CVE-2021-1494
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.
Snort是 Snort开源的一个应用系统。提供一系列规则来帮助定义恶意网络活动，并使用这些规则查找与其匹配的数据包并为用户生成警报。 Snort 存在安全漏洞，攻击者可利用该漏洞绕过过滤规则，以传输恶意数据。
Possible ATT&CK Techniques 2 AI
T1071 · Application Layer Protocol T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-1494
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP.
The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.
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
保护机制失效
Source: CVE Program / CVE List V5
Vulnerability Title
Snort 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Snort是 Snort开源的一个应用系统。提供一系列规则来帮助定义恶意网络活动，并使用这些规则查找与其匹配的数据包并为用户生成警报。 Snort 存在安全漏洞，攻击者可利用该漏洞绕过过滤规则，以传输恶意数据。
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 | N/A | - |
|
| Cisco | Cisco UTD SNORT IPS Engine Software | 16.12.1a | - |
|
II. Public POCs for CVE-2021-1494
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-1494 (1)
Same Patch Batch · Cisco · 2024-11-15 · 50 CVEs total
| CVE-2023-20036 | 9.9 CRITICAL | Cisco Industrial Network Director Command Injection Vulnerability |
| CVE-2023-20154 | 9.1 CRITICAL | Cisco Modeling Labs External Authentication Bypass Vulnerability |
| CVE-2022-20655 | 8.8 HIGH | Cisco 多款产品操作系统命令注入漏洞 |
| CVE-2023-20125 | 8.6 HIGH | Cisco BroadWorks Network Server TCP Denial of Service Vulnerability |
| CVE-2022-20649 | 8.1 HIGH | Cisco Redundancy Configuration Manager Debug Remote Code Execution Vulnerability |
| CVE-2022-20685 | 7.5 HIGH | Multiple Cisco Products Snort Modbus Denial of Service Vulnerability |
| CVE-2022-20853 | 7.4 HIGH | Cisco Expressway Series and Cisco TelePresence VCS Cross-Site Request Forgery Vulnerabilit |
| CVE-2022-20814 | 7.4 HIGH | Cisco Expressway Series and Cisco TelePresence VCS Improper Certificate Validation Vulnera |
| CVE-2022-20793 | 6.8 MEDIUM | Cisco Touch 10 Device Insufficient Identity Verification Vulnerability |
| CVE-2021-34752 | 6.7 MEDIUM | Cisco Firepower Threat Defense Command Injection Vulnerabilities |
| CVE-2023-20090 | 6.7 MEDIUM | Cisco TelePresence Collaboration Endpoint and RoomOS Software Privilege Escalation Vulnera |
| CVE-2022-20931 | 6.5 MEDIUM | Cisco Touch 10 Device Downgrade Attack Vulnerability |
| CVE-2022-20656 | 6.5 MEDIUM | Cisco Prime Infrastructure and Cisco Evolved Programmable Network Manager Path Traversal V |
| CVE-2021-1484 | 6.5 MEDIUM | Cisco SD-WAN vManage Command Injection Vulnerability |
| CVE-2022-20652 | 6.5 MEDIUM | Cisco Tetration Command Injection Vulnerability |
| CVE-2021-1482 | 6.4 MEDIUM | Cisco SD-WAN vManage Authorization Bypass Vulnerability |
| CVE-2021-1483 | 6.4 MEDIUM | Cisco SD-WAN vManage Software XML External Entity Vulnerability |
| CVE-2022-20871 | 6.3 MEDIUM | Cisco Secure Web Appliance Privilege Escalation Vulnerability |
| CVE-2022-20849 | 6.1 MEDIUM | Cisco IOS XR Software Broadband Network Gateway PPPoE Denial of Service Vulnerability |
| CVE-2022-20657 | 6.1 MEDIUM | Cisco Prime Infrastructure and Cisco Evolved Programmable Network Manager Cross-Site Scrip |
Showing top 20 of 50 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-1494
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