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CVE-2019-1833— Cisco Firepower Threat Defense Software SSL/TLS Policy Bypass 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 FTD中的SSL/TLS协议解析器存在安全漏洞，该漏洞源于程序没有正确解析TLS数据包头中的属性。远程攻击者可通过发送恶意的TLS消息利用该漏洞绕过被配置的策略。

AI Predicted 8.1 Difficulty: Easy EPSS 1.71% · P76

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2019-1833

Vulnerability Information
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Vulnerability Title
Cisco Firepower Threat Defense Software SSL/TLS Policy Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) protocol parser of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured policies. The vulnerability is due to improper parsing of specific attributes in a TLS packet header. An attacker could exploit this vulnerability by sending malicious TLS messages to the affected system. A successful exploit could allow the attacker to bypass the configured policies for the system, which could allow traffic to flow through without being inspected.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Firepower Threat Defense SSL/TLS协议解析器安全漏洞
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 FTD中的SSL/TLS协议解析器存在安全漏洞，该漏洞源于程序没有正确解析TLS数据包头中的属性。远程攻击者可通过发送恶意的TLS消息利用该漏洞绕过被配置的策略。
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 Cisco Firepower Threat Defense Software unspecified ~ n/a -

II. Public POCs for CVE-2019-1833

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III. Intelligence Information for CVE-2019-1833

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Vendor Advisories for CVE-2019-1833 (2)

Same Patch Batch · Cisco · 2019-05-16 · 18 CVEs total

CVE-2019-1832 Cisco Firepower Threat Defense Software Detection Engine Policy Bypass Vulnerability
CVE-2019-1825 Cisco Prime Infrastructure and Evolved Programmable Network Manager SQL Injection Vulnerab
CVE-2019-1824 Cisco Prime Infrastructure and Evolved Programmable Network Manager SQL Injection Vulnerab
CVE-2019-1823 Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution
CVE-2019-1822 Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution
CVE-2019-1821 Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution
CVE-2019-1820 Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera
CVE-2019-1819 Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera
CVE-2019-1818 Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera
CVE-2019-1780 Cisco FXOS and NX-OS Software Command Injection Vulnerability
CVE-2019-1860 Cisco Unified Intelligence Center Remote File Injection Vulnerability
CVE-2019-1858 Cisco FXOS and NX-OS Software Simple Network Management Protocol Denial of Service Vulnera
CVE-2019-1853 Cisco AnyConnect Secure Mobility Client for Linux Out-of-Bounds Memory Read Vulnerability
CVE-2019-1851 Cisco Identity Services Engine Arbitrary Client Certificate Creation Vulnerability
CVE-2019-1849 Cisco IOS XR Software BGP MPLS-Based EVPN Denial of Service Vulnerability
CVE-2019-1846 Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers MPLS OAM Deni
CVE-2019-1768 Cisco NX-OS Software Buffer Overflow and Command Injection Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Firepower Threat Defense Software
Same vendor: Cisco
Same weakness: CWE-693

V. Comments for CVE-2019-1833

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