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CVE-2017-6766

Quick assessment

Affected
n/a Cisco Firepower System 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 System Software是美国思科（Cisco）公司的一款下一代防火墙产品（NGFW）。 Cisco Firepower System Software中的Secure Sockets Layer (SSL) Decryption and Inspection功能存在安全漏洞。远程攻击者可通过发送特制SSL数据包利用该漏洞绕过SSL加密和检测策略。

AI Predicted 7.5 Difficulty: Moderate EPSS 1.27% · P70
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I. Basic Information for CVE-2017-6766

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Secure Sockets Layer (SSL) Decryption and Inspection feature of Cisco Firepower System Software 5.4.0, 5.4.1, 6.0.0, 6.1.0, 6.2.0, 6.2.1, and 6.2.2 could allow an unauthenticated, remote attacker to bypass the SSL policy for decrypting and inspecting traffic on an affected system. The vulnerability is due to unexpected interaction with Known Key and Decrypt and Resign configuration settings of SSL policies when the affected software receives unexpected SSL packet headers. An attacker could exploit this vulnerability by sending a crafted SSL packet through an affected device in a valid SSL session. A successful exploit could allow the attacker to bypass the SSL decryption and inspection policy for the affected system, which could allow traffic to flow through the system without being inspected. Cisco Bug IDs: CSCve12652.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
加密问题
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Firepower System Software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Firepower System Software是美国思科（Cisco）公司的一款下一代防火墙产品（NGFW）。 Cisco Firepower System Software中的Secure Sockets Layer (SSL) Decryption and Inspection功能存在安全漏洞。远程攻击者可通过发送特制SSL数据包利用该漏洞绕过SSL加密和检测策略。
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 Firepower System Software Cisco Firepower System Software -

II. Public POCs for CVE-2017-6766

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III. Intelligence Information for CVE-2017-6766

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Vendor Advisories for CVE-2017-6766 (1)

Other References for CVE-2017-6766 (1)

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IV. Related Vulnerabilities

Same product: Cisco Firepower System Software
Same vendor: n/a
Same weakness: CWE-310