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CVE-2024-20330— Cisco Firepower Threat Defense Software for Cisco Firepower 2100 Series TCP UDP Snort 2 and Snort 2 Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco Firepower Threat Defense Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。 Cisco Firepower Threat Defense存在安全漏洞，该漏洞源于Snort检测引擎在处理特定 TCP 或 UDP 数据包时内存管理不当。远程攻击者利用该漏洞造成内存损坏，从而导致 Snort 检测引擎意外重启。

CVSS 8.6 · High EPSS 0.66% · P50
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I. Basic Information for CVE-2024-20330

Vulnerability Information
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Vulnerability Title
Cisco Firepower Threat Defense Software for Cisco Firepower 2100 Series TCP UDP Snort 2 and Snort 2 Denial of Service Vulnerability
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在缓冲区结束位置之后访问内存
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Firepower Threat Defense 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。 Cisco Firepower Threat Defense存在安全漏洞，该漏洞源于Snort检测引擎在处理特定 TCP 或 UDP 数据包时内存管理不当。远程攻击者利用该漏洞造成内存损坏，从而导致 Snort 检测引擎意外重启。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco Firepower Threat Defense Software 7.0.0 -

II. Public POCs for CVE-2024-20330

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III. Intelligence Information for CVE-2024-20330

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Vendor Advisories for CVE-2024-20330 (1)

Same Patch Batch · Cisco · 2024-10-23 · 52 CVEs total

CVE-2024-20329 9.9 CRITICAL Cisco Adaptive Security Appliance Software Remote Command Injection Vulnerability
CVE-2024-20424 9.9 CRITICAL Cisco Secure Firewall Management Center 安全漏洞
CVE-2024-20412 9.3 CRITICAL Cisco Firepower Threat Defense 安全漏洞
CVE-2024-20351 8.6 HIGH Cisco Firepower Threat Defense Software Snort Firewall Denial of Service Vulnerability
CVE-2024-20260 8.6 HIGH Cisco Adaptive Security Virtual Appliance and Secure Firewall Threat Defense Virtual SSL V
CVE-2024-20494 8.6 HIGH Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞
CVE-2024-20426 8.6 HIGH Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞
CVE-2024-20339 8.6 HIGH Cisco Firepower Threat Defense Software for Firepower 2100 Series TLS Denial of Service Vu
CVE-2024-20402 8.6 HIGH Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞
CVE-2024-20495 8.6 HIGH Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞
CVE-2024-20268 7.7 HIGH Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SNMP Deni
CVE-2024-20408 7.7 HIGH Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞
CVE-2024-20275 6.8 MEDIUM Cisco Secure Firewall Management Center Software Backup Cluster Command Injection Vulnerab
CVE-2024-20331 6.8 MEDIUM Cisco Adaptive Security Appliance and Firepower Threat Defense Software VPN Authentication
CVE-2024-20482 6.5 MEDIUM Cisco Secure Firewall Management Center 安全漏洞
CVE-2024-20340 6.5 MEDIUM Cisco Secure Firewall Management Center 安全漏洞
CVE-2024-20471 6.5 MEDIUM Cisco Secure Firewall Management Center 安全漏洞
CVE-2024-20473 6.5 MEDIUM Cisco Secure Firewall Management Center 安全漏洞
CVE-2024-20374 6.5 MEDIUM Cisco Secure Firewall Management Center 安全漏洞
CVE-2024-20472 6.5 MEDIUM Cisco Secure Firewall Management Center 安全漏洞

Showing top 20 of 52 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco Firepower Threat Defense Software
Same vendor: Cisco
Same weakness: CWE-788

V. Comments for CVE-2024-20330

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