CVE-2020-3118— Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability
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I. Basic Information for CVE-2020-3118
Vulnerability Information
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Vulnerability Title
Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device. The vulnerability is due to improper validation of string input from certain fields in Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device. 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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用外部控制的格式字符串
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IOS XR 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XR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 XR中的Cisco Discovery Protocol实现存在缓冲区错误漏洞，该漏洞源于程序没有正确验证输入的字符串。攻击者可通过发送恶意的Cisco Discovery Protocol数据包利用该漏洞以管理权限执行任意代码。
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)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco IOS XR Software | unspecified ~ 6.6.3 | - |
II. Public POCs for CVE-2020-3118
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-iosxr-cdp-rcevendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2020-3118
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-2020-3111 | Cisco IP Phone Remote Code Execution and Denial of Service 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 |
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V. Comments for CVE-2020-3118
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