CVE-2021-1402— Cisco Firepower Threat Defense Software SSL Decryption Policy 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 存在输入验证错误漏洞，该漏洞允许未经身份验证的远程攻击者可利用该漏洞触发重新加载受影响的设备，从而导致拒绝服务(DoS)状态。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-1402
Vulnerability Information
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Vulnerability Title
Cisco Firepower Threat Defense Software SSL Decryption Policy Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the software-based SSL/TLS message handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of SSL/TLS messages when the device performs software-based SSL decryption. An attacker could exploit this vulnerability by sending a crafted SSL/TLS message through an affected device. SSL/TLS messages sent to an affected device do not trigger this vulnerability. A successful exploit could allow the attacker to cause a process to crash. This crash would then trigger a reload of the device. No manual intervention is needed to recover the device after the reload.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Firepower Threat Defense 输入验证错误漏洞
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 存在输入验证错误漏洞，该漏洞允许未经身份验证的远程攻击者可利用该漏洞触发重新加载受影响的设备，从而导致拒绝服务(DoS)状态。
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 | - |
|
II. Public POCs for CVE-2021-1402
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-1402 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-ssl-decrypt-dos-DdyLuK6c vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2021-04-29 · 17 CVEs total
| CVE-2021-1445 | 8.6 HIGH | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi |
| CVE-2021-1501 | 8.6 HIGH | Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software SIP |
| CVE-2021-1504 | 8.6 HIGH | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi |
| CVE-2021-1493 | 8.5 HIGH | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi |
| CVE-2021-1476 | 6.7 MEDIUM | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Command I |
| CVE-2021-1488 | 6.7 MEDIUM | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software for Firep |
| CVE-2021-1256 | 6.0 MEDIUM | Cisco Firepower Threat Defense Software Command File Overwrite Vulnerability |
| CVE-2021-1495 | 5.8 MEDIUM | Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability |
| CVE-2021-1369 | 5.4 MEDIUM | Cisco Firepower Device Manager On-Box Software XML External Entity Vulnerability |
| CVE-2021-1456 | 4.8 MEDIUM | Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities |
| CVE-2021-1457 | 4.8 MEDIUM | Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities |
| CVE-2021-1458 | 4.8 MEDIUM | Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities |
| CVE-2021-1477 | 4.3 MEDIUM | Cisco Firepower Management Center Software Policy Vulnerability |
| CVE-2021-1448 | Cisco Firepower Threat Defense Software Command Injection Vulnerability | |
| CVE-2021-1455 | Cisco Firepower Management Center Software Cross-Site Scripting Vulnerabilities | |
| CVE-2021-1489 | Cisco Firepower Device Manager Software Filesystem Space Exhaustion Denial of Service Vuln |
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V. Comments for CVE-2021-1402
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