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CVE-2020-3111— Cisco IP Phone Remote Code Execution and Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco IP phone
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 IP Phone中的Cisco Discovery Protocol实现存在输入验证错误漏洞，该漏洞程序在处理Cisco Discovery Protocol消息时，缺少检查。攻击者可通过发送恶意的Cisco Discovery Protocol数据包利用该漏洞以root权限执行代码或造成拒绝服务。

AI Predicted 6.5 Difficulty: Easy EPSS 3.09% · P87
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I. Basic Information for CVE-2020-3111

Vulnerability Information
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Vulnerability Title
Cisco IP Phone Remote Code Execution and Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Cisco Discovery Protocol implementation for the Cisco IP Phone could allow an unauthenticated, adjacent attacker to remotely execute code with root privileges or cause a reload of an affected IP phone. The vulnerability is due to missing checks when processing Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to the targeted IP phone. A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IP Phone Cisco Discovery Protocol 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IP Phone中的Cisco Discovery Protocol实现存在输入验证错误漏洞，该漏洞程序在处理Cisco Discovery Protocol消息时，缺少检查。攻击者可通过发送恶意的Cisco Discovery Protocol数据包利用该漏洞以root权限执行代码或造成拒绝服务。
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 IP phone unspecified ~ 12.7(1) -

II. Public POCs for CVE-2020-3111

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III. Intelligence Information for CVE-2020-3111

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Vendor Advisories for CVE-2020-3111 (1)

Exploits & Public PoCs for CVE-2020-3111 (1)

Same Patch Batch · Cisco · 2020-02-05 · 8 CVEs total

CVE-2020-3123 7.5 HIGH Clam AntiVirus 缓冲区错误漏洞
CVE-2019-15253 Cisco Digital Network Architecture Center Stored Cross-Site Scripting Vulnerability
CVE-2020-3110 Cisco Video Surveillance 8000 Series IP Cameras Cisco Discovery Protocol Remote Code Execu
CVE-2020-3118 Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability
CVE-2020-3119 Cisco NX-OS Software Cisco Discovery Protocol Remote Code Execution Vulnerability
CVE-2020-3149 Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerability
CVE-2020-3120 Cisco FXOS, IOS XR, and NX-OS Software Cisco Discovery Protocol Denial of Service Vulnerab

IV. Related Vulnerabilities

Same product: Cisco IP phone
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2020-3111

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