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CVE-2020-3285— Cisco Firepower Threat Defense Software SSL/TLS URL Category 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 Software 6.4.0版本至6.4.0.8版本（release）中的TLS 1.3版本策略（配置有URL category）存在安全漏洞。远程攻击者可通过发送特制的TLS 1.3连接请求利用该漏洞绕过TLS 1.3版本策略，访问受影响设备之外的URL。

AI Predicted 7.5 Difficulty: Easy EPSS 1.46% · P73

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2020-3285

Vulnerability Information
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Vulnerability Title
Cisco Firepower Threat Defense Software SSL/TLS URL Category Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Transport Layer Security version 1.3 (TLS 1.3) policy with URL category functionality for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass a configured TLS 1.3 policy to block traffic for a specific URL. The vulnerability is due to a logic error with Snort handling of the connection with the TLS 1.3 policy and URL category configuration. An attacker could exploit this vulnerability by sending crafted TLS 1.3 connections to an affected device. A successful exploit could allow the attacker to bypass the TLS 1.3 policy and access URLs that are outside the affected device and normally would be dropped.
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 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 Software 6.4.0版本至6.4.0.8版本（release）中的TLS 1.3版本策略（配置有URL category）存在安全漏洞。远程攻击者可通过发送特制的TLS 1.3连接请求利用该漏洞绕过TLS 1.3版本策略，访问受影响设备之外的URL。
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-2020-3285

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III. Intelligence Information for CVE-2020-3285

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Vendor Advisories for CVE-2020-3285 (1)

Same Patch Batch · Cisco · 2020-05-06 · 35 CVEs total

CVE-2020-3298 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Malformed
CVE-2020-3196 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS D
CVE-2020-3246 Cisco Umbrella Carriage Return Line Feed Injection Vulnerability
CVE-2020-3253 Cisco Firepower Threat Defense Software Shell Access Vulnerability
CVE-2020-3254 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Media Gat
CVE-2020-3255 Cisco Firepower Threat Defense Software Packet Flood Denial of Service Vulnerability
CVE-2020-3256 Cisco Hosted Collaboration Mediation Fulfillment XML External Expansion Vulnerability
CVE-2020-3259 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi
CVE-2020-3283 Cisco Firepower 1000 Series SSL/TLS Denial of Service Vulnerability
CVE-2020-3195 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software OSPF Pack
CVE-2020-3301 Cisco Firepower Management Center Static Credential Vulnerabilities
CVE-2020-3302 Cisco Firepower Management Center File Overwrite Vulnerability
CVE-2020-3303 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IKEv1 Den
CVE-2020-3305 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software BGP Denia
CVE-2020-3306 Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software DHCP Deni
CVE-2020-3307 Cisco Firepower Management Center Arbitrary Log File Write Vulnerability
CVE-2020-3308 Cisco Firepower Threat Defense Software Signature Verification Bypass Vulnerability
CVE-2020-3315 Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability
CVE-2020-3178 Cisco Content Security Management Appliance Open Redirect Vulnerabilities
CVE-2020-3179 Cisco Firepower Threat Defense Software Generic Routing Encapsulation Tunnel IPv6 Denial o

Showing top 20 of 35 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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

V. Comments for CVE-2020-3285

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