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CVE-2024-20508— Cisco UTD Snort IPS Engine Software for Cisco IOS XE Software Security Policy Bypass and Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco UTD SNORT IPS Engine 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 IOS XE Software是美国思科（Cisco）公司的一个操作系统。用于企业有线和无线访问，汇聚，核心和WAN的单一操作系统，Cisco IOS XE降低了业务和网络的复杂性。 Cisco IOS XE Software存在安全漏洞，该漏洞源于 Cisco UTD Snort IPS 引擎处理 HTTP 请求时对 HTTP 请求的验证不足。

CVSS 5.8 · Medium EPSS 0.42% · P34
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I. Basic Information for CVE-2024-20508

Vulnerability Information
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Vulnerability Title
Cisco UTD Snort IPS Engine Software for Cisco IOS XE Software Security Policy Bypass and Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in Cisco Unified Threat Defense (UTD) Snort Intrusion Prevention System (IPS) Engine for Cisco IOS XE Software could allow an unauthenticated, remote attacker to bypass configured security policies or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of HTTP requests when they are processed by Cisco UTD Snort IPS Engine. An attacker could exploit this vulnerability by sending a crafted HTTP request through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process. If the action in case of Cisco UTD Snort IPS Engine failure is set to the default, fail-open, successful exploitation of this vulnerability could allow the attacker to bypass configured security policies. If the action in case of Cisco UTD Snort IPS Engine failure is set to fail-close, successful exploitation of this vulnerability could cause traffic that is configured to be inspected by Cisco UTD Snort IPS Engine to be dropped.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XE Software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE Software是美国思科（Cisco）公司的一个操作系统。用于企业有线和无线访问，汇聚，核心和WAN的单一操作系统，Cisco IOS XE降低了业务和网络的复杂性。 Cisco IOS XE Software存在安全漏洞，该漏洞源于 Cisco UTD Snort IPS 引擎处理 HTTP 请求时对 HTTP 请求的验证不足。
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 UTD SNORT IPS Engine Software 17.12.1a -

II. Public POCs for CVE-2024-20508

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III. Intelligence Information for CVE-2024-20508

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Vendor Advisories for CVE-2024-20508 (1)

Same Patch Batch · Cisco · 2024-09-25 · 15 CVEs total

CVE-2024-20467 8.6 HIGH Cisco IOS XE Software 安全漏洞
CVE-2024-20464 8.6 HIGH Cisco IOS XE Software 安全漏洞
CVE-2024-20480 8.6 HIGH Cisco IOS XE Software 安全漏洞
CVE-2024-20436 8.6 HIGH Cisco IOS XE Software 安全漏洞
CVE-2024-20433 8.6 HIGH Cisco IOS XE Software 安全漏洞
CVE-2024-20455 8.6 HIGH Cisco IOS XE Software 安全漏洞
CVE-2024-20437 8.1 HIGH Cisco IOS XE Software 安全漏洞
CVE-2024-20350 7.5 HIGH Cisco Catalyst Center Static SSH Host Key Vulnerability
CVE-2024-20414 6.5 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2024-20475 6.4 MEDIUM Cisco SD-WAN vManage Cross-Site Scripting Vulnerability
CVE-2024-20496 6.1 MEDIUM Cisco SD-WAN vEdge Routers Denial of Service Vulnerability
CVE-2024-20465 5.8 MEDIUM Cisco IOS 安全漏洞
CVE-2024-20510 4.7 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2024-20434 4.3 MEDIUM Cisco IOS XE Software 安全漏洞

IV. Related Vulnerabilities

Same product: Cisco UTD SNORT IPS Engine Software
Same vendor: Cisco
Same weakness: CWE-122

V. Comments for CVE-2024-20508

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