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CVE-2020-3209— Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability

Quick assessment

Affected
Cisco Cisco IOS XE Software 3.2.0SG
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 IOS XE是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XE中的软件映像验证存在数据伪造问题漏洞，该漏洞源于程序在初始引导过程中未正确检查用于管理系统映像文件的数字签名验证的代码区域。攻击者可通过在受影响的设备上加载未签名的软件利用该漏洞在目标设备上安装和启动恶意软件映像或执行未签名的二进制文件。

AI Predicted 7.2 Difficulty: Easy EPSS 0.28% · P19
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I. Basic Information for CVE-2020-3209

Vulnerability Information
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Vulnerability Title
Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in software image verification in Cisco IOS XE Software could allow an unauthenticated, physical attacker to install and boot a malicious software image or execute unsigned binaries on an affected device. The vulnerability is due to an improper check on the area of code that manages the verification of the digital signatures of system image files during the initial boot process. An attacker could exploit this vulnerability by loading unsigned software on an affected device. A successful exploit could allow the attacker to install and boot a malicious software image or execute unsigned binaries on the targeted device.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XE 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XE中的软件映像验证存在数据伪造问题漏洞，该漏洞源于程序在初始引导过程中未正确检查用于管理系统映像文件的数字签名验证的代码区域。攻击者可通过在受影响的设备上加载未签名的软件利用该漏洞在目标设备上安装和启动恶意软件映像或执行未签名的二进制文件。
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 IOS XE Software 3.2.0SG n/a -

II. Public POCs for CVE-2020-3209

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III. Intelligence Information for CVE-2020-3209

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Vendor Advisories for CVE-2020-3209 (1)

Same Patch Batch · Cisco · 2020-06-03 · 50 CVEs total

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CVE-2020-3333 Cisco Application Services Engine Software Unauthenticated Event Policies Update Vulnerabi
CVE-2020-3257 Cisco IOx Application Environment for IOS Software for Cisco Industrial Routers Vulnerabil
CVE-2020-3267 Cisco Unified Contact Center Express Improper API Authorization Vulnerability
CVE-2020-3258 Cisco IOS Software for Cisco Industrial Routers Arbitrary Code Execution Vulnerabilities
CVE-2020-3281 Cisco Digital Network Architecture Center Information Disclosure Vulnerability
CVE-2020-3232 Cisco ASR 920 Series Aggregation Services Router Model 12SZ-IM SNMP Denial of Service Vuln
CVE-2020-3200 Cisco IOS and IOS XE Software Secure Shell Denial of Service Vulnerability
CVE-2020-3199 Cisco IOx Application Environment for IOS Software for Cisco Industrial Routers Vulnerabil
CVE-2020-3198 Cisco IOS Software for Cisco Industrial Routers Arbitrary Code Execution Vulnerabilities
CVE-2020-3228 Cisco IOS, IOS XE, and NX-OS Software Security Group Tag Exchange Protocol Denial of Servi
CVE-2020-3231 Cisco IOS Software for Catalyst 2960-L Series Switches and Catalyst CDB-8P Switches 802.1X
CVE-2020-3230 Cisco IOS and IOS XE Software Internet Key Exchange Version 2 Denial of Service Vulnerabil
CVE-2020-3229 Cisco IOS XE Software Web UI Privilege Escalation Vulnerability
CVE-2020-3227 Cisco IOx for IOS XE Software Privilege Escalation Vulnerability
CVE-2020-3225 Cisco IOS and IOS XE Software Common Industrial Protocol Denial of Service Vulnerabilities
CVE-2020-3233 Cisco IOx Application Framework Local Manager Stored Cross-Site Scripting Vulnerability

Showing top 20 of 50 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: Cisco
Same weakness: CWE-347

V. Comments for CVE-2020-3209

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