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.3.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.3.1.1:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-20177 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-20177
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.02%
score
0.25361
percentile