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CVE-2021-34719— Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerabilities

CVSS 7.8 · High EPSS 0.08% · P23
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I. Basic Information for CVE-2021-34719

Vulnerability Information
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Vulnerability Title
Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerabilities
Source: NVD (National Vulnerability Database)
Vulnerability Description
Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker with a low-privileged account to elevate privileges on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IOS XR 操作系统命令注入漏洞
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存在操作系统命令注入漏洞，该漏洞源于软件中的CLI对于命令行参数的缺乏有效的验证。该漏洞可能允许经过身份验证的本地攻击者在受影响的设备上将权限提升为 root。攻击者可以通过对受影响的设备进行身份验证并将精心设计的输入提交到设备上的特定命令来利用此漏洞。 成功的利用可能允许攻击者以 root 身份执行任意命令。
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

VendorProductAffected VersionsCPESubscribe
CiscoCisco IOS XR Software n/a -

II. Public POCs for CVE-2021-34719

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III. Intelligence Information for CVE-2021-34719

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Same Patch Batch · Cisco · 2021-09-09 · 13 CVEs total

CVE-2021-347208.6 HIGHCisco IOS XR Software IP Service Level Agreements and Two-Way Active Measurement Protocol
CVE-2021-347188.1 HIGHCisco IOS XR Software Arbitrary File Read and Write Vulnerability
CVE-2021-347287.8 HIGHCisco IOS XR Software Authenticated User Privilege Escalation Vulnerabilities
CVE-2021-347137.4 HIGHCisco IOS XR Software for ASR 9000 Series Routers Denial of Service Vulnerability
CVE-2021-347226.7 MEDIUMCisco IOS XR Software Command Injection Vulnerabilities
CVE-2021-347216.7 MEDIUMCisco IOS XR Software Command Injection Vulnerabilities
CVE-2021-347866.5 MEDIUMCisco BroadWorks CommPilot Application Software Vulnerabilities
CVE-2021-347856.5 MEDIUMCisco BroadWorks CommPilot Application Software Vulnerabilities
CVE-2021-347096.0 MEDIUMCisco IOS XR Software for Cisco 8000 and Network Convergence System 540 Series Routers Ima
CVE-2021-347086.0 MEDIUMCisco IOS XR Software for Cisco 8000 and Network Convergence System 540 Series Routers Ima
CVE-2021-347375.8 MEDIUMCisco IOS XR Software DHCP Version 4 Server Denial of Service Vulnerability
CVE-2021-347715.5 MEDIUMCisco IOS XR Software Unauthorized Information Disclosure Vulnerability

IV. Related Vulnerabilities

Same product: Cisco IOS XR Software
Same vendor: Cisco
Same weakness: CWE-78

V. Comments for CVE-2021-34719

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