CVE-2024-20330
"Cisco Firepower 2100 Series Appliances Snort Detection Engine Memory Corruption Vulnerability"
Description
A vulnerability in the Snort 2 and Snort 3 TCP and UDP detection engine of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Appliances could allow an unauthenticated, remote attacker to cause memory corruption, which could cause the Snort detection engine to restart unexpectedly. This vulnerability is due to improper memory management when the Snort detection engine processes specific TCP or UDP packets. An attacker could exploit this vulnerability by sending crafted TCP or UDP packets through a device that is inspecting traffic using the Snort detection engine. A successful exploit could allow the attacker to restart the Snort detection engine repeatedly, which could cause a denial of service (DoS) condition. The DoS condition impacts only the traffic through the device that is examined by the Snort detection engine. The device can still be managed over the network. Note: Once a memory block is corrupted, it cannot be cleared until the Cisco Firepower 2100 Series Appliance is manually reloaded. This means that the Snort detection engine could crash repeatedly, causing traffic that is processed by the Snort detection engine to be dropped until the device is manually reloaded.
INFO
Published Date :
Oct. 23, 2024, 5:15 p.m.
Last Modified :
Aug. 6, 2025, 3:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2024-20330
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
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-2024-20330.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-20330 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-2024-20330
weaknesses.
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-2024-20330 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-20330 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.
-
Initial Analysis by [email protected]
Aug. 06, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CPE Configuration AND OR *cpe:2.3:a:cisco:firepower_threat_defense:7.1.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.0.1:*:*:*:*:*:*:* *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:7.1.0.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.0:*:*:*:*:*:*:* *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:7.2.5:*:*:*:*:*:*:* *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:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.4.1.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.4.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.0.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.5:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.6:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.6.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.6.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.0.6.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.1.0.3:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.4:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.4.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.5.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.5.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.6:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.7:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.8:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.2.8.1:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.3.1.2:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:7.4.1:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:firepower_2110:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:firepower_2120:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:firepower_2130:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:firepower_2140:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:firepower_2100:-:*:*:*:*:*:*:* Added Reference Type Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-M446vbEO Types: Broken Link Added Reference Type Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd2100-snort-dos-M9HuMt75 Types: Vendor Advisory Added Reference Type Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75300 Types: Vendor Advisory -
CVE Received by [email protected]
Oct. 23, 2024
Action Type Old Value New Value Added Description A vulnerability in the Snort 2 and Snort 3 TCP and UDP detection engine of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Appliances could allow an unauthenticated, remote attacker to cause memory corruption, which could cause the Snort detection engine to restart unexpectedly. This vulnerability is due to improper memory management when the Snort detection engine processes specific TCP or UDP packets. An attacker could exploit this vulnerability by sending crafted TCP or UDP packets through a device that is inspecting traffic using the Snort detection engine. A successful exploit could allow the attacker to restart the Snort detection engine repeatedly, which could cause a denial of service (DoS) condition. The DoS condition impacts only the traffic through the device that is examined by the Snort detection engine. The device can still be managed over the network. Note: Once a memory block is corrupted, it cannot be cleared until the Cisco Firepower 2100 Series Appliance is manually reloaded. This means that the Snort detection engine could crash repeatedly, causing traffic that is processed by the Snort detection engine to be dropped until the device is manually reloaded. Added Reference Cisco Systems, Inc. https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd2100-snort-dos-M9HuMt75 [No types assigned] Added Reference Cisco Systems, Inc. https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-M446vbEO [No types assigned] Added Reference Cisco Systems, Inc. https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75300 [No types assigned] Added CWE Cisco Systems, Inc. CWE-788 Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H