CVE-2021-40116— Cisco Products Snort 安全漏洞
一分钟漏洞结论
影响对象
Cisco Cisco Firepower Threat Defense Software
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Cisco Products Snort是美国思科（Cisco）公司的一个用于思科产品的Snort引擎。 Cisco Products Snort Rule 存在安全漏洞，该漏洞源于在没有适当约束的情况下配置规则时，对Block with Reset或Interactive Block with Reset操作的不当处理造成的。攻击者可以通过向受影响的设备发送精心设计的 IP 数据包来利用此漏洞。成功的利用可能允许攻击者导致直通流量被丢弃。
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一、 漏洞 CVE-2021-40116 基础信息
漏洞信息
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Vulnerability Title
Multiple Cisco Products Snort Rule Denial of Service Vulnerability
来源: CVE Program / CVE List V5
Vulnerability Description
Multiple Cisco products are affected by a vulnerability in Snort rules that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.The vulnerability is due to improper handling of the Block with Reset or Interactive Block with Reset actions if a rule is configured without proper constraints. An attacker could exploit this vulnerability by sending a crafted IP packet to the affected device. A successful exploit could allow the attacker to cause through traffic to be dropped. Note: Only products with Snort3 configured and either a rule with Block with Reset or Interactive Block with Reset actions configured are vulnerable. Products configured with Snort2 are not vulnerable.
来源: 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
来源: CVE Program / CVE List V5
Vulnerability Type
非预期数据类型处理不恰当
来源: CVE Program / CVE List V5
Vulnerability Title
Cisco Products Snort 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Cisco Products Snort是美国思科（Cisco）公司的一个用于思科产品的Snort引擎。 Cisco Products Snort Rule 存在安全漏洞，该漏洞源于在没有适当约束的情况下配置规则时，对Block with Reset或Interactive Block with Reset操作的不当处理造成的。攻击者可以通过向受影响的设备发送精心设计的 IP 数据包来利用此漏洞。成功的利用可能允许攻击者导致直通流量被丢弃。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Cisco | Cisco Firepower Threat Defense Software | n/a | - |
|
二、漏洞 CVE-2021-40116 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
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CVE-2021-40116 厂商安全公告 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-dos-RywH7ezM vendor-advisory x_refsource_CISCO
同批安全公告 · Cisco · 2021-10-27 · 共 20 条
| CVE-2021-40117 | 8.6 HIGH | Cisco Firepower Threat Defense 资源管理错误漏洞 |
| CVE-2021-34781 | 8.6 HIGH | Cisco Firepower Threat Defense 缓冲区错误漏洞 |
| CVE-2021-34783 | 8.6 HIGH | Cisco Firepower Threat Defense和Cisco Adaptive Security Appliances Software 输入验证错误漏洞 |
| CVE-2021-34792 | 8.6 HIGH | Cisco Firepower Threat Defense（FTD）和Cisco Adaptive Security Appliances Software（ASA Softwa |
| CVE-2021-34793 | 8.6 HIGH | Cisco Firepower Threat Defense（FTD）和Cisco Adaptive Security Appliances Software（ASA Softwa |
| CVE-2021-40118 | 8.6 HIGH | Cisco Adaptive Security Appliances Software和Cisco Firepower Threat Defense 缓冲区错误漏洞 |
| CVE-2021-34762 | 8.1 HIGH | Cisco Firepower Management Center 路径遍历漏洞 |
| CVE-2021-40114 | 6.8 MEDIUM | Cisco Products Snort 安全漏洞 |
| CVE-2021-34756 | 6.7 MEDIUM | Cisco Firepower Threat Defense 操作系统命令注入漏洞 |
| CVE-2021-34755 | 6.7 MEDIUM | Cisco Firepower Threat Defense 操作系统命令注入漏洞 |
| CVE-2021-34754 | 5.8 MEDIUM | Cisco Firepower Threat Defense 访问控制错误漏洞 |
| CVE-2021-34794 | 5.3 MEDIUM | Cisco Firepower Threat Defense 安全漏洞 |
| CVE-2021-34787 | 5.3 MEDIUM | Cisco Firepower Threat Defense（FTD）和Cisco Adaptive Security Appliances Software（ASA Softwa |
| CVE-2021-40125 | 5.3 MEDIUM | Cisco Firepower Threat Defense（FTD）和Cisco Adaptive Security Appliances Software（ASA Softwa |
| CVE-2021-34764 | 4.8 MEDIUM | Cisco Firepower Management Center 输入验证错误漏洞 |
| CVE-2021-34763 | 4.8 MEDIUM | Cisco Firepower Management Center 跨站脚本漏洞 |
| CVE-2021-34791 | 4.7 MEDIUM | Cisco Firepower Threat Defense（FTD）和Cisco Adaptive Security Appliances Software（ASA Softwa |
| CVE-2021-34790 | 4.7 MEDIUM | Cisco Firepower Threat Defense和Cisco Adaptive Security Appliances Software 输入验证错误漏洞 |
| CVE-2021-34761 | 4.4 MEDIUM | Cisco Firepower Threat Defense 输入验证错误漏洞 |
IV. Related Vulnerabilities
Same product: Cisco Firepower Threat Defense Software
V. Comments for CVE-2021-40116
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